A study on the threshold and the tendency in Zhangjiajie tourist and ecological environment
武陵源风景名胜区旅游生态环境演变趋势与阈值分析

Wulingyuan was a National Key Scenic Zone, It is also a National Geological Park,and a World Natural Heritage Site. With the development of Wuingyuan's tourist industry, the ecological environment quality of scenic zones began to deteriorate yearly. And this attracted the attention of the World Heritage Spot Committee of UNESCO. The main ecological environmental problems in Wulingyuan core scenic spots are: The atmospheric environment quality becomes worsens yearly .The water quality in Jinbian Stream ha...