本文综合分析了江源区湖泊、沼泽、土地沙化、冻土发育等因素，指出长江河源区的环境正在趋向干旱，而这不是受人类重大干扰发生的，证明全球正在变暖。

The source region of the Changjiang River is in the centre of Qinghai-Xizhang Plateau. There a spacial nature environment: its average high for sea level is 4500-5000m, the average temperature is -4～-8℃ in the source region. So it is one of coldest and highest, biggest permafrost zone of middle-low laitie, and also a highest and biggest plateau wetland and peat and in the world. At same time, the interior and exterior river alternate region is the region, the both of half-arid zone the half-moist zone transform is in here too. The activity of human is a little to interfere the environment. Therfore it is a optional region to research the change of nature environmnet.

In the region, the environment is recently changing to arid, the glacial is retrograding, the lake is retrograding too, the wetland are is reducing, and the drift sand is activiting. These synthesizes factors explained that the nature environment of the some regions of Changjiang River is very evidently, and the changes are not from human activity but resoults from the general circulation.