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The coordinated evolution of ecological environment,public service,and tourism economy along the Silk Road Economic Belt,using the Dual-Carbon Targets
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作者 Shuo Yang Wei Guo +1 位作者 Tianjun Xu Tongtong Liu 《Chinese Journal of Population,Resources and Environment》 2024年第1期34-47,共14页
Carbon peak and carbon neutrality(dual-carbon)are important targets for the international response to climate change.The Silk Road Economic Belt is a strategic resource region and is important for future ecological en... Carbon peak and carbon neutrality(dual-carbon)are important targets for the international response to climate change.The Silk Road Economic Belt is a strategic resource region and is important for future ecological environment and tourism development.Based on the“dual-carbon”targets,the Single index quantification,Multiple index synthesis,and Poly-criteria integration evaluation model were used in this study to measure the coordinated development index of the ecological environment,public service,and tourism economy along the Silk Road Economic Belt and to analyze its spatial and temporal evolution.Further,it explores the dynamic evolution and development trend of the three systems using the Kernel Density and Grey Markov Prediction Model.The results show that the coordinated development index along this region needs to be improved during the study period.Furthermore,the coordinated development index of the Southwest region is relatively higher than that of the Northwest region.From the development trend of the three systems,all of them develop in a stable manner;however,the tourism economy system is easily affected by external disturbances.The coordinated development index of the three systems changes dynamically and tends to be in a good state of coordination.There is a certain spatial and temporal heterogeneity.The gravity center of the coordinated development index has been in the Southwest region.During the forecast period,the coordinated development index along this region will improve significantly,while insufficient and unbalanced development will continue. 展开更多
关键词 Dual-carbon ecological environment Public services Tourist economy Silk Road Economic Belt
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Coupling coordination analysis of Mazu culture,socio-economy and ecological environment of Meizhou Island
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作者 FU Wei-jia WU Ying-qi +2 位作者 LUO Zi-xuan YAO Jun-bing FU Li-jun 《Ecological Economy》 2024年第1期85-100,共16页
Taking the pilgrimage,tourism and cultural island of Meizhou Island as an example,the evaluation index system of the coupling and coordinated development of“Mazu culture,socio-economy,eco-environment”(MSE)compound s... Taking the pilgrimage,tourism and cultural island of Meizhou Island as an example,the evaluation index system of the coupling and coordinated development of“Mazu culture,socio-economy,eco-environment”(MSE)compound system was constructed.The index weights were determined by AHP-entropy method,and the coupling degree,coordinated degree,comprehensive evaluation index and grey correlation degree of MSE system of Mazu Island from 2012 to 2022 were measure.The results showed that:(1)the comprehensive evaluation indexes of the three subsystems was on the rise in general,but the evaluation index of the ecological subsystems increased relatively slowly.(2)The coupling degree was only in the running-in stage in 2012,and the other years were in the coordinated coupling stage.(3)The coupling coordination degree increased from 0.35 in 2012 to 0.82 in 2022,the coupling coordination level was changed from mild imbalance to good coordination.(4)Through the comparison of grey correlation degree,the 24 indexes in the evaluation index system had great influence on the coupling coordination degree of MSE system.The coupling coordination degree was closely related to the development of socio-economy and the spread of Mazu culture.With the rapid development of tourism brought about by the spread of Mazu culture,the pressure on the ecological environment will be increasing.Compared with the rapid growth of tourism and economy,it is equally important to strengthen environmental protection and pay attention to the quality of ecological environment development. 展开更多
关键词 Meizhou Island Mazu culture socio-economy ecological environment comprehensive evaluation index coupling coordination degree
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Coordinated Development of Tourism Economy and Ecological Environment Coupling in Mountainous Provinces:A Case Study of Guizhou
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作者 WU Bingqin ZHANG Chengru 《Journal of Landscape Research》 2023年第4期57-61,共5页
