An analytic hierarchy process(AHP)was employed to assess the applicability of 18 new and superior varieties of flowers in Hefei City flower border applications.A total of 12 indicators were selected from three distinc...An analytic hierarchy process(AHP)was employed to assess the applicability of 18 new and superior varieties of flowers in Hefei City flower border applications.A total of 12 indicators were selected from three distinct aspects of adaptability,ornamental characteristics and use traits,in order to establish a comprehensive evaluation model.The results demonstrate that grade I(J≥2.685)exhibits excellent application value,encompassing six species of plants,such asHydrangeamacrophylla‘Endless Summer’;grade II(2.684≤J≤2.420)is also of notable application value,encompassing five species of plants,such asCallistemonrigidus;grade III(2.419≤J≤2.615)is of average application value,including five species of plants,such asCrocosmiacrocosmiflora;grade IV(J≤2.16)is of relatively poor application value.The evaluation results may be utilized as a theoretical reference for the promotion of new and superior varieties in the flower border of Hefei.展开更多
In order to further understand and better develop and utilize wild flower resources in Hefei City,a comprehensive evaluation model of landscape value of wild flowers in the application of flower border was constructed...In order to further understand and better develop and utilize wild flower resources in Hefei City,a comprehensive evaluation model of landscape value of wild flowers in the application of flower border was constructed by field investigation and analytic hierarchy process(AHP).The application value of wild flowers in Hefei was evaluated by selecting evaluation indicators from three aspects of ornamental value,adaptability and resource potential.展开更多
Ornamental value of 45 ornamental grass resources was evaluated by grey-correlation analysis based on the full investigation and research of ornamental grass resources in Kunming and with the characters of ornamental ...Ornamental value of 45 ornamental grass resources was evaluated by grey-correlation analysis based on the full investigation and research of ornamental grass resources in Kunming and with the characters of ornamental value, height, color of leaf and inflorescence as evaluating indexes. The results showed that the correlation degree with ideal species of 34 in the 50 ornamental grasses was higher than 0.6; Saccharum fallax, Erianthus longisetosus, Erianthus rufipilus, Zizania latifolia, etc. had better ornamental effects and their correlation degree with ideal species were 0.863 6, 0.812 5, 0.900 0 and 0.815 5, they can be used for landscaping directly.展开更多
The objective evaluation to the terrace cultural landscape heritage value can provide targeted scientific basis for continuation of terrace culture landscape and establishment of protection measures. On the basis of f...The objective evaluation to the terrace cultural landscape heritage value can provide targeted scientific basis for continuation of terrace culture landscape and establishment of protection measures. On the basis of field investigation, expert consultation and literature review, combined with the AVC (Attraction、Vitality and Ca-pacity)theory and Analytic Hierarchy Process based on Fuzzy Comprehensive Evalu-ation, the terrace cultural landscape heritage protection evaluation system and eval-uation model, which selects 22 indicators from three levels including terrace culture landscape resources attraction, resources vitality and resources bearing capacity were structured. Based on col ection of data, material from field survey of China's most representative Yunnan Yuanyang Hani terrace, Hunan Ziquejie terrace and Longsheng Longji terrace and relevant mathematical calculation to determine evalua-tion index weights, organical y combined of qualitative with quantitative analysis, the diversity, reasonableness and accuracy of evaluation system is improved. Compre-hensive result of mathematical statistics showed that the rank of the cultural land-scape heritage value with the three most representative terraces in southern China is: γ(Hani)〉γ(Longji)〉γ(Ziquejie).展开更多
The paper had pointed out that landscape resources were the roots that forest park attracted tourists, and objective and correct evaluation on landscape resources was the foundation to identify development tendency of...The paper had pointed out that landscape resources were the roots that forest park attracted tourists, and objective and correct evaluation on landscape resources was the foundation to identify development tendency of forest park. Based on the field study, it had firstly conducted qualitative evaluation on landscape resources in Junwu Forest Park of Liuzhou City, concluded that forest landscape had distinctive feature and high quality, sceneries in forest were splendid and colorful, landscape combination was good and forest ecological environment was excellent in quality. Furthermore, in accordance with China Forest Park Landscape Resources Quality Grade Evaluation (GB/T18005-1999), quantitative evaluation had been conducted on landscape resources of Junwu Forest Park in Liuzhou City. On this basis, it had deeply analyzed development value of Junwu Forest Park, highlighting its forest aesthetics, popular science education, health care, tourism culture and tourism economic value, so as to provide reference for its planning and development.展开更多
This paper investigates the related factors of Chinese learning engagement and performance of 377 students from three universities in Guangzhou of China,employs the value engineering method,and calculates the value co...This paper investigates the related factors of Chinese learning engagement and performance of 377 students from three universities in Guangzhou of China,employs the value engineering method,and calculates the value coefficient of learning efficiency.From the value coefficient of Chinese language learning,it proves that over 60%of international students studying in China have a higher efficiency in learning Chinese.展开更多
