To solve the contradiction between supply and demand of land, the con- struction of land resource security guarantee system is an important part to coordi- nate the economic development and cultivated land protection ...To solve the contradiction between supply and demand of land, the con- struction of land resource security guarantee system is an important part to coordi- nate the economic development and cultivated land protection in the core grain pro- duction region. Based on the deep analysis on the land resources characteristics and problems using the combined method of literature review method with qualita- tive and quantitative analysis, we constructed the land resource security system for different categories according to the land use principles of optimization, intensivism, improvement, and overall planning, and proposed the corresponding supporting mea- sures. The results showed that controlling the new increase, promoting the reclama- tion and improvement of land are the basis for land resource security, clearing the idle, improving the utilization rate of stock are the core of the efficient use of land resources, and establishing a unified urban and rural construction land market is the key to promoting the economical and intensive utilization of land resources, provid- ing scientific basis for the sustainable utilization of land resources in the core grain production regions.展开更多
[Objective] This study aimed to understand and grasp the soil heavy metal pollution status of agricultural habitat environment in Xi＇an City. [Method] The soil heavy metal pollution status of pollution-free agricultu...[Objective] This study aimed to understand and grasp the soil heavy metal pollution status of agricultural habitat environment in Xi＇an City. [Method] The soil heavy metal pollution status of pollution-free agricultural products-producing areas in 9 counties （districts） of Xi＇an City was investigated. A total of 609 soil samples were collected, and their Cd, Hg, As, Pb and Cr contents were determined. In addition, the heavy metal pollution status of the collected soil samples was evaluated by Nemerow index method. [Result] The pollution in Baqiao, Chang＇an; Gaoling, Lan- tian, Lintong and Yanliang was of grade I, belonging to clean level; the pollution in Hu County, Weiyang and Zhouzhi was of grade II, near the warning line, belong to relatively clean level. There was no large-area soil heavy metal pollution overall. The investigated areas could be used as production bases of pollution-free agricultural products and even high-quality agricultural products. However, the heavy met- als contents in some individual areas exceeded relevant soil environmental quality standards, and they should be avoided or forbidden during regional planning and selection of production area. [Conclusion] Soil heavy metal pollution of agricultural habitat environment in Xi＇an City is generally at good status. Targeting at the future development plan of Xi＇an City, feasible and scientific suggestions are put forward.展开更多
The establishment of agricultural products quality and safety cooperation mechanism and the research demonstration center in the Asia-Pacific reg coordinating each other, is not only of great ening cooperation with co...The establishment of agricultural products quality and safety cooperation mechanism and the research demonstration center in the Asia-Pacific reg coordinating each other, is not only of great ening cooperation with countries in Asia-Pacific region and for agricultural production safety of those countries in Asia- Pacific region, but also very necessary for our country to build a responsible image in the quality and safety of agricultural products, protection of the benefit of agriculture-related enterprises, increasing exports, ensuring imported food safety and China＇s national food security, as Well as nice exploration of establishing the global agricultural＇ products quality and safety cooperation center.展开更多
There are many problems in terms of safe coal production and the sound developmentof the coal industry.Accompanying the intensification and increasing efficiencyof coal production and the conducting of mining operatio...There are many problems in terms of safe coal production and the sound developmentof the coal industry.Accompanying the intensification and increasing efficiencyof coal production and the conducting of mining operations at deeper and more remoteareas of mines,the efficient recovery and utilization of Coal Mine Methane:(CMM) is animportant issue in improving and stabilizing the productivity in the coal mining industry withhigh levels of gas,where the incidence of gas outbursts is increasing.We plan to studyvarious aspects of the development of production technology and characteristics of themine site.This is to establish the technology for highly efficient coproduction coal and gasoperation rate.As a result,the productivity at the coal mine face will increase due to thereduction in gas emissions in the mining face.Effective use of recovered gas can be expectedto reduce global warming by reducing the amount of coal mine methane gas emissionin the air.展开更多
