Evaluation On The Ecosystem Services Values Of Urban Lake Wetlands In Chongqing Main City Zone

Urban lake wetland ecosystem is unique natural resources of ecological system, dueto the geographical position in the particularity and which is its special function, andplays a very important role to the city’s development. Scientific evaluation of urban lakewetland ecological service value, not only for the establishment of regional ecologicalaccount provided the basis of data, but also on the make rational regional ecologicalprotection and economic development decision, protect and restore wetland ecosystemurban lakes has important significance.With economic growth, Chongqing urban lake wetland shows negative influence, suchas lake area development shriveled, water pollution and the lack of a rich, landscapefeatures, etc. In recent years, the Chongqing municipal government want to improveurban lake wetland water quality and ecological environment, so taking the "s" shapecut pollution, ecological restoration and so many kinds of governance and protectingcity lake wetland means, but face numerous lakes management, which still has someblindness.This study on Chongqing typical urban lake wetland as the research object, theselection of the Caiyun lake，Shuanglong lake and Xiaomu lake,three lakes typicalcases for evaluation analysis. In the urban lake wetland ecological service function ofthe content and value evaluation, the theory and methods of constructing urban lakewetland ecological service function of the value evaluation index system, and on thebasis of application city ecology, environment economics, ecological economics theoryand method, the different human interference degree, urban lake wetland direct usevalue, indirect use value and the nonuse value, the difference of the value of theecological service function.The results were as follows: Chongqing urban lake wetland resources each functionvalue is rich, direct use value value size and human disturbance levels, indirect usevalue value the size and the urban lake wetland of the existence and the area size.Rather than use value plays an important role. Direct use value for Shuanglong lake is bigger than Caiyun lake,ande the Xiaomu lake is least, unit area directly use value forShuanglong lake is bigger than Caiyun and Xiaomu lake, just because of the lake area,processing agricultural products value and human interference effects; Indirect usevalue for Caiyun lake is bigger than Xiaomu and Shuanglong lake, the unit area ofindirect use value for Caiyun lake is bigger than Xiaomu and Shuanglong lake. Ratherthan nonuse value subjectivity is stronger, and lakes geographical location, ecologicalenvironment and other factors, such as the visitors, including the nonuse value of theimportance of the three components for existence value degree is more important thanheritage value,and choose value. Respondents degree, profession, etc and pay thevalue of the payment will have a significant influence, and gender, age on willingness topay rate and pay value the impact is not big.Comprehensive analysis3cities the lake’s ecosystem service function value, getShuanglong lake is bigger than Caiyun and Xiaomu lake. Among them directly usevalue of the proportion of the total value for Caiyun bigger than Xiaomu andShuanglong lake Indirect use value of the proportion of the total value for Caiyunbigger than Shuanglong and Xiaomu lake; The nonuse value of the proportion of thetotal value for Xiaomu lake bigger than Caiyun and Shuanglong lake. Overall a lake isbigger, so the bigger the proportion of its nonuse value, the bigger the direct use valueand indirect use value the greater proportion, rather than nonuse value the lessproportion.Typical cities lake wetland of unit area of the ecological service function value is onethousand five hundred and thirty three point twenty two yuan per square meter everyyear, thus Chongqing urban lake wetland ecosystem service function value for twentynine billion and two hundred twenty three million yuan every year, including direct usevalue, indirect use value, the nonuse value were one billion and one hundred ninetythree million yuan every year, two hundred and eighty seven million yuan every year,twenty seven billion and seven hundred forty four million yuan every year. This showsthat the city lake wetland has strong ecological service value, so for human use, makingsure to do a comprehensive, reasonable and scientific and sustainable, can make thehuman and the nature harmonious development.