The paper analyzes the worsening of ecological environment characteristics in west China, and considers that ecological reconstruction is of great economic and social significance. 摘要西部生態(tài)環(huán)境惡化的現實(shí)和歷史背景,決定了生態(tài)環(huán)境重建在西部大開(kāi)發(fā)中具有重大意義。