Ecosystem Services Evaluation Of Danjiangkoureservoir Area In Henan

As the basis for life on earth,the ecological system provide us different services.These services not only include many products and services which is closely related with the production of human life,such as food,timber,animal husbandry and fishery breeding,and so on;but also plays an important role in regulating the atmosphere,water and soil conservation,ecological tourism and so on.The evaluation of the service functions provided by the ecosystem,not only helps people to understand the ecological environment which they exist on further,but also provide s the basis for the management of the utilization areas of ecosystems.The south to North Water Transfer Project is the largest inter basin water transfer project in the world,alleviating the shortage of water resources effectively in North China,and providing water resources guarantee for the sustainable development of regional economy.Danjiangkou reservoir is the water source of the project.Xichuan County and Xixia county of Henan province are the water conservation areas of Danjiangkou reservoir.Assessing the value of ecosystem services on the Danjiangkou reservoir water source area of Henan about the ecological system of water source area,understanding and building service value for the management and use of natural ecological system,as to provide a scientific basis for decision support to maximize the source region and safeguard the rights and interests of ecological compensation.Research takes Danjiangkou reservoir water source area of Henan(Xixia county and Xichuan county)as the research object,on the basis of related literature at home and abroad,according to the theory and method of ecosystem service value assessment,determine the evaluation index,screening of land use data,meteorological data and related statistical data,using the market price method,opportunity cost method,shadow project method and travel cost method,on the basis of ecological system of water source area of scientific classification,quantitative assessment of the ecological system of water source area of the 2015 food and raw materials to provide water resources function,function,atmosphere regulation function,function of water conservation,soil conservation function and tourism function,and analysis of various types of ecosystem research the service function value,conclusions are as follows:1.The value of ecosystem service function in 2015 about the water source area of Henan province(Xixia county and Xichuan county)is 123 billion 800 million yuan,it's about 3 times of the GDP of Xixia county and Xichuan County in 2015,the ecological value of ecosystem in this region by the accumulation is not only to protect the local production and living and social economic development of Henan Province,Hebei province and Beijing of Tianjin the region's water resources support plays an important role.2.The size of different ecosystems of water source area(Xixia county and Xichuan county)in 2015,followed by forest ecosystem,water ecosystem,farmland ecosystem,grassland ecosystem,bare land ecosystem,towns ecosystem.Among them,the area of forest ecosystem is about 59%,the farmland ecosystem area about 17%,aquatic ecosystem area accounted for about 8% of the grassland ecosystem area accounted for about 7% of land area accounts for about 5% of the ecosystem,urban ecosystem area accounted for about 4%.3.Assessment the ecosystem service value of the water source area of Henan province(Xixia county and Xichuan county),service value is about 77 billion 500 million yuan,accounting for the total value of ecosystem water district 63%;regulation service value is 43 billion 300 million yuan,accounting for the total value of ecosystem water district 35%;support service value of 130 million yuan,accounting for 0.1% of the total the value of the ecosystem water source area;the cultural service value of 2 billion 900 million yuan,accounting for 1.9% of the total value of ecosystem water source area.Among them,the product service value of 10 billion 900 million yuan,accounting for the total value of ecosystem water district 8.8%;water supply value of 66 billion 600 million yuan,accounting for the total value of ecosystem water district 54%;air conditioning service value of 6 billion 900 million yuan,accounting for the total value of ecosystem water district 5.6%;water conservation service value of 36 billion 400 million yuan,accounting for the total value of ecosystem water district 29%;soil conservation service value is 130 million yuan,accounting for 0.1% of the total value of ecosystem water district;cultural service value of 2 billion 900 million yuan,accounting for 2.4% of the total value of ecosystem water source area;water supply and water conservation function in the largest proportion of ecosystem services,accounted for 83%,this is consistent w ith the ecological development and ecological status of the region,its excellent ecological environment to ensure maximum engineering benefit diversion play.4.The value of water ecosystem service per unit area of the ecological system in the highest unit area value is 136 million 650 thousand yuan /km~2;followed by the forest ecosystem,the unit area value is 11 million 770 thousand yuan /km~2;grassland ecosystem,unit area value is 7 million 380 thousand yuan /km~2;farmland ecosystem,unit area value is 6 million 460 thousand yuan /km~2.The water supply function of aquatic ecosystem is more prominent,water conservation function of forest ecosystem is more prominent,the farmland ecosystem of food and raw materials supply function is more outstanding,the grassland ecological system of food and raw materials to provide more prominent function.