The degree of coupling coordination can reflect the intensity of interaction between multiple-indicator system,and can characterize the harmonious and consistent degree of benign correlation between them.It is an effe... The degree of coupling coordination can reflect the intensity of interaction between multiple-indicator system,and can characterize the harmonious and consistent degree of benign correlation between them.It is an effective measurement method for analyzing the level of coordinated development of tourism economy and ecological environment coupling.Guizhou,a mountainous province,is taken as the research object in this paper.Using entropy method and coupling coordination model,the coordinated development level of tourism economy and ecological environment coupling during 2011-2020 is measured and analyzed,and the coordinated development strategies for the tourism economy and ecological environment coupling in Guizhou,a mountainous province,are proposed. 展开更多
关键词 tourism economy ecological environment Coupling coordination degree Mountainous province Guizhou Province
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Spatiotemporal variation of ecological environment quality and extreme climate drivers on the Qinghai-Tibetan Plateau 被引量:1
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作者 SUN Tao YANG Yan-mei +5 位作者 WANG Ze-gen YONG Zhi-wei XIONG Jun-nan MA Guo-li LI Jie LIU Ao 《Journal of Mountain Science》 SCIE CSCD 2023年第8期2282-2297,共16页
Protecting the ecological security of the Qinghai-Tibet Plateau(QTP)is of great importance for global ecology and climate.Over the past few decades,climate extremes have posed a significant challenge to the ecological... Protecting the ecological security of the Qinghai-Tibet Plateau(QTP)is of great importance for global ecology and climate.Over the past few decades,climate extremes have posed a significant challenge to the ecological environment of the QTP.However,there are few studies that explored the effects of climate extremes on ecological environment quality of the QTP,and few researchers have made quantitative analysis.Hereby,this paper proposed the Ecological Environmental Quality Index(EEQI)for analyzing the spatial and temporal variation of ecological environment quality on the QTP from 2000 to 2020,and explored the effects of climate extremes on EEQI based on Geographically and Temporally Weighted Regression(GTWR)model.The results showed that the ecological environment quality in QTP was poor in the west,but good in the east.Between 2000 and 2020,the area of EEQI variation was large(34.61%of the total area),but the intensity of EEQI variation was relatively low and occurred mainly by a slightly increasing level(EEQI change range of 0.05-0.1).The overall ecological environment quality of the QTP exhibited spatial and temporal fluctuations,which may be attributed to climate extremes.Significant spatial heterogeneity was observed in the effects of the climate extremes on ecological environment quality.Specifically,the effects of daily temperature range(DTR),number of frost days(FD0),maximum 5-day precipitation(RX5day),and moderate precipitation days(R10)on ecological environment quality were positive in most regions.Furthermore,there were significant temporal differences in the effects of consecutive dry days(CDD),consecutive wet days(CWD),R10,and FD0 on ecological environment quality.These differences may be attributed to variances in ecological environment quality,climate extremes,and vegetation types across different regions.In conclusion,the impact of climate extremes on ecological environment quality exhibits complex patterns.These findings will assist managers in identifying changes in the ecological environment quality of the QTP and addressing the effects of climate extremes. 展开更多
关键词 ecological environment quality Extreme climate Geographically and Temporally Weighted Regression Qinghai-Tibetan Plateau
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Marine Ranching Engineering Collaborative Innovation from the Perspective of Ecological Environment
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作者 WAN Xiaole ZHANG Guixian LI Qianqian 《Journal of Ocean University of China》 SCIE CAS CSCD 2023年第4期1151-1163,共13页
As a resource development model with both economic and ecological functions,the environmental friendliness of marine ranching products meets the environmental needs of consumers.However,the lack of technological innov... As a resource development model with both economic and ecological functions,the environmental friendliness of marine ranching products meets the environmental needs of consumers.However,the lack of technological innovation ability limits the development of marine ranching.Therefore,this research builds a marine ranching collaborative innovation system with multi-agent participation.Evolutionary game theory is used to analyze strategic choices of all parties and the conditions of system equilibrium,and numerical simulation is used to analyze the effect of relevant factors.This