This paper introduces the Value Engineering method to calculate the value coefficient of Chinese learning efficiency for 377 international students by dimension.Results suggest that attention should be paid to male,Eu...This paper introduces the Value Engineering method to calculate the value coefficient of Chinese learning efficiency for 377 international students by dimension.Results suggest that attention should be paid to male,European and American,rural,introverted,and“work or education needs”international students;Give full play to the driving role of the reference-type,explore the space for improving the learning efficiency of the improvement-type and attention-type,and pay attention to the problems of problem-type international students.展开更多
Cryosphere science research and development(R&D) has been strongly committed to public service, integrating natural sciences with socioeconomic impacts. Owing to the current shift from purely natural cryosphere sc...Cryosphere science research and development(R&D) has been strongly committed to public service, integrating natural sciences with socioeconomic impacts. Owing to the current shift from purely natural cryosphere scientific research to linking cryosphere science with socioeconomic and cultural science, cross-disciplinary research in this field is emerging, which advocates future cryosphere science research in this field. Utilizing the cryosphere service function(CSF), this study establishes CSF and its value evaluation system. Cryosphere service valuation can benefit the decisionmakers' and public's awareness of environmental protection. Implementing sustainable CSF utilization strategies and macroeconomic policymaking for global environmental protection will have profound and practical significance as well as avoid environmental degradation while pursuing short-term economic profits and achieving rapid economic development.展开更多
By using Contingent Value Method(CVM),WTP(Willingness to Pay) of wildlife in Jinggangshan Nature Reserve was studied,the overall existence value of wildlife resource(namely the sum of economic,social,ecological value ...By using Contingent Value Method(CVM),WTP(Willingness to Pay) of wildlife in Jinggangshan Nature Reserve was studied,the overall existence value of wildlife resource(namely the sum of economic,social,ecological value added on its existence value) in this area was calculated,and the statistics of primary social and economic factors affecting payment value were analyzed.600 questionnaires had been issued altogether and the recovery rate was 100%,583 of which were valid and the effective rate was 94.2 % which demonstrated that feedback sample quantity had reached the analysis requirement.The study result showed that interviewees with different social characteristics widely dispersed,which complied with the survey principle of random sampling;that the distribution curve of WTP was neither smooth nor normal and as 50 Yuan was frequently-used amount in their daily consumption,people tended to choose this option subconsciously;that WTP had notable correlation with education degree,monthly income and cognition degree,and had relation with age but no obvious relation with gender;that annual payment value per capita was within the research scope of wildlife payment value,that is 40-575 Yuan/(person·year).The final conclusion was that wildlife resource value in this area was 17 845 000 Yuan/year,which was of great significance to the protection of biological diversity and the formulation of corresponding protective measures in Jinggangshan Nature Reserve and even in the whole society.展开更多
Based on multi-source data,this paper evaluated the economic value of ecological services in the Yeyahu Wetland Nature Reserve,Beijing,China.The ecological services of wetland included gas regulation,water quality im-...Based on multi-source data,this paper evaluated the economic value of ecological services in the Yeyahu Wetland Nature Reserve,Beijing,China.The ecological services of wetland included gas regulation,water quality im-provement,biodiversity maintenance,erosion control,water supply,recreational opportunity,raw material supply and existence value.Multiple conventional evaluation methods were used to calculate the value of eight wetland services.The results showed that significant values came from biodiversity maintenance and recreational opportunity.The main reasons were as follows.Firstly,Yeyahu Wetland Nature Reserve was the habitat for migrant birds,and government had payed more efforts to protect precious birds.Secondly,the population is large in Beijing.People enjoyed going outside and enjoyed the natural and artificial wetland scenes.At the same time,most people were prepared to pay for wetland conservation.The decline of vegetation cover made the economic value of erosion control the lowest.While the shrink of water resource and the deteriorative water quality caused the economic value of water supply lower.The evaluation results could help decision-makers understand the present status of the Yeyahu Wetland Nature Reserve and provide a scientific basis for strategic decision.展开更多
