随着市场经济的深入发展，环境资源有限性与人类需求无限性的矛盾日益明显地影响着经济的持续、稳定发展，更影响了人类的正常生活。1998年的特大洪水和2000年的沙尘暴，更使我国人民充分意识到生态环境是人类生存和发展的最根本的基础。过去由于条件所限，我国一直没有发展生 With the deepening of the market economy, the contradiction between the limited environmental resources and the infinite human needs has increasingly and obviously affected the sustained and steady economic development and even affected the normal life of mankind. The extraordinary floods of 1998 and the sandstorms of 2000 also make our people fully aware that the ecological environment is the most fundamental basis for the survival and development of mankind. In the past, due to the limited conditions, our country has not had any development in life