paper integrates the benefits from the improvement of environmental friendliness into the payoff matrix,and explains the significance of collaborative innovation to the development of marine ranching from the perspective of ecological environment.The results showed:the participation willingness of marine ranching enterprises is positively related to open innovation subject,while the participation willingness of the other two parties is negatively related to the government;The incentive effect of collaboration is negatively correlated with the government’s will,positively correlated with the other two parties;The incentive effect of government subsidies positively affects the willingness of the three parties to participate.Finally,suggestions are provided for each participant to maintain the strategic choice of marine ranching collaborative innovation system. 展开更多
关键词 marine ranching engineering ecological environment collaborative innovation evolutionary game numerical simulations
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3D Model Construction and Ecological Environment Investigation on a Regional Scale Using UAV Remote Sensing
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作者 Chao Chen Yankun Chen +7 位作者 Haohai Jin Li Chen Zhisong Liu Haozhe Sun Junchi Hong Haonan Wang Shiyu Fang Xin Zhang 《Intelligent Automation & Soft Computing》 SCIE 2023年第8期1655-1672,共18页
The acquisition of digital regional-scale information and ecological environmental data has high requirements for structural texture,spatial res-olution,and multiple parameter categories,which is challenging to achiev... The acquisition of digital regional-scale information and ecological environmental data has high requirements for structural texture,spatial res-olution,and multiple parameter categories,which is challenging to achieve using satellite remote sensing.Considering the convenient,facilitative,and flexible characteristics of UAV(unmanned air vehicle)remote sensing tech-nology,this study selects a campus as a typical research area and uses the Pegasus D2000 equipped with a D-MSPC2000 multi-spectral camera and a CAM3000 aerial camera to acquire oblique images and multi-spectral data.Using professional software,including Context Capture,ENVI,and ArcGIS,a 3D(three-dimensional)campus model,a digital orthophoto map,and multi-spectral remote sensing map drawing are realized,and the geometric accuracy of typical feature selection is evaluated.Based on a quantitative remote sensing model,the campus ecological environment assessment is performed from the perspectives of vegetation and water body.The results presented in this study could be of great significance to the scientific management and sustainable development of regional natural resources. 展开更多
关键词 Unmanned air vehicle multi-spectral camera oblique photography 3D model construction ecological environment investigation regional scale
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Countermeasures for Qinghai-Tibet Plateau to Cope with Climate Change and Ecological Environment Safety 被引量:7
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作者 伏洋 张国胜 +1 位作者 李凤霞 刘宝康 《Agricultural Science & Technology》 CAS 2010年第1期140-146,共7页
The monitoring,prediction and assessment of status about climate changes and ecological environment at home and abroad were discussed in this study,and the scientific significance and countermeasures for Qinghai-Tibet... The monitoring,prediction and assessment of status about climate changes and ecological environment at home and abroad were discussed in this study,and the scientific significance and countermeasures for Qinghai-Tibet Plateau to cope with these problems were also put forward. 展开更多
关键词 Climate chages Cope with ecological environment SAFETY Qinghai-Tibet Plateau COUNTERMEASURES
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Relationship between Rice Cultural Diversity and Ecological Environment in Yunnan Province of China 被引量:3
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作者 曾亚文 杜娟 +3 位作者 普晓英 罗曦 杨树明 杨涛 《Agricultural Science & Technology》 CAS 2012年第10期2247-2256,共10页
[Objective] This paper aims to confirm that Yunnan is one origin center of rice and human in the world.[Method] The complicated and unique ecological environment in Yunnan makes Yunnan Province the largest center of g... [Objective] This paper aims to confirm that Yunnan is one origin center of rice and human in the world.[Method] The complicated and unique ecological environment in Yunnan makes Yunnan Province the largest center of genetic diversity and cultural diversity of rice and human being as well as the cradle of human childhood.[Result] The genetic diversity and cultural diversity of rice and human being is closely related to the ecosystem diversity.Rice civilization in Yunnan can be divided into four types,including the diversity center region of rice civilization in southwestern Yunnan,diffusion region of rice civilization of Hani-Zhuang in southern Yunnan,rice civilization region of water-drought rotation in central Yunnan and poverty region of rice civilization in northern Yunnan.Southwestern Yunnan is not only the center of genetic ecological diversity and rice cultural diversity,but also the center of origin and diversity of crop genetic diversity.It is not only a transitional region among East Asia continent,South Asian sub-continent and Indo-China Peninsula,but also a core integration area of Chinese culture,Indian culture and Mid-south Peninsula culture which all merge with the local culture.[Conclusion] Yunnan is one common sphere where the origin of human evolution is closely related to the origin of rice evolution. 展开更多