Plant height is an important trait related to yield potential and plant architecture. A suitable plant height plays a crucial role in improvement of rice yield and lodging resistance. In this study, we found that the ...Plant height is an important trait related to yield potential and plant architecture. A suitable plant height plays a crucial role in improvement of rice yield and lodging resistance. In this study, we found that the traditional upland landrace 'Kaowenghan' (KWH) showed a special semi-dwarf phenotype. To identify the semi-dwarf gene from KWH, we raised BC2F4 semi-dwarf introgression lines (IL) by hybridization of the japonica rice cultivar 'Dianjingyoul' (DJY1) and KWH in a DJY1 background. The plant height of the homozygous semi-dwarf IL (IL-87) was significantly reduced compared with that of DJY1. The phenotype of the F1 progeny of the semi-dwarf IL-87 and DJY1 showed that the semi-dwarf phenotype was semi- dominant. QTL mapping indicated that the semi-dwarf phenotype was controlled by a major QTL qDH1 and was localized between the markers RM6696 and RM12047 on chromosome 1. We also developed near-isogenic lines (NIL) from the BC3F3 population, and found that the yield of homozygous NIL (NIL-2) was not significantly different compared to DJY1. Breeding value evaluation through investigation of the plant height of the progeny of NIL (NIL-2) and cultivars from different genetic background indicate that the novel semi-dwarf gene shows potential as a genetic resource for rice breeding.展开更多
China vigorously is carrying out the construction of green building and ecological city during " The 12 th five-Year plan". Now,although the identification system of design and operation have been implemente...China vigorously is carrying out the construction of green building and ecological city during " The 12 th five-Year plan". Now,although the identification system of design and operation have been implemented in the evaluation of green building,lacking of appropriate evaluation after use. The actual operation results of many buildings,which have got a green building logo,are not satisfied from the user 's perspective. In this paper,an evaluation method that combines the actual building energy consumption and users' satisfaction has been discussed,based on the post occupancy evaluation( POE) theory and the Big data technology. Through the comparison and analysis of building objective operational metrics and users subjective feelings indicators,the green buildings' POE has been achieved. Finally,the study analyzes the assessed value of green building's POE from the three-time dimensions,short-term,medium-term and long-term. And the outlook of the direction is looking forward to the follow-up study.展开更多
The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific...The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific value representing the actual thermal energy provided for blast furnace was proposed. A cost performance evaluation model of coal injection was built up for the optimal selection of various kinds of coal based on effective calorific value. The model contains two indicators: coal effective calorific value which has eight sub-indicators and coal injection cost which includes four sub-indicators. In addition, the calculation principle and application of cost performance evaluation model in a Chinese large-scale iron and steel company were comprehensively introduced. The evaluation results finally confirm that this novel model is of great significance to the optimal selection of blast furnace pulverized coal.展开更多
Ecosystem valuation can serve as a basis of scientific support for decision-making. So far, the most popular methods for ecosystem valuation are ecosystem service valuation (ESV), which is based on the utility of ec...Ecosystem valuation can serve as a basis of scientific support for decision-making. So far, the most popular methods for ecosystem valuation are ecosystem service valuation (ESV), which is based on the utility of ecosystem to human beings rather than on the objective value of the ecosystem. After more than 10 years' application, it has been found that all losses of ESV were about 10% of the benefits of human activities. In this paper, the ecosystem intrinsic value (EIV) is defined. EIV is an objective value that emerges from the existence, structures, functions and processes of ecosystem, but independent with man, man's will and preferences. The valuating approach and methods used for EIV were developed by using energy approach and the methods of emergy analysis and eco-exergy analysis. The EIV calculated by emergy from the substance, energy and information of ecosystem and by eco-exergy from the structure and function of ecosystem represents the existent value and the externally working capacity of ecosystem, respectively. The approach and methods of EIV evaluation were applied to Xiamen Bay, China. The results showed that the marine EIV in Xiamen Bay was 209 billion RMB, including 116 billion RMB of emergy and 92.4 billion RMB of eco-exergy in 2010, nearly 30 times of ESV and 8.5 times of the GDP of Xiamen marine industry in 2010. The EIV in unit area of Xiarnen Bay is more than 10 times higher than the average global ESV in estuaries. It implied a potential undervaluation to ecosystem value by ESV calculation, which may mislead decisions-making processes.展开更多
Six types of runoff plots were set up and an experimental study was carried out to examine natural rate of soil and water loss in the granite gneiss region of northern Jiangsu Province in China. Through correlation an...Six types of runoff plots were set up and an experimental study was carried out to examine natural rate of soil and water loss in the granite gneiss region of northern Jiangsu Province in China. Through correlation analysis of runoff and soil loss during 364 rainfall events, a simplified and convenient mathematical formula suitable for calculating the rainfall erosivity factor (R) for the local region was established. Other factors of the universal soil loss equation (USLE model) were also determined. Relative error analysis of the soil loss of various plots calculated by the USLE model on the basis of the observed values showed that the relative error ranged from -3.5% to 9.9% and the confidence level was more than 90%. In addition, the relative error was 5.64% for the terraced field and 12.36% for the sloping field in the practical application. Thus, the confidence level was above 87.64%. These results provide a scientific basis for forecasting and monitoring soil and water loss, for comprehensive management of small watersheds, and for soil and water conservation planning in the region.展开更多
