Service Value of Water Ecosystem in Liangzi Lake Basin:Evaluation Based on InVEST Model
The accounting of ecosystem service value in a specific watershed is of great significance for improving the modernized watershed governance system and management capacity.In this study,based on the open and micro survey data of governments at different levels in 2022,the value of water ecosystem services in Liangzi Lake Basin was systematically evalu-ated.Liangzi Lake Basin covers four administrative regions of Hubei Province,and the InVEST model was used to sys-tematically evaluate the values of water supply,soil conservation,aquatic product production,leisure and recreation,water purification,species conservation,flood regulation and storage,and carbon sequestration in the study area.Consequently,the study showed in 2022,the total value of water ecosystem services was estimated to be 42.011 billion yuan,the direct use val-ue involving water source supply,aquatic product production,and leisure and entertainment was 27.863 billion yuan,while the indirect use value involving soil conservation,species conservation,and flood regulation and storage was 14.148 billion yuan.For the above service functions their values could be arranged in order of decreasing magnitude as water supply(16.801 billion yuan)＞carbon sequestration value(13.2 billion yuan)＞aquatic product production(9.842 billion yuan)＞leisure and recreation(1.22 billion yuan)＞species conservation(510 million yuan)＞flood regulation and storage(277 million yuan)＞water purification(123 million yuan)＞soil conservation(38 million yuan),and the structure of water ecosystem services was out of balance,as the leisure and entertainment value only accounted for 4.3％of the direct use value,it appeared that there was a obvious shortcoming in the development of water ecotourism.
water ecosystemsvalue appraisalLiangzi Lake Basinrealizing the value of ecological products
万方数据
维普
