[ Objective] The study aimed to assess the impact of farmland improvement on ecological environment along coastal areas of Jiangsu Province. [ Method] Taking the coastal farmland improvement of Sheyang County, Jiangsu...[ Objective] The study aimed to assess the impact of farmland improvement on ecological environment along coastal areas of Jiangsu Province. [ Method] Taking the coastal farmland improvement of Sheyang County, Jiangsu Province as an example, an indicator system of environ- mental impact assessment （EIA） for coastal farmland improvement was established based on data collection, field survey and monitoring results, expert consultation, literature study and other methods, including four subsystems （biological resource, soil, vegetation and water environment） and 12 indicators. [ Result] The weights of soil, biological resource, vegetation and water environment were 0.614, 0.219, 0.118 and 0.049, and the top weight of soil showed that farmland improvement had a great influence on soil. Among the 12 indicators, the most important indicators with higher weights were reclamation rate of the land （weight 0.389）, population density （weight 0.164） and the content of soil organic matter （weight 0.088）. Therefore, in EIA of such kind of projects in the future, we should give prominence to the identification, evaluation and monitoring of the main characteristic factor above. [ Conclusion] The research could provide scientific references for the sustainable utilization of resources and estab- lishment of environmental management policies along costal areas of Jiangsu Province.展开更多
Power generation using straw biomass has quantifiable benefits from an economic,ecological,and sociological perspective in China.The methods used to construct the assessment models of these integrated benefits were th...Power generation using straw biomass has quantifiable benefits from an economic,ecological,and sociological perspective in China.The methods used to construct the assessment models of these integrated benefits were the revenue capitalization approach and the discounted-cash-flow approach.The results indicated that a straw power plant with the capacity of 2.50×10^(7)W and burning 1.23×10^(5)tons of cotton straw could annually supply 1.40×10^(8)kWh of power.However,it would not be until six years later that these results could be measured.Over the long term,the gross benefits could reach up to 4.63×10^(8)Yuan.Therefore,the total benefits are expected to be 1.18×10^(12)Yuan if all available straw resources are used to generate power.The policy implication showed that the long-term integrated benefits of power generation by straw biomass outweighed the short-term benefits.This is the main incentive to use straw biomass for power generation in the future.展开更多
基金Supported by Scientific Research Project of Public Welfare Industry about National Environmental Protection (200709051)
文摘[ Objective] The study aimed to assess the impact of farmland improvement on ecological environment along coastal areas of Jiangsu Province. [ Method] Taking the coastal farmland improvement of Sheyang County, Jiangsu Province as an example, an indicator system of environ- mental impact assessment （EIA） for coastal farmland improvement was established based on data collection, field survey and monitoring results, expert consultation, literature study and other methods, including four subsystems （biological resource, soil, vegetation and water environment） and 12 indicators. [ Result] The weights of soil, biological resource, vegetation and water environment were 0.614, 0.219, 0.118 and 0.049, and the top weight of soil showed that farmland improvement had a great influence on soil. Among the 12 indicators, the most important indicators with higher weights were reclamation rate of the land （weight 0.389）, population density （weight 0.164） and the content of soil organic matter （weight 0.088）. Therefore, in EIA of such kind of projects in the future, we should give prominence to the identification, evaluation and monitoring of the main characteristic factor above. [ Conclusion] The research could provide scientific references for the sustainable utilization of resources and estab- lishment of environmental management policies along costal areas of Jiangsu Province.
基金the Post-Graduates′Scientific Research Innovation Projects in Jiangsu Province (No.CX08_052R)the National Outstanding Youth Foundation of NSF ofChina (No.70425002)the National Natural science foundation of China (No.70773058).
文摘Power generation using straw biomass has quantifiable benefits from an economic,ecological,and sociological perspective in China.The methods used to construct the assessment models of these integrated benefits were the revenue capitalization approach and the discounted-cash-flow approach.The results indicated that a straw power plant with the capacity of 2.50×10^(7)W and burning 1.23×10^(5)tons of cotton straw could annually supply 1.40×10^(8)kWh of power.However,it would not be until six years later that these results could be measured.Over the long term,the gross benefits could reach up to 4.63×10^(8)Yuan.Therefore,the total benefits are expected to be 1.18×10^(12)Yuan if all available straw resources are used to generate power.The policy implication showed that the long-term integrated benefits of power generation by straw biomass outweighed the short-term benefits.This is the main incentive to use straw biomass for power generation in the future.