Through the survey of National Nature Reserve of Tianmu Mountain,based on relevant data of tourists of Tianmu Mountain over the years,the paper had analyzed some problems about the application of contingent value meth...Through the survey of National Nature Reserve of Tianmu Mountain,based on relevant data of tourists of Tianmu Mountain over the years,the paper had analyzed some problems about the application of contingent value method(CVM) in forest recreational value evaluation.Then,it had evaluated the forest recreational value of National Nature Reserve of Tianmu Mountain in 2007 and obtained evaluation results.Through the statistics of tourists' payment targets,it had calculated the payment value of each function of Tianmu Nature Reserve.The functions were appreciating landscape,exercising,visiting historical sites,photographing,scientific research,picnic and camping,and religion ranking in order from higher to lower value.In terms of nonuse value,existence value was slightly higher than option value and heritage value.It could be known from above research that Tianmu Mountain had great tourism development potential.Finally,it had proposed some suggestions for publicity,project setting and artificial landscape construction.展开更多
China Seabuckthorn Ecological Project has been implemented for a decade (from 1999 to 2008) with an increasing seabuckthorn area of 1642.83 km2 in?the Sandstone Areas of Shanxi, Shaanxi and Inner Mongolia—the most se...China Seabuckthorn Ecological Project has been implemented for a decade (from 1999 to 2008) with an increasing seabuckthorn area of 1642.83 km2 in?the Sandstone Areas of Shanxi, Shaanxi and Inner Mongolia—the most serious soil erosion area in China. The vast artificial seabuckthorn forest’s value in environmental resource is assessed via 7 indicators on first-level, 15 indicators on secondary level and 35 indicators on third level in this research. As of 2008, the seabuckthorn environmental resource value is 10.017 billion RMB Yuan, which equals to 37.1 times of the project’s total investment of 0.27 billion RMB Yuan. It is proposed in this research that the external economical values such as soil and water conservation, windbreak and sand-fixation can be realized through relative national policies and taxes. Carbon-fixation and oxygen-producing value can be achieved through the international carbon trade.展开更多
In this experiment,the biological characteristics,the number of spikes per plant,the average number of panicles,the average spike length,and the average yield per plant of the wild Ribes rubrum Linn. were observed and...In this experiment,the biological characteristics,the number of spikes per plant,the average number of panicles,the average spike length,and the average yield per plant of the wild Ribes rubrum Linn. were observed and determined and the analytic hierarchy process( AHP)was applied to evaluate the economic value of 8 different sources of excellent plants of R. rubrum Linn. The results indicated that " RXF02", " RXF03" and " RXM05" performed well in the number of spikes per plant,average number of panicles,average yield per plant,and cold resistance,and the comprehensive scores were 9. 68,9. 44 and 9. 41,respectively.展开更多
[Objectives]This study was conducted to evaluate the value of local Brassicaceae potherb resources in Shiyan City.[Methods]Seven species of local Brassicaceae edible plants resources in Shiyan City,including Cardamine...[Objectives]This study was conducted to evaluate the value of local Brassicaceae potherb resources in Shiyan City.[Methods]Seven species of local Brassicaceae edible plants resources in Shiyan City,including Cardamine hirsuta L.,Cardamine flexuosa,Cardamine impatiens L.,Capsella bursa-pastoris(Linn.),Orychophragmus violaceus(L.)O.E.Schulz,Draba nemorosa L.,Rorippa indica(L.)Hiern.,were investigated using sampling method,and their value was evaluated.[Results]①Shiyan City was rich in resources of local Brassicaceae potherbs,mostly of which grew in humid areas.②In the communities of target species,there were 20 species of plants in 19 genera of 15 families in the arbor layer,19 species of plants in 16 genera from 15 families in the shrub layer,and 58 species of plants in 51 genera from 23 families in the herbaceous layer.The tree,shrub and herb species with the highest dominance Populus simonii var.przewalskii,Robinia pseudoacacia and Chrysanthemum indicum.Local Brassicaceae potherbs in Shiyan City have high edible and medicinal value,especially Cardamine,which has strong selenium-rich ability and is worthy of vigorous development.[Conclusions]This study provides scientific basis and reference for the development and utilization of local potherbs of Brassicaceae in this area.展开更多
The rights and interests value of mineral resources includes the prospecting rights value and the mining rights value. The mining rights value is made up of the min-eral resources value and the compensation value base...The rights and interests value of mineral resources includes the prospecting rights value and the mining rights value. The mining rights value is made up of the min-eral resources value and the compensation value based on the inputs of capitals and labors in different exploration stage, the prospecting rights value should be equal to ex-ploration differential rent of resources. According to the stage characteristic of mineral resources exploration and development, the initial evaluating methods and models are used to evaluate the prospecting rights and mining rights value.展开更多
基金by Undergraduate Innovation and Entrepreneurship Training Program of Anhui Province(S202312216042)Natural Science Key Research Project of Colleges and Universities in Anhui Province(2023AH051816)General Teaching Research Project of Anhui Province(2022jyxm665).
