Calculation Analysis of Jiuzhaigou Forest Ecosystem Headwaters Conservation

Nowadays,the forest is the biggest and the most imprtant ecosystem in the land ecosystem.Taking assessment methods and practicality purpose into consideration,headwaters conservation through forest is defind as the amount of water held back by forest during precipitation.By determining the concept of headwaters conservation and its assessment methods,based on the amount of headwaters conservation from forest,the water conservation through forest ecosystem of Jiuzhaigou was assessed.The result shows that the benefits of water conserved through forest ecosystem within this region is about 1.60219×1012 m3 every year.Therefore it can be concluded that ecological benefits of forest ecosystem are significant in regional sustainable development.