关键词 Rice culture ecological environment Origin evolution Human being YUNNAN
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Research on the Low-carbon-high-value Agriculture Technology in the Comprehensive Improvement of Intra-county Environment Pollution——Taking the Development of Cultivation and Breeding Industry in the Ecological Cyclic Agricultural Garden in Shaoshan Irri 被引量:4
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作者 李林杰 许振成 +5 位作者 罗琳 黄璜 李劲松 赵志彬 陈月华 何清林 《Meteorological and Environmental Research》 CAS 2010年第7期64-67,71,共5页
The comprehensive improvement strategy of intra-county environment pollution in the city and countryside was searched.By the research method which combined the microscopic view,the macroscopic view with the dynamic pe... The comprehensive improvement strategy of intra-county environment pollution in the city and countryside was searched.By the research method which combined the microscopic view,the macroscopic view with the dynamic perspective,the seriousness of rural water quality,soil and atmospheric pollution in Xiangxiang,Xiangtan and the surrounding areas in Shaoshan irrigated area was revealed.The control measure which was 'four-dimensional pollution in the city and countryside'—— low-carbon-high-value agriculture and the technology innovation was proposed.The low-carbon-high-value technology innovation industrialization demonstration in three parts which included the pre-production,mid-production and post-production deep-processing of cultivation and breeding industry in the ecological cyclic agricultural garden in Shaoshan irrigated area was the driving force.We tried to propel the low-carbon ecological cultivation and breeding industry which included the paddy rice,grass,tree,medicinal herbs and pig,cow,chick,duck,fish.We wanted to relieve the structural unbalance of previous cultivation and breeding industry,'cheap grain hurting the farmers' and the short-leg problem of social-economic-ecological benefit.The results showed that the low-carbon-high-value agricultural system was a poly-generation technology system which promoted the multi-level and grading utilization,saved the energy,reduced the consumption and cleaned the production based on the ecology. 展开更多
关键词 Comprehensive control of intra-county environment pollution Four-dimensional pollution in the city and countryside Low-carbon-high-value agriculture ecological cyclic agriculture environmental safety-urban and rural cyclic coupling mode Low-carbon-high-value technology innovation industrialization demonstration Processing-tree-medicinal herbs-grass-paddy rice-duck-cow-chick-pig-fish-marsh gas-tourism eco-project China
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Space-Time Evolution and Problems of Ecological Environment of Junggar Basin 被引量:1
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作者 张静 王文科 杨峰 《Journal of Landscape Research》 2011年第6期45-50,共6页
Geological conditions of Junggar Basin are analyzed in this study,it is located in the northwest arid areas of China with a vulnerable supergene eco-environment.Based on the relationship between underground water and ... Geological conditions of Junggar Basin are analyzed in this study,it is located in the northwest arid areas of China with a vulnerable supergene eco-environment.Based on the relationship between underground water and ecological environment,natural geological conditions are combined to classify ecosystem types in the study area,space-time evolution of its eco-environment in three periods is discussed:1990,2000 and 2009;development and utilization of water resources in Junggar Basin as well as its eco-environment evolution laws are taken to analyze problems brought by eco-environment changes,focusing on the following points:A.decreasing area of permanent glacier in mountainous ecosystem,increasing volume of river runoff,reducing capacity of mountainous ecosystem in conserving water resources;B.decreasing underground water,overflowing belt shifting northwards;C.shrinking lake area;D.degrading natural vegetation;E.expanding area of cultivated land and construction land;F.more cultivated land influenced by salinization,showing an increasing trend between 1990 and 2000,maintaining stable between 2000 and 2009,which implies that traditional agricultural irrigation method has brought significant influence on the utilization of water resources,and resulted in the shifting area of salinization. 展开更多
