Evaluation Of Sustainable Development Of The Eco-environment And Impact Factors Research Of Danjiangkou Reservoir In Henan Prefecture

Danjiangkou reservoir is the water source of the Middle Route Project of the South to North Water Transfer Project,and the strategic position is very prominent.This paper puts Danjiangkou reservoir(Henan prefecture)as the study area,based on the ecology,water and soil conservation,economics and other disciplines to make a quantitative assessment of the ecological environment sustainable development and ecosystem service function of soil and water conservation of comprehensive management of soil and water conservation in Danjiangkou reservoir area and upstream,and accurately analyzed the factors affecting the sustainable development of the ecological environment in the study area in 2005-2013,using the ecological footprint analysis method and cosystem services value assessment with SPSS software.The results show that the per capita ecological carrying capacity has increased 0.063343 hm2,the per capita ecological footprint has increased 1.120001 hm2 and the per capita ecological deficit has widened 1.056658 hm2 and there is a steady decrease in growth acceleration in nine years,and the reservoir area ecological is also unsustainable.The rapid increase of urban consumption level is the main cause of ecological footprint and ecological deficit per capita.After 2007,with the implementation of the "project of comprehensive management of soil and water conservation in Danjiangkou reservoir area and upstream" and other special operations,ecological protection work has achieved certain results,reversing the downward trend of ecological carrying capacity.By calculation,the study area "project of comprehensive management of Danjiangkou reservoir area" ecological service value of about 879 million 220 thousand yuan,is39.34 times the annual cost,to enhance the ecological carrying capacity of the studyarea the contribution rate was 39.80%,the ecological and economic benefits is very significant,the project has become one of the key to improve the ecological carrying capacity.In various benefits,benefits of hydrosphere especially the effect of prevention and control of water pollution is the most prominent,which is the main embodiment of ecological service value of the project.It is consistent with the construction goal of the project.