Coal roadway support is the foundation and strong guarantee of safe coal production. With the FLAC3D numerical simulation, the roadway fulllength anchor support mechanism was studied, and the full-length anchor forcet...Coal roadway support is the foundation and strong guarantee of safe coal production. With the FLAC3D numerical simulation, the roadway fulllength anchor support mechanism was studied, and the full-length anchor forcetransferring mechanism and stressfield distribution formed by roadway surrounding rocks were analyzed, which will provide a scientific basis for a support technology in large-section roadways under complicated geological conditions and lay a foundation for the popularization and application of a full-length anchor support system under special geological conditions.展开更多
This article is a part of a descriptive survey which aims to characterize, classify, and compare the household production in the Municipality of Itapuranga, State of Goias, Brazil, considering the access to the Nation...This article is a part of a descriptive survey which aims to characterize, classify, and compare the household production in the Municipality of Itapuranga, State of Goias, Brazil, considering the access to the National Program for Strengthening Family Agriculture （PRONAF） and its respective differentiation between beneficiary and non-beneficiary groups by the program. It applied the technique of group comparison analysis and frequency inquiry, taking into consideration several variables. Information about the origin, distribution and total income, food safety, land property, production diversification, expenditures and participation in social organizations were collected. The sample consisted of 70 producers, the calculation sample was defined by determined value at the confidence level of 90% whereas the sampling error of 7%. The results allowed describing, classifying, characterizing, and comparing the socio-economic and productive profile of farmers from that area and their access to PRONAF.展开更多
Based on the experience of emergency operation on earthquake and flooding in local and foreign countries, the secondary disasters of fire, damage of critical infrastructure usually harmed lives or disturbed living con...Based on the experience of emergency operation on earthquake and flooding in local and foreign countries, the secondary disasters of fire, damage of critical infrastructure usually harmed lives or disturbed living condition. In order to safeguard people＇s lives and property safety, Taoyuan City Government, except for elementary public facilities, added standardized disaster prevention parks and detention ponds in the zone-expropriation project at Chunglu area. The zone-expropriation project at Chunglu, Taoyuan is designed for 487,600 residents in 2021. The area of public facilities of park, school, road and green land is 50.7 ha, 41.88% of total development area of 122.06 ha, in which, the capacity of disaster prevention parks at Chunglu area is designed for 3,164 refugee in 7.54 ha. An underground storage construction, withstand 7-magnitude earthquake, could supply the amount of water consumption of 3 L daily per person, lasting at least four weeks. The capacity of two detention ponds is 87,800 m3. During normal times, the disaster prevention park and detention ponds can be used as a recreational space for residents. When a disaster occurs, shelters are set up in the parks to accommodate residents to protect lives and property. And, detention ponds could adjust outflow discharge into neighborhood drainage system to mitigate disaster happening. Because the construction of standardized disaster prevention park with climate change needs much more land area, the acquisition of private land area is very difficult either general acquisition or zone expropriation in urban area. During each stage of zone expropriation, the support of landlord and Mayor Wu is very important. By means of public participation, information meeting was held hundreds times and revised content according to landlord＇s positive opinion. Moreover, the design idea and content was discussed with consultant-company mutually from time to time. Fortunately, this project is finished successfully and got award from Public Construction Council of Taiwan in 2014.展开更多
Though Ghana＇s crop yield growth rate was at 17%, 5% of every 1.2 million Ghanaians have insufficient and limited access to nutritious food. Climate change and climate variability have enormously affected the state o...Though Ghana＇s crop yield growth rate was at 17%, 5% of every 1.2 million Ghanaians have insufficient and limited access to nutritious food. Climate change and climate variability have enormously affected the state of agricultural productivity and hence could result in food insecurity. As many ongoing projects use Boolean suitability analysis, land use planning, management recommendations sores, it still remains inadequate to support rural resource poor farmers. This then, is affecting livelihood and agricultural productivity. In this paper, a geostatistical quantitative method to support a geographic information system （GIS） based on