从生态系统退化机制入手 ,主要对河西走廊生态系统由于水资源变化引起的退化特征进行了研究 ,探讨了植物系统的逆行演替与环境退化的关系 ,提出了生态恢复的基本思路。 Starting from the mechanism of ecosystem degradation, the degradation characteristics of Hexi Corridor ecosystem caused by water resources changes were studied. The relationship between retrograde succession of plant systems and environmental degradation was discussed, and the basic idea of ​​ecological restoration was put forward.