人类活动影响下新疆生态环境的一些变化

人类活动引起的新疆生态环境变化主要有以下几方面:1.河流流程缩短,河水矿化度和泥沙含量增加;2.湖泊水位下降,湖面缩小或变干,湖水矿化度升高;3.森林破坏,面积缩小;4.草场的产草量降低,牧草质量下降; 5.土壤次生盐渍化、沼泽化和肥力下降;6.土地沙漠化不断扩大。

SOME CHANGES IN THE ECOLOGICAL ENVIRONMENT CAUSED BY HUMAN ACTIVITIES IN XINJIANG

The changes in the ecological environment caused by human activities in Xinjiang are mainly as follows:1. The flowing distances of rivers have been shortening, and the mineralization and silt content of their water have been increasing.2. The water level of lakes has been descending, or they have been drying up, their water mineralization has been rising.3. Forests have been being damaged, the area has been reducing.4. Pastures have been retrograding, the herbage yield has been dropping, and the quality det...