multi-criteria decision support system （GMCDSS） for an enhanced land suitability assessment （LSA） and landuse planning （LP） was devised. Project findings indicated that, recommended farm inputs could be estimated and applied accordingly at farm plot levels Soil amendment indicators （e.g., 1.0 t/ha lime ＋ 1.0 t/ha gypsum was estimated for liming） was quantified and currently, farmers can save money in soil fertility management. It has shown that, instead of applying 5.0 t/ha poultry manure （PM） or five bags of N-P-K fertilizer （rate of 15： 15： 15 N-P2O5-K2O/ha） ＋ two bags of sulphate of ammonia （SA）, a farmer may apply 2.0 t/ha PM ＋ two bags 15：15：15 N-P2O5-K2O/ha ＋ one bag of SA. GMCDSS assessment has proved to be fundamental in： （1） urban planning; （2） ensuring food security; （3） poverty reduction and interventions to the effects of climate change and climate variability.展开更多
文摘To solve the contradiction between supply and demand of land, the con- struction of land resource security guarantee system is an important part to coordi- nate the economic development and cultivated land protection in the core grain pro- duction region. Based on the deep analysis on the land resources characteristics and problems using the combined method of literature review method with qualita- tive and quantitative analysis, we constructed the land resource security system for different categories according to the land use principles of optimization, intensivism, improvement, and overall planning, and proposed the corresponding supporting mea- sures. The results showed that controlling the new increase, promoting the reclama- tion and improvement of land are the basis for land resource security, clearing the idle, improving the utilization rate of stock are the core of the efficient use of land resources, and establishing a unified urban and rural construction land market is the key to promoting the economical and intensive utilization of land resources, provid- ing scientific basis for the sustainable utilization of land resources in the core grain production regions.
文摘[Objective] This study aimed to understand and grasp the soil heavy metal pollution status of agricultural habitat environment in Xi＇an City. [Method] The soil heavy metal pollution status of pollution-free agricultural products-producing areas in 9 counties （districts） of Xi＇an City was investigated. A total of 609 soil samples were collected, and their Cd, Hg, As, Pb and Cr contents were determined. In addition, the heavy metal pollution status of the collected soil samples was evaluated by Nemerow index method. [Result] The pollution in Baqiao, Chang＇an; Gaoling, Lan- tian, Lintong and Yanliang was of grade I, belonging to clean level; the pollution in Hu County, Weiyang and Zhouzhi was of grade II, near the warning line, belong to relatively clean level. There was no large-area soil heavy metal pollution overall. The investigated areas could be used as production bases of pollution-free agricultural products and even high-quality agricultural products. However, the heavy met- als contents in some individual areas exceeded relevant soil environmental quality standards, and they should be avoided or forbidden during regional planning and selection of production area. [Conclusion] Soil heavy metal pollution of agricultural habitat environment in Xi＇an City is generally at good status. Targeting at the future development plan of Xi＇an City, feasible and scientific suggestions are put forward.
文摘The establishment of agricultural products quality and safety cooperation mechanism and the research demonstration center in the Asia-Pacific reg coordinating each other, is not only of great ening cooperation with countries in Asia-Pacific region and for agricultural production safety of those countries in Asia- Pacific region, but also very necessary for our country to build a responsible image in the quality and safety of agricultural products, protection of the benefit of agriculture-related enterprises, increasing exports, ensuring imported food safety and China＇s national food security, as Well as nice exploration of establishing the global agricultural＇ products quality and safety cooperation center.
文摘There are many problems in terms of safe coal production and the sound developmentof the coal industry.Accompanying the intensification and increasing efficiencyof coal production and the conducting of mining operations at deeper and more remoteareas of mines,the efficient recovery and utilization of Coal Mine Methane:(CMM) is animportant issue in improving and stabilizing the productivity in the coal mining industry withhigh levels of gas,where the incidence of gas outbursts is increasing.We plan to studyvarious aspects of the development of production technology and characteristics of themine site.This is to establish the technology for highly efficient coproduction coal and gasoperation rate.As a result,the productivity at the coal mine face will increase due to thereduction in gas emissions in the mining face.Effective use of recovered gas can be expectedto reduce global warming by reducing the amount of coal mine methane gas emissionin the air.