关键词 SUPERGENE ecological environment ECOSYSTEM type Remote sensing INTERPRETATION Water RESOURCE
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Effect of Climate Change on Wetland Ecological Environment in Heihe River Basin in Recent 51 Years 被引量:9
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作者 马鸿勇 张峰 张洁 《Meteorological and Environmental Research》 CAS 2010年第12期99-103,共5页
[Objective] The effect of climate change on wetland ecological environment in Heihe River basin was researched.[Method] Based on meteorological data from six meteorological stations in Heihe River basin from 1959 to 2... [Objective] The effect of climate change on wetland ecological environment in Heihe River basin was researched.[Method] Based on meteorological data from six meteorological stations in Heihe River basin from 1959 to 2009,the effect of climate change on wetland ecological environment in Heihe River basin in recent 51 years was studied by means of statistical method.[Result] Temperature and precipitation in Heihe River basin showed obvious increasing trend in recent 51 years,especially in recent 20 years;climate change made Heihe River basin more and more dry,specially in mountain area;wetland ecological environment closely related to climate responded to climate change,such as groundwater level rise,wetland area decrease,agriculture planting structure change,meteorological disaster increase,destroyed biodiversity and so on.[Conclusion] Our study had important significance for the protection and development of wetland resources. 展开更多
关键词 Heihe wetland Climatic change ecological environment INFLUENCE China
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On Ecological Design of Indoor Environment Based on Energy-conservation and Gas Emission-reduction 被引量:2
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作者 侯鹏程 陈佳妮 《Journal of Landscape Research》 2010年第3期23-25,29,共4页
With the rapid development of economy, requirements on indoor environment design are getting higher and higher, but its prosperity brings ecological environment serious destruction and over consumption of resources. U... With the rapid development of economy, requirements on indoor environment design are getting higher and higher, but its prosperity brings ecological environment serious destruction and over consumption of resources. Under the global environment of the sustainable development, the principles of indoor environment design were analyzed ecologically and corresponding implementation methods were proposed to provide reference for energy-conservation and gas emission-reduction in the ecological system of indoor environment. 展开更多
关键词 Indoor environment ecological design ENERGY-CONSERVATION
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Landscape Design for Ecologically Livable Residential Environment 被引量:2
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作者 阎淑龙 《Journal of Landscape Research》 2011年第8期1-4,共4页
From the perspective of adaption to local conditions, the paper had analyzed that it had emphasized visual perception, plane design and grade while functionality, vertical space and applicability of residential enviro... From the perspective of adaption to local conditions, the paper had analyzed that it had emphasized visual perception, plane design and grade while functionality, vertical space and applicability of residential environmental landscapes were neglected. Landscapes in ecologically livable environment were characterized by pretty natural environment, safe and spacious activity place, gentle and harmonious communication space, heavy cultural characteristic, and distinctive landscape feature. It had put forward design ideas for ecologically livable environment covering humanity, integrity, diversity and culture. The design thoughts were adjusting to local conditions, respecting the site, inheriting the spirit of place, conducting reasonable layout, rationally utilizing water, constructing harmonious plants community, creating comfortable activity place, highlighting theme, and manifesting culture. Ecological and livable concept should be integrated into landscape design. It was regarded that green and ecological landscape design was the key for urban environment reconstruction and the responsibility of each designer. 展开更多
关键词 LIVING environment HUMANITY Diversity Culture SPIRIT of PLACE Water-loving ecological effect
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Impact of Ecological Environment on Tourism Development in Shandong Province, China
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作者 HANG Dongmei ZHAO Weijun +1 位作者 LIU Xiaomei XIN Yanyan 《Journal of Landscape Research》 2021年第5期47-50,共4页
