浙江省6大重点水库生态服务功能价值评估

Ecosystem service evaluation of the six important reservoirs in Zhejiang Province

以浙江省6大重点水库为研究对象,采用市场价值法、影子工程法和成果参照法等方法对水库生产与供给、娱乐文化和环境调节3大功能类别的9个子服务功能进行分析与价值评估.结果表明,浙江省6大重点水库的生态服务功能总价值为4.1132×1010元·a-1,其中直接价值为2.0228×1010元·a-1,间接价值为2.0904×1010元·a-1.各水库生态系统服务功能单位面积价值量均值为58.22元·m-2·a-1,且皎口-周公宅水库>湖山湖水库>汤浦水库>新安江水库>珊溪水库>长潭水库.本研究亦表明,水库作为一种资源是环境体系的重要组成部分,对人类社会的发展起着直接或间接的支撑作用.

Large reservoirs with various ecosystem services play an important role in the local development. This study analyzed and evaluated the service values provided by the six important reservoirs in Zhejiang Province using the marketing value method, shadow project approach and benefit transfer method. Services of the reservoirs were categorized into water supply and production, environment regulating and entertainment culture services. The eco- nomic values of the nine sub-services for the above three major categories were estimated based on the published studies and some original calculations. The total economic value of these six reservoirs reached to 4. 113 2 X 101~ yuan ~ a 1 , among which the direct value is 2. 022 8 X 101~ yuan ~ a 1 and the indirect value is 2. 090 4 × 1070 yuan a -1. The averaged ecosystem service value per unit area of the reservoirs is 58.22 yuan m-2 a-1, and that of each reservoir from high to low were ranged as followings, Jiaokou-Zhougongzhai reservoir 〉 Hushanhu reservoir Tangpu reservoir 〉 Xinanjiang reservoir 〉 Shanxi reservoir 〉 Changtan reservoir. The results also indicate that the services of reservoir ecological systems contribute to human welfare both directly and indirectly, and there- fore are an important part of the local system.