Expert Knowledge Based Valuation Method of Ecosystem Services in China
Expert Knowledge Based Valuation Method of Ecosystem Services in China
复制标题
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
C. Cao
中科院分区：
文献类型：
--
作者：
C. Cao
Costanza（1997）提出的全球生态系统服务价值评估方法近年来引起了我国生态学研究者的重视，并被许多学者应用于森林、草地和农田生态系统的生态系统服务价值评估。在Costanza方法的基础上，对生态系统服务功能进行了评估，发现一些生态系统服务功能价值没有得到充分的重视，甚至被忽略。提出了一种新的生态系统服务价值评估方法，即基于“单位价值”的生态系统服务价值评估方法。结果表明，基于专家知识的生态系统服务价值评估方法与基于生物量的生态系统服务价值评估方法具有可比性，因此，基于专家知识的生态系统服务价值评估方法可以作为已知土地利用面积的生态系统服务价值评估方法，但要想获得科学合理的具体结果，必须考虑生态系统服务功能的空间差异。
Valuation of global ecosystem services by R Costanza(1997)has attracted attention of the Chinese ecological researchers over the years.And many Chinese scientists have been using the methods to valuate the ecosystem services for forest,grassland and farmland ecosystems.However,it has been turned out that there are several shortcomings in direct adaptation of the methods,for instance,some ecosystem services have been insufficiently valuated or even ignored via using Costanza's method.To fill this gap,we have,on the basis of Costanza's method,developed a new method or 'unit value' based method for assessment of ecosystem services.Expert interviews with structured questionnaire were contacted in 2002 and 2007 respectively,and altogether 700 Chinese ecologists were involved in the interviews for testing the method.It has been found that the values of ecosystem services from expert knowledge based unit value method and biomass based method are comparative.Therefore,expert knowledge based assessment of ecosystem services could be used as a method for assessing ecosystem services with known land use areas,and a good result could be generated within a short period of time.However,for scientifically sound and concrete results,the spatial disparity of ecosystem services should be taken into account.