With the development of the tourism year,tourism fever has become an emerging vocabulary among the public.However,the maintenance of a good ecological environment is the basis for maximizing the benefits of resources ... With the development of the tourism year,tourism fever has become an emerging vocabulary among the public.However,the maintenance of a good ecological environment is the basis for maximizing the benefits of resources and the environment and developing tourism industry.In this paper,forest land,wetland coverage area and urban air quality were as the indicators of ecological environment quality,and the correlation between ecological environment quality and the number of inbound tourists and tourism income as well as the number of domestic tourists and tourism income in Shandong Province was analyzed.The results show that the overall ecological environment quality of Shandong Province has been continuously improved since 2008.By 2015,the forestry coverage rate increased to 24%,and the wetland area also expanded to 173 hm2.The total tourism income of Shandong Province continued to increase from 245.22 billion yuan in 2009 to 587.80 billion yuan in 2014,and the number of foreign tourists also rose from 3.10 million to 4.457 million.Typical eco-environmental quality indicators such as forest area and forest greening rate had a significant linear correlation with tourism income,and the correlation coefficients were all higher than 0.85.The results can provide relevant scientific reference for the future development of ecotourism and the protection of ecological environment. 展开更多
关键词 ecological environment tourism income Correlation analysis Shandong Province
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Embodiment of "Ecological,Cultural,Landscape,Vigorous" Campus—A Case Study of the Planning of Environmental greening in New Campus of Laiwu Vocational and Technical College
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作者 赵春仙 贾宁 《Journal of Landscape Research》 2010年第5期1-4,共4页
The general situation of new campus of Laiwu Vocational and Technical College was introduced.The guiding ideology was that with the purpose of serving faculties and students as the purpose,the designing will be fully ... The general situation of new campus of Laiwu Vocational and Technical College was introduced.The guiding ideology was that with the purpose of serving faculties and students as the purpose,the designing will be fully combined with excellent natural environment and campus technology and culture,and with ecological landscape as the major and sustainable development as the aim,striving to highlight the theme and landscape,a comfortable,vigorous,innovative and beautiful outdoor spatial environment would be created.In accordance with the planning principle of "people-orientation,ecology,sustainable development,embodying the characteristics of landscapes,overall planning and varied practices",based on the planning thought of "procession of whole and part,of technology and art,of buildings and environment and of landscaping methods",the overall planning and regional division of constructing "ecological,cultural,landscape,vigorous" campus was proposed,that is,the campus environment would be divided into six functional zones(the entrance door zone,footsteps zone,teaching activities zone,life services zone,athletic activities zone and ecological recreation zone) and ten scenic areas(gate landscape area,scientific and technological culture corridor,ecological recreation area,culture exhibition area,Xiushui Lake scenic area,knowledge park,living landscape area,art exhibition area,mountainous scenic area and sports activities area),and meanwhile landscaping plants were planned. 展开更多
关键词 CAMPUS environment ecological LANDSCAPE Technology and culture Green land PLANNING
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Ecological Compensation Design of Residential Environment in Small Towns
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作者 吴银玲 《Journal of Landscape Research》 2009年第9期14-18,共5页
In view of the current situation of the residential environment in small towns,some methods of ecological compensation design were discussed,such as the improvement of planting quality,the selection of suitable tree s... In view of the current situation of the residential environment in small towns,some methods of ecological compensation design were discussed,such as the improvement of planting quality,the selection of suitable tree species,reasonable construction and management methods,expansion of space and so on.Meanwhile,some rational suggestions were put forward on strengthening the ecological and cultural construction of residential areas and enhancing residents' awareness of environmental protection. 展开更多
关键词 SMALL TOWN RESIDENTIAL environment ecological COMPENSATION design
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Design and Applications of Land Resources and Ecological Environment Information System: A Case Study of Zigui County in the Three Gorges Area of China 被引量:25