文摘An analytic hierarchy process(AHP)was employed to assess the applicability of 18 new and superior varieties of flowers in Hefei City flower border applications.A total of 12 indicators were selected from three distinct aspects of adaptability,ornamental characteristics and use traits,in order to establish a comprehensive evaluation model.The results demonstrate that grade I(J≥2.685)exhibits excellent application value,encompassing six species of plants,such asHydrangeamacrophylla‘Endless Summer’;grade II(2.684≤J≤2.420)is also of notable application value,encompassing five species of plants,such asCallistemonrigidus;grade III(2.419≤J≤2.615)is of average application value,including five species of plants,such asCrocosmiacrocosmiflora;grade IV(J≤2.16)is of relatively poor application value.The evaluation results may be utilized as a theoretical reference for the promotion of new and superior varieties in the flower border of Hefei.
基金Sponsored by the National Innovation Training Project for University Students in 2023(202312216024)Provincial Innovation Training Project for University Students in 2022(S202212216117)+1 种基金Key Research Project of Natural Science in Universities of Anhui Province(2023AH051816)General Teaching Research Project of Anhui Province(2022jyxm665).
文摘In order to further understand and better develop and utilize wild flower resources in Hefei City,a comprehensive evaluation model of landscape value of wild flowers in the application of flower border was constructed by field investigation and analytic hierarchy process(AHP).The application value of wild flowers in Hefei was evaluated by selecting evaluation indicators from three aspects of ornamental value,adaptability and resource potential.
文摘Ornamental value of 45 ornamental grass resources was evaluated by grey-correlation analysis based on the full investigation and research of ornamental grass resources in Kunming and with the characters of ornamental value, height, color of leaf and inflorescence as evaluating indexes. The results showed that the correlation degree with ideal species of 34 in the 50 ornamental grasses was higher than 0.6; Saccharum fallax, Erianthus longisetosus, Erianthus rufipilus, Zizania latifolia, etc. had better ornamental effects and their correlation degree with ideal species were 0.863 6, 0.812 5, 0.900 0 and 0.815 5, they can be used for landscaping directly.
基金Supported by Guangxi Scientific Research and Technology Development Program(14124005-2-4)Youth Tourism Expert Training Program of National Tourism Administration Operation System(TYETP201548,TYETP201445)+2 种基金Guangxi Education Department Qualification and Postgraduate Education Reform and Development Program(JGY2014077)Guangxi Superior and Characteristic Key Subject Open-end Fund(LYKF05)Guilin S&T Research and Development Program(20150110-5)~~
文摘The objective evaluation to the terrace cultural landscape heritage value can provide targeted scientific basis for continuation of terrace culture landscape and establishment of protection measures. On the basis of field investigation, expert consultation and literature review, combined with the AVC (Attraction、Vitality and Ca-pacity)theory and Analytic Hierarchy Process based on Fuzzy Comprehensive Evalu-ation, the terrace cultural landscape heritage protection evaluation system and eval-uation model, which selects 22 indicators from three levels including terrace culture landscape resources attraction, resources vitality and resources bearing capacity were structured. Based on col ection of data, material from field survey of China's most representative Yunnan Yuanyang Hani terrace, Hunan Ziquejie terrace and Longsheng Longji terrace and relevant mathematical calculation to determine evalua-tion index weights, organical y combined of qualitative with quantitative analysis, the diversity, reasonableness and accuracy of evaluation system is improved. Compre-hensive result of mathematical statistics showed that the rank of the cultural land-scape heritage value with the three most representative terraces in southern China is: γ(Hani)〉γ(Longji)〉γ(Ziquejie).
文摘The paper had pointed out that landscape resources were the roots that forest park attracted tourists, and objective and correct evaluation on landscape resources was the foundation to identify development tendency of forest park. Based on the field study, it had firstly conducted qualitative evaluation on landscape resources in Junwu Forest Park of Liuzhou City, concluded that forest landscape had distinctive feature and high quality, sceneries in forest were splendid and colorful, landscape combination was good and forest ecological environment was excellent in quality. Furthermore, in accordance with China Forest Park Landscape Resources Quality Grade Evaluation (GB/T18005-1999), quantitative evaluation had been conducted on landscape resources of Junwu Forest Park in Liuzhou City. On this basis, it had deeply analyzed development value of Junwu Forest Park, highlighting its forest aesthetics, popular science education, health care, tourism culture and tourism economic value, so as to provide reference for its planning and development.
