人类活动影响下长江流域水资源演变趋势及对策

Water resources evolution trend of Yangtze River Basin under influences of human activities and countermeasures

目前,长江流域总体水资源开发利用程度较低,人类活动影响下对长江流域水资源演变趋势的研究还处于起步阶段。在分析土地利用变化、河道外取用水、废污水排放和水库调节可能对流域水资源演变趋势产生影响的基础上,详细研究了河道外取用水影响下干流主要控制站下泄水量的演变趋势和水库调节影响下主要控制站径流量年内分配过程的演变趋势。据此提出了应对人类活动影响的对策措施和开展分阶段深入研究的建议。

The study of water resources evolution trend of Yangtze River Basin under influences of human activities is still in initial stage due to the low development and utilization degree of overall water resources of Yangtze River. On the basis of analy-zing the influences of land utilization variation, water intake outside the river channel, sewage release and reservoir operation on water resources evolution trend, the variation trend of discharge volume from major control stations of the mainstream under the influence of water intake outside river channel is researched, so is the evolution trend of annual runoff distribution process of the major stations under the operation of reservoirs. The countermeasures and suggestions for further study by stages are put forward.