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作者 ZHOUYONG WANGSHANQIN +1 位作者 DONGYUANHUA YANGLINZHANG 《Pedosphere》 SCIE CAS CSCD 2002年第4期373-381,共9页
The design and applications of a land information system built upon ARC/INFO and ArcView are presented. The proposed system not only maintains all the advantages of the more conventional implementations but also enhan... The design and applications of a land information system built upon ARC/INFO and ArcView are presented. The proposed system not only maintains all the advantages of the more conventional implementations but also enhances them in the following ways: 1) the application program interfaces (API) are used to transmit data and messages among different parts of the system; 2) the integrated system can support studies on land evaluations and ecological analyses by efficient management of attribute and spatial data and 3) correspondingly, spatial records and attributive records are linked by the same identifiers (ID). A case study application in Zigui County of the Three Gorges Area in China demonstrates that the system could employ land-use maps and land property data to predicate and analyze the land utilization changes in the past, present and future. The ecological environment analysis can be carried out with the data of land, economics and terrain map used, showing that the system can be widely applied, especially to survey land and environment resources in the countryside area. 展开更多
关键词 attribute database ecological environment land resources spatial database
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Ecological environment quality evaluation of the Sahel region in Africa based on remote sensing ecological index 被引量:12
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作者 WU Shupu GAO Xin +3 位作者 LEI Jiaqiang ZHOU Na GUO Zengkun SHANG Baijun 《Journal of Arid Land》 SCIE CSCD 2022年第1期14-33,共20页
Long-term monitoring of the ecological environment changes is helpful for the protection of the ecological environment.Based on the ecological environment of the Sahel region in Africa,we established a remote sensing ... Long-term monitoring of the ecological environment changes is helpful for the protection of the ecological environment.Based on the ecological environment of the Sahel region in Africa,we established a remote sensing ecological index(RSEI)model for this region by combining dryness,moisture,greenness,and desertification indicators.Using the Moderate-resolution Imaging Spectroradiometer(MODIS)data in Google Earth Engine(GEE)platform,this study analyzed the ecological environment quality of the Sahel region during the period of 2001-2020.We used liner regression and fluctuation analysis methods to study the trend and fluctuation of RSEI,and utilized the stepwise regression approach to analyze the contribution of each indicator to the RSEI.Further,the correlation analysis was used to analyze the correlation between RSEI and precipitation,and Hurst index was applied to evaluate the change trend of RSEI in the future.The results show that RSEI of the Sahel region exhibited spatial heterogeneity.Specifically,it exhibited a decrease in gradient from south to north of the Sahel region.Moreover,RSEI in parts of the Sahel region presented non-zonal features.Different land-cover types demonstrated different RSEI values and changing trends.We found that RSEI and precipitation were positively correlated,suggesting that precipitation is the controlling factor of RSEI.The areas where RSEI values presented an increasing trend were slightly less than the areas where RSEI values presented a decreasing trend.In the Sahel region,the areas with the ecological environment characterized by continuous deterioration and continuous improvement accounted for 44.02%and 28.29%of the total study area,respectively,and the areas in which the ecological environment was changing from improvement to deterioration and from deterioration to improvement accounted for 12.42%and 15.26%of the whole area,respectively.In the face of the current ecological environment and future change trends of RSEI in the Sahel region,the research results provide a reference for the construction of the"Green Great Wall"(GGW)ecological environment project in Africa. 展开更多
关键词 ecological environment remote sensing ecological index human activities climate change Sahel region "Green Great Wall"(GGW)
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Coordination of Urbanization and Water Ecological Environment in Shayinghe River Basin,China 被引量:7
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作者 ZHANG Xiang HU Hong +1 位作者 XU Jiangang YIN Haiwei 《Chinese Geographical Science》 SCIE CSCD 2011年第4期476-495,共20页
