%0 Journal Article
%T Valuation of Pond Aquaculture Ecosystem Services: A Case Study of Common Fish Aquaculture in Qingpu, Shanghai<br>池塘养殖生态系统服务价值评估——以上海市青浦区常规鱼类养殖为例
%A YANG Huaiyu
%A LI Sheng
%A YANG Zhengyong
%A <br>杨怀宇
%A 李晟
%A 杨正勇
%J 资源科学
%D 2011
%I 
%X Aquaculture ecosystems are extensively managed by humans to optimize the provision of food. Investigations of the value of aquaculture ecosystems have focused mainly on the value of food provision but seem to ignore the value of regulation services, supporting services, as well as cultural services of an ecosystem. For formulating policies and strategies of the payment for ecological services (PES), valuating ecosystem services of an aquaculture ecosystem is important for the public, decision-makers, as well as scientists. A research framework was constructed for the classification of ecosystem services by Millennium Ecosystem Assessment and analysis of functions of aquaculture ecosystems. Data were collected from both point observations and random sampling investigations in Jinzhe, Zujiajiao and Liantang towns of Qingpu district in Shanghai. Based on the framework, the value of aquaculture pond ecosystem services, including food provision, carbon fixation, O2 emission, temperature regulating, recreation, and existence services were calculated through the market-value method, replacement cost method, travel-cost method, and contingent valuation method. Results show that the total value of common fish aquaculture pond ecosystem services is about 475 thousand RMB/(hm2·a), in which the value of food provision, carbon fixation, O2 emission, temperature regulation, recreation, and existence service account for 7.2%, 5.8%, 0.7%, 38.39%, 43.17%, and 5.17%, respectively. The value of non-market services of aquaculture pond is greater than the market value of fish produced in the pond. It is concluded that 1) the contribution of aquaculture to society and economy is underestimated in terms of the ecosystem service of aquaculture, and aquaculture economy has been gradually transformed from the tradition product economy to the service economy; 2) through analysis of valuation methods and their limitations, the adopted method was proved appropriate in the valuation of aquaculture ecosystem services, though the value of the recreation service may be overestimated, and 3) there are still lots of controversies and challenges that have emerged from current research on ecosystem services, involving 1) an intensive study has to be discarded because of disaccord paradigm of ecosystem services, which causes varying understanding of the term of value between economists and ecologists; 2) ecosystem services and their valuation methods cannot correspond exactly, and much emphasis needs to be placed on improvement in the normalization of valuation methods, and 3) research on ecosystem services of agriculture including aquaculture should assess human impacts due to a self-artificial ecosystem.
%K Pond aquaculture
%K Ecosystem services
%K Valuation
%K Shanghai<br>池塘养殖
%K 生态系统服务
%K 价值评估
%K 上海
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=9DEEAF23637E6E9539AD99BE6ABAB2B3&aid=D34D5BFD503155AE9471741A0ABA56B6&yid=9377ED8094509821&vid=27746BCEEE58E9DC&iid=38B194292C032A66&sid=E406B4E9A1BA9D8C&eid=93ADA2AA3F969E58&journal_id=1007-7588&journal_name=资源科学&referenced_num=0&reference_num=28