基金Supported bythe National Natural Science Foundation of China （50904024） the State Key Laboratory Research Fund of Coal Resources and Mine Safety of China University of Mining ＆ Technology （10KF02） the Doctoral Fund of Henan Polytechnic University （B2009-66）
文摘Coal roadway support is the foundation and strong guarantee of safe coal production. With the FLAC3D numerical simulation, the roadway fulllength anchor support mechanism was studied, and the full-length anchor forcetransferring mechanism and stressfield distribution formed by roadway surrounding rocks were analyzed, which will provide a scientific basis for a support technology in large-section roadways under complicated geological conditions and lay a foundation for the popularization and application of a full-length anchor support system under special geological conditions.
文摘This article is a part of a descriptive survey which aims to characterize, classify, and compare the household production in the Municipality of Itapuranga, State of Goias, Brazil, considering the access to the National Program for Strengthening Family Agriculture （PRONAF） and its respective differentiation between beneficiary and non-beneficiary groups by the program. It applied the technique of group comparison analysis and frequency inquiry, taking into consideration several variables. Information about the origin, distribution and total income, food safety, land property, production diversification, expenditures and participation in social organizations were collected. The sample consisted of 70 producers, the calculation sample was defined by determined value at the confidence level of 90% whereas the sampling error of 7%. The results allowed describing, classifying, characterizing, and comparing the socio-economic and productive profile of farmers from that area and their access to PRONAF.
文摘Based on the experience of emergency operation on earthquake and flooding in local and foreign countries, the secondary disasters of fire, damage of critical infrastructure usually harmed lives or disturbed living condition. In order to safeguard people＇s lives and property safety, Taoyuan City Government, except for elementary public facilities, added standardized disaster prevention parks and detention ponds in the zone-expropriation project at Chunglu area. The zone-expropriation project at Chunglu, Taoyuan is designed for 487,600 residents in 2021. The area of public facilities of park, school, road and green land is 50.7 ha, 41.88% of total development area of 122.06 ha, in which, the capacity of disaster prevention parks at Chunglu area is designed for 3,164 refugee in 7.54 ha. An underground storage construction, withstand 7-magnitude earthquake, could supply the amount of water consumption of 3 L daily per person, lasting at least four weeks. The capacity of two detention ponds is 87,800 m3. During normal times, the disaster prevention park and detention ponds can be used as a recreational space for residents. When a disaster occurs, shelters are set up in the parks to accommodate residents to protect lives and property. And, detention ponds could adjust outflow discharge into neighborhood drainage system to mitigate disaster happening. Because the construction of standardized disaster prevention park with climate change needs much more land area, the acquisition of private land area is very difficult either general acquisition or zone expropriation in urban area. During each stage of zone expropriation, the support of landlord and Mayor Wu is very important. By means of public participation, information meeting was held hundreds times and revised content according to landlord＇s positive opinion. Moreover, the design idea and content was discussed with consultant-company mutually from time to time. Fortunately, this project is finished successfully and got award from Public Construction Council of Taiwan in 2014.
文摘Though Ghana＇s crop yield growth rate was at 17%, 5% of every 1.2 million Ghanaians have insufficient and limited access to nutritious food. Climate change and climate variability have enormously affected the state of agricultural productivity and hence could result in food insecurity. As many ongoing projects use Boolean suitability analysis, land use planning, management recommendations sores, it still remains inadequate to support rural resource poor farmers. This then, is affecting livelihood and agricultural productivity. In this paper, a geostatistical quantitative method to support a geographic information system （GIS） based on multi-criteria decision support system （GMCDSS） for an enhanced land suitability assessment （LSA） and landuse planning （LP） was devised. Project findings indicated that, recommended farm inputs could be estimated and applied accordingly at farm plot levels Soil amendment indicators （e.g., 1.0 t/ha lime ＋ 1.0 t/ha gypsum was estimated for liming） was quantified and currently, farmers can save money in soil fertility management. It has shown that, instead of applying 5.0 t/ha poultry manure （PM） or five bags of N-P-K fertilizer （rate of 15： 15： 15 N-P2O5-K2O/ha） ＋ two bags of sulphate of ammonia （SA）, a farmer may apply 2.0 t/ha PM ＋ two bags 15：15：15 N-P2O5-K2O/ha ＋ one bag of SA. GMCDSS assessment has proved to be fundamental in： （1） urban planning; （2） ensuring food security; （3） poverty reduction and interventions to the effects of climate change and climate variability.
