人类活动影响下的黄河流域水资源演化规律初探

应用分布式流域水文模型WEP-L模型初步分析了人类活动影响下的黄河水资源演化规律。通过2000年现状下垫面条件下的评价结果与历史系列条件下的评价结果比较,以及考虑与不考虑人工取用水条件下的模拟结果比较,初步发现:黄河流域在强烈的人类活动影响下,水资源量及其构成均发生了显著变化,地表水资源量衰减,而不重复地下水量增加;在狭义水资源衰减的同时,伴随着有效蒸散即降水有效利用的增加,流域广义水资源量有一定幅度增加。研究成果对黄河的治理规划和水安全战略具有参考价值。

Evolutionary Laws of the Yellow River Basin's Water Resources under the Impact of Human Activities

The paper applies the dualistic distributed hydrological model (WEP-L model) to stu-dy the evolutionary laws of the Yellow River Basin's water resources under the impact of human activities.The water resources assessment results under present underlying surfaces are compared with those under historical underlying surfaces,and the water resources assessment results under no water use condition are compared with those under water use condition as well. By contrast,it is shown that the quantity and compositions of water resources changed distinctly under the impact of intensive human activities.The two main variations are as follow:(1)the surface water resources reduced but the ground water resources which is unrepeatable with the surface water resources increased;(2)the special water resources reduced but the general water resources increased accompanied with increase of the effective evaporation,namely,effective utilization of precipitation.The research achievement can be referenced for comprehensive management and the water safety strategic planning of the Yellow River Basin.