基金this paper is funded by Project:2024 Youth Project of Philosophy and Social Sciences Planning in Guangdong Province“Research on the Relationship between Mandarin and Economic Development in Cantonese Speaking Areas (GD24YZY03)”.
文摘This paper investigates the related factors of Chinese learning engagement and performance of 377 students from three universities in Guangzhou of China,employs the value engineering method,and calculates the value coefficient of learning efficiency.From the value coefficient of Chinese language learning,it proves that over 60%of international students studying in China have a higher efficiency in learning Chinese.
基金funded by Project:2024 Youth Project of Philosophy and Social Sciences Planning in Guangdong Province“Research on the Relationship between Mandarin and Economic Development in Cantonese Speaking Areas(GD24YZY03)”.
文摘This paper introduces the Value Engineering method to calculate the value coefficient of Chinese learning efficiency for 377 international students by dimension.Results suggest that attention should be paid to male,European and American,rural,introverted,and“work or education needs”international students;Give full play to the driving role of the reference-type,explore the space for improving the learning efficiency of the improvement-type and attention-type,and pay attention to the problems of problem-type international students.
基金funded by National Basic Research Program of China (2013CBA01804, 2013CBA01808)Technology Services Network Program (STS-HHS Program) of Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciencesthe independent subject from Stake Key Laboratory of Cryospheric Sciences, Chinese Academy of Sciences
文摘Cryosphere science research and development(R&D) has been strongly committed to public service, integrating natural sciences with socioeconomic impacts. Owing to the current shift from purely natural cryosphere scientific research to linking cryosphere science with socioeconomic and cultural science, cross-disciplinary research in this field is emerging, which advocates future cryosphere science research in this field. Utilizing the cryosphere service function(CSF), this study establishes CSF and its value evaluation system. Cryosphere service valuation can benefit the decisionmakers' and public's awareness of environmental protection. Implementing sustainable CSF utilization strategies and macroeconomic policymaking for global environmental protection will have profound and practical significance as well as avoid environmental degradation while pursuing short-term economic profits and achieving rapid economic development.
文摘By using Contingent Value Method(CVM),WTP(Willingness to Pay) of wildlife in Jinggangshan Nature Reserve was studied,the overall existence value of wildlife resource(namely the sum of economic,social,ecological value added on its existence value) in this area was calculated,and the statistics of primary social and economic factors affecting payment value were analyzed.600 questionnaires had been issued altogether and the recovery rate was 100%,583 of which were valid and the effective rate was 94.2 % which demonstrated that feedback sample quantity had reached the analysis requirement.The study result showed that interviewees with different social characteristics widely dispersed,which complied with the survey principle of random sampling;that the distribution curve of WTP was neither smooth nor normal and as 50 Yuan was frequently-used amount in their daily consumption,people tended to choose this option subconsciously;that WTP had notable correlation with education degree,monthly income and cognition degree,and had relation with age but no obvious relation with gender;that annual payment value per capita was within the research scope of wildlife payment value,that is 40-575 Yuan/(person·year).The final conclusion was that wildlife resource value in this area was 17 845 000 Yuan/year,which was of great significance to the protection of biological diversity and the formulation of corresponding protective measures in Jinggangshan Nature Reserve and even in the whole society.
基金Under the auspices of National Natural Science Foundation of China (No. 40771170)Beijing Municipal Natural Science Foundation (No. 8082010)
文摘Based on multi-source data,this paper evaluated the economic value of ecological services in the Yeyahu Wetland Nature Reserve,Beijing,China.The ecological services of wetland included gas regulation,water quality im-provement,biodiversity maintenance,erosion control,water supply,recreational opportunity,raw material supply and existence value.Multiple conventional evaluation methods were used to calculate the value of eight wetland services.The results showed that significant values came from biodiversity maintenance and recreational opportunity.The main reasons were as follows.Firstly,Yeyahu Wetland Nature Reserve was the habitat for migrant birds,and government had payed more efforts to protect precious birds.Secondly,the population is large in Beijing.People enjoyed going outside and enjoyed the natural and artificial wetland scenes.At the same time,most people were prepared to pay for wetland conservation.The decline of vegetation cover made the economic value of erosion control the lowest.While the shrink of water resource and the deteriorative water quality caused the economic value of water supply lower.The evaluation results could help decision-makers understand the present status of the Yeyahu Wetland Nature Reserve and provide a scientific basis for strategic decision.
