水电工程对农业生态系统服务功能价值评估——以汉江崔家营航电枢纽工程为例

Effect of Hydropower Engineering Project on Agricultral Ecosystem-A Case Study of Cuijiaying Hydropower Project

利用遥感技术测算汉江崔家营航电枢纽工程淹没区各种农业植被的面积。以此为基础数据,采用市场价值、碳税法和替代工程等方法,对工程修建前的农业生态系统服务功能的价值进行评价。结果显示:淹没区内农业生态系统服务功能每年要产生农产品服务价值2242.38万元,大气组分调节价值556.31万元,减少土地损失的价值278.8万元,减少土壤肥力损失的价值3711.71万元,涵养水分的价值101.37万元。工程建成后,淹没区内的农业生态系统服务功能将消失,因此,工程的修建使农业生态系统服务功能的价值减少6890.57万元。

Remote Sensing was used to estimate agricultural vegetation aera flooded by Cuijiaying hydropower project at Hanjiang River.Based on which several methods were taken to assess the values of agricultural ecosystem before and after the construction of the project.