西藏朋曲河流域淡水生态系统服务价值评估

A Value Assessment of Freshwater Ecosystem Services in the Pumqu River Basin,Tibet

西藏朋曲河流域分布着多种淡水生态系统类型,蕴涵着巨大的生态效益与经济效益.本文采用市场价值法、影子价格法、影子工程法和当量因子法等方法,对朋曲河流域淡水生态系统服务价值进行评估.经估算,2014年流域内淡水生态系统服务总价值为792 937.95万元.其中,调节服务价值远远高于其他服务价值,供给服务价值最小.因此,本研究建议地方政府应高度重视流域内淡水生态系统的保护与恢复,促进流域生态安全和经济社会可持续发展.

Freshwater ecosystems such as wetlands,lakes and rivers are widely distributed in the Pumqu River basin in southern Tibet.Through various services,these ecosystems have provided tremendous ecological and economic benefits.Against this backdrop,this paper estimates the monetary value of these freshwater ecosystem services via market valuation method,shadow price method,shadow engineering method and equivalent factor method.The total value of services provided by the freshwater ecosystems was estimated at 7 929 379 500 Chinese Yuan in 2014,of which regulation services contributed much more than the other services,while provisioning services made the smallest contribution.Therefore,the authors recommend that local the governments should pay more attention to the preservation and restoration of the freshwater ecosystems,and ensure ecological security and sustainable socioeconomic development in the basin.