基金funded by grants from National Natural Science Foundation of China(31360330)Chinese Academy of Science(XDA08020203)
文摘Plant height is an important trait related to yield potential and plant architecture. A suitable plant height plays a crucial role in improvement of rice yield and lodging resistance. In this study, we found that the traditional upland landrace 'Kaowenghan' (KWH) showed a special semi-dwarf phenotype. To identify the semi-dwarf gene from KWH, we raised BC2F4 semi-dwarf introgression lines (IL) by hybridization of the japonica rice cultivar 'Dianjingyoul' (DJY1) and KWH in a DJY1 background. The plant height of the homozygous semi-dwarf IL (IL-87) was significantly reduced compared with that of DJY1. The phenotype of the F1 progeny of the semi-dwarf IL-87 and DJY1 showed that the semi-dwarf phenotype was semi- dominant. QTL mapping indicated that the semi-dwarf phenotype was controlled by a major QTL qDH1 and was localized between the markers RM6696 and RM12047 on chromosome 1. We also developed near-isogenic lines (NIL) from the BC3F3 population, and found that the yield of homozygous NIL (NIL-2) was not significantly different compared to DJY1. Breeding value evaluation through investigation of the plant height of the progeny of NIL (NIL-2) and cultivars from different genetic background indicate that the novel semi-dwarf gene shows potential as a genetic resource for rice breeding.
文摘China vigorously is carrying out the construction of green building and ecological city during " The 12 th five-Year plan". Now,although the identification system of design and operation have been implemented in the evaluation of green building,lacking of appropriate evaluation after use. The actual operation results of many buildings,which have got a green building logo,are not satisfied from the user 's perspective. In this paper,an evaluation method that combines the actual building energy consumption and users' satisfaction has been discussed,based on the post occupancy evaluation( POE) theory and the Big data technology. Through the comparison and analysis of building objective operational metrics and users subjective feelings indicators,the green buildings' POE has been achieved. Finally,the study analyzes the assessed value of green building's POE from the three-time dimensions,short-term,medium-term and long-term. And the outlook of the direction is looking forward to the follow-up study.
基金Project(51134008)supported by the National Natural Science Foundation of ChinaProject(2012CB720401)supported by the National Basic Research Program of China
文摘The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific value representing the actual thermal energy provided for blast furnace was proposed. A cost performance evaluation model of coal injection was built up for the optimal selection of various kinds of coal based on effective calorific value. The model contains two indicators: coal effective calorific value which has eight sub-indicators and coal injection cost which includes four sub-indicators. In addition, the calculation principle and application of cost performance evaluation model in a Chinese large-scale iron and steel company were comprehensively introduced. The evaluation results finally confirm that this novel model is of great significance to the optimal selection of blast furnace pulverized coal.
文摘Ecosystem valuation can serve as a basis of scientific support for decision-making. So far, the most popular methods for ecosystem valuation are ecosystem service valuation (ESV), which is based on the utility of ecosystem to human beings rather than on the objective value of the ecosystem. After more than 10 years' application, it has been found that all losses of ESV were about 10% of the benefits of human activities. In this paper, the ecosystem intrinsic value (EIV) is defined. EIV is an objective value that emerges from the existence, structures, functions and processes of ecosystem, but independent with man, man's will and preferences. The valuating approach and methods used for EIV were developed by using energy approach and the methods of emergy analysis and eco-exergy analysis. The EIV calculated by emergy from the substance, energy and information of ecosystem and by eco-exergy from the structure and function of ecosystem represents the existent value and the externally working capacity of ecosystem, respectively. The approach and methods of EIV evaluation were applied to Xiamen Bay, China. The results showed that the marine EIV in Xiamen Bay was 209 billion RMB, including 116 billion RMB of emergy and 92.4 billion RMB of eco-exergy in 2010, nearly 30 times of ESV and 8.5 times of the GDP of Xiamen marine industry in 2010. The EIV in unit area of Xiarnen Bay is more than 10 times higher than the average global ESV in estuaries. It implied a potential undervaluation to ecosystem value by ESV calculation, which may mislead decisions-making processes.
文摘Six types of runoff plots were set up and an experimental study was carried out to examine natural rate of soil and water loss in the granite gneiss region of northern Jiangsu Province in China. Through correlation analysis of runoff and soil loss during 364 rainfall events, a simplified and convenient mathematical formula suitable for calculating the rainfall erosivity factor (R) for the local region was established. Other factors of the universal soil loss equation (USLE model) were also determined. Relative error analysis of the soil loss of various plots calculated by the USLE model on the basis of the observed values showed that the relative error ranged from -3.5% to 9.9% and the confidence level was more than 90%. In addition, the relative error was 5.64% for the terraced field and 12.36% for the sloping field in the practical application. Thus, the confidence level was above 87.64%. These results provide a scientific basis for forecasting and monitoring soil and water loss, for comprehensive management of small watersheds, and for soil and water conservation planning in the region.
