应用生态学报2013，Vol.24Issue(1)：183-189,7.
基于InVEST模型的三江源区生态系统水源供给服务时空变化
Spatiotemporal variation of water source supply service in Three Rivers Source Area of China based on InVEST model.
摘要
Abstract
The Three Rivers Source Area is the largest ecological function region of water source supply and conservation in China. As affected by a variety of driving factors, the ecosystems in this region are seriously degraded, giving definite impacts on the water source supply service. This pa-per approached the variation patterns of precipitation and runoff coefficient from 1981 to 2010, quantitatively estimated the water source supply of the ecosystems in the region from 1980 to 2005 based on InVEST model, and analyzed the spatiotemporal variation pattern and its causes of the wa-ter source supply in different periods. In 1981-2010, the precipitation in the Three Rivers Source Area had a trend of increase after an initial decrease, while the precipitation runoff coefficient pres-ented an obvious decreasing trend, suggesting a reduced capability of runoff water source supply of this region. The potential evapotranspiration had a declining trend, but not obvious, with a rate of 0. 226 mm·a-1.In 1980-2005 , the water source supply of the region represented an overall de-creasing trend, which was most obvious in the Yellow River Source Area. The spatiotemporal varia-tion of the water source supply in the Three Rivers Source Area was the results of the combined effects of climate and land use change, and the climate factors affected the water source supply mainly through affecting the precipitation and potential evapotranspiration. Climate and land use change induced the ecosystem degradation and underlying surface change, which could be the main driving forces of the declined water source supply in the Three Rivers Source Area.关键词
生态系统服务/水源供给/InVEST模型/三江源区Key words
ecosystem service/water source supply/InVEST model/Three Rivers Source Area分类
天文与地球科学引用本文复制引用
潘韬,吴绍洪,戴尔阜,刘玉洁..基于InVEST模型的三江源区生态系统水源供给服务时空变化[J].应用生态学报,2013,24(1):183-189,7.基金项目
"十二五"国家科技支撑计划项目(2012BAC19B10)资助. （2012BAC19B10）