During the rapid industrialization and urbanization of China,urban agglomeration in river basin areas raises the problems of over-use of water resources and pollution of the water environment.Related research in China... During the rapid industrialization and urbanization of China,urban agglomeration in river basin areas raises the problems of over-use of water resources and pollution of the water environment.Related research in China has mainly focused on the conflicts among economic growth,urban expansion and water resource shortages within admin-istrative boundaries.However,water environments are much more dependent on their physical boundaries than their administrative boundaries.Consistent with the nature of water environment,this study aims at analyzing coordination relationships between urban development and water environment changes within physical river basin boundaries.We chose the Shayinghe River Basin,China,as our case study area which is facing serious challenges related to water en-vironment protection.Then we classified 35 county-level administrative units into upstream,midstream and down-stream regions based on their physical characteristics;analyzed the coordination degree of urban agglomeration using the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method;and constructed cooperative models using the Linear Programming (LP function) to simulate four scenarios of the coordination relationship be-tween urban population increase and water environment protection based on existing water resources and water pollu-tion data.The results show that the present coordinative situation in Shayinghe River Basin is not sustainable.In gen-eral,more than 50% administrative units are in the bad coordinative situation.In particular,the downstream region is under worse condition than the upstream and midstream regions.Cooperative models in scenario analyses indicate that the population scale set in existing urban master plannings is not coordinated with the water environment protection.To reach the goal of regional sustainable development,the total population needs to be controlled such that it will re-main at 4.5×10 7 or below by 2020 given the capacity of water environment. 展开更多
关键词 water ecological environment coordination analysis cooperative model urban agglomeration Shayinghe River Basin
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Melting and shrinkage of cryosphere in Tibet and its impact on the ecological environment 被引量:4
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作者 JianGuo ZHANG YingLi WANG YunSong JI DeZhi YAN 《Journal of Arid Land》 SCIE 2011年第4期292-299,共8页
Global warming is having a profound impact on global ecological systems,and has inevitably induced changes in the cryosphere,one of the five layers of the earth.Major changes include the shrinking and reduction in the... Global warming is having a profound impact on global ecological systems,and has inevitably induced changes in the cryosphere,one of the five layers of the earth.Major changes include the shrinking and reduction in the area and volume of both the mountain glaciers and the ice caps covering the North and South poles,and the melting of permafrost and thickening of the active frost layer.Swift changes in the cryosphere have inevitably induced ecological and environmental changes in its zone.While some of these changes are beneficial to mankind,such as an increase in water circulation,short term increases in water volumes and the enlargement of the cultivatable area,others are extremely hazardous,like the flooding of lowlands caused by an increased sea level elevation,debris flow caused by glaciers,glacier lake bursts,undermined building safety caused by permafrost melting,the deterioration of alpine cold meadows,and the surface aridization and desertification of land.Tibet,having a major part of the cryosphere in China,is home to the most widely spread glaciers and permafrost,which play a vital role in regulating water resources,climate,environment and the ecological safety in China and Asia.However,due to global warming,the glaciers and permafrost in Tibet have recently changed dramatically,exhibiting shrinkage and melting,which threatens long-term water resources,and the ecological and environmental safety of China.Based on existing research,this paper discusses the relationship between global warming and the melting and shrinkage of the cryosphere.The results show that the cryosphere's melting and shrinkage in Tibet are the direct result of global warming.The melting of glaciers has led to a series of disasters,such as changes in river runoff,the heightened frequency of debris flows induced by glaciers and the outbursts of glacier lakes.The melting of the permafrost also resulted in a series of ecological and environmental problems in Tibet,such as the degradation and population succession of the alpine grassland and meadows,the aridization of the land surface,and the occurrence of freeze-thaw erosion. 展开更多
关键词 TIBET CRYOSPHERE global warming ecological environment
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