【摘要】 通过对长江源区生态环境的科学考察和研究，摸清了生态环境的基本状况。长江源区现有退化草地2．47×104km2，水土流失面积已达10.63×104km2。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。更多还原

【Abstract】 By means of scientific investigtion and research on the eccological environment in the souree area of Changjiang river, the authors find out its background. In the area, there are 2. 47 × 104km2 degnerating grassland and 10. 63 ×104km2 soil erosion region. 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.更多还原