水资源量可再生性的量化方法研究

QUANTITATIVE ANALYSIS OF WATER QUANTITY RENEWABILITY

水资源量可再生性研究将为水资源可持续利用提供如何确定控制阈值的科学依据。目前 ,水资源可再生性的量化研究刚刚开始 ,现有的一些方法还都比较简单 ,不利于从水文循环更深层次上揭示水资源量可再生性。该文从单元水体的水文循环过程入手 ,基于水量平衡关系 ,提出单元水体水资源量可再生性指数及计算公式。最后 ,结合分布式水文模型 ,将所提出的量化指数应用于马连河流域 。

To identity water quantity renewability is vital to management of sustainable water utilization. However, the concept of water quantity renewability and its quantitative methodologies have not been well answered by far. Though there are some researches have involved in those questions and have addressed some viewpoints and quantifying methods about water quantity renewability, those methods are relatively simple and cannot describe the nature of water quantity renewability. Therefore, in this paper a new method to quantify water quantity renewability is put forward based on hydrological processes and the tank model. Theoretical analysis shows that this method can give good expression to water quantity renewability. Furthermore, the method is applied to the Malianhe basin in western China as case study, from which research results indicate that the method can be used to analyze the spatio temporal change law of water quantity renewability in the hydrological cycle.