The research indicaes that the degeneration of ecological environment results from natural fac tors and irrational man - made activities as well, and puts forward the rational way of improvement and reconstruction adapt ing this area.

• 研究结果表明，生态环境的退化是自然因素和不合理的人为活动影响的结果，根据生态环境现状与成因提出了适应本区生态环境治理与重建的对策。