基金Supported by the National Natural Science Foundation of Zhejiang Province (Y304369)~~
文摘Through the survey of National Nature Reserve of Tianmu Mountain,based on relevant data of tourists of Tianmu Mountain over the years,the paper had analyzed some problems about the application of contingent value method(CVM) in forest recreational value evaluation.Then,it had evaluated the forest recreational value of National Nature Reserve of Tianmu Mountain in 2007 and obtained evaluation results.Through the statistics of tourists' payment targets,it had calculated the payment value of each function of Tianmu Nature Reserve.The functions were appreciating landscape,exercising,visiting historical sites,photographing,scientific research,picnic and camping,and religion ranking in order from higher to lower value.In terms of nonuse value,existence value was slightly higher than option value and heritage value.It could be known from above research that Tianmu Mountain had great tourism development potential.Finally,it had proposed some suggestions for publicity,project setting and artificial landscape construction.
文摘China Seabuckthorn Ecological Project has been implemented for a decade (from 1999 to 2008) with an increasing seabuckthorn area of 1642.83 km2 in?the Sandstone Areas of Shanxi, Shaanxi and Inner Mongolia—the most serious soil erosion area in China. The vast artificial seabuckthorn forest’s value in environmental resource is assessed via 7 indicators on first-level, 15 indicators on secondary level and 35 indicators on third level in this research. As of 2008, the seabuckthorn environmental resource value is 10.017 billion RMB Yuan, which equals to 37.1 times of the project’s total investment of 0.27 billion RMB Yuan. It is proposed in this research that the external economical values such as soil and water conservation, windbreak and sand-fixation can be realized through relative national policies and taxes. Carbon-fixation and oxygen-producing value can be achieved through the international carbon trade.
基金Supported by Key Project of Heilongjiang Forest Industry Administration(sgzjY 2013019)
文摘In this experiment,the biological characteristics,the number of spikes per plant,the average number of panicles,the average spike length,and the average yield per plant of the wild Ribes rubrum Linn. were observed and determined and the analytic hierarchy process( AHP)was applied to evaluate the economic value of 8 different sources of excellent plants of R. rubrum Linn. The results indicated that " RXF02", " RXF03" and " RXM05" performed well in the number of spikes per plant,average number of panicles,average yield per plant,and cold resistance,and the comprehensive scores were 9. 68,9. 44 and 9. 41,respectively.
基金Hubei Provincial Technological Innovation Special Major Project(2019ABA113)Wuhan Polytechnic University-Deyuan Health Industry Group Academician Expert Workstation Horizontal Project(whpu-2019-cg-138,whpu-2018-cg-041,whpu-2018-cg-140).
文摘[Objectives]This study was conducted to evaluate the value of local Brassicaceae potherb resources in Shiyan City.[Methods]Seven species of local Brassicaceae edible plants resources in Shiyan City,including Cardamine hirsuta L.,Cardamine flexuosa,Cardamine impatiens L.,Capsella bursa-pastoris(Linn.),Orychophragmus violaceus(L.)O.E.Schulz,Draba nemorosa L.,Rorippa indica(L.)Hiern.,were investigated using sampling method,and their value was evaluated.[Results]①Shiyan City was rich in resources of local Brassicaceae potherbs,mostly of which grew in humid areas.②In the communities of target species,there were 20 species of plants in 19 genera of 15 families in the arbor layer,19 species of plants in 16 genera from 15 families in the shrub layer,and 58 species of plants in 51 genera from 23 families in the herbaceous layer.The tree,shrub and herb species with the highest dominance Populus simonii var.przewalskii,Robinia pseudoacacia and Chrysanthemum indicum.Local Brassicaceae potherbs in Shiyan City have high edible and medicinal value,especially Cardamine,which has strong selenium-rich ability and is worthy of vigorous development.[Conclusions]This study provides scientific basis and reference for the development and utilization of local potherbs of Brassicaceae in this area.
文摘The rights and interests value of mineral resources includes the prospecting rights value and the mining rights value. The mining rights value is made up of the min-eral resources value and the compensation value based on the inputs of capitals and labors in different exploration stage, the prospecting rights value should be equal to ex-ploration differential rent of resources. According to the stage characteristic of mineral resources exploration and development, the initial evaluating methods and models are used to evaluate the prospecting rights and mining rights value.