The Present Situation and Recovery Strategy of Ecological Environments in the Dry Valleys in the Upper Reaches of the Minjiang River Area

The dry valleys in the upper reaches of the Minjiang River are located in the transition zone between the Qinghai-Tibet Plateau and the Sichuan Basin. They have complex natural environments, vulnerable ecosystem,backward economic development,and diverse social cultures. Because of adverse natural environments and human interference,their original ecological environment becomes worse and worse, and brings about a series of ecological environmental problems, for example, vegetation degradation, and loss of biodiversity. In this paper,a detailed description is given of the present situation and reasons, and some scientific measures are put forward for the recovery of their ecological environment. This study has important theoretical and practical significance on the regional vegetation restoration and the improvement of ecological environments.