长江流域地下水资源量分布及特征分析

按照地下水资源调查评价方法的基本原理,根据地形、地貌、水文地质条件并结合水资源流域(水系)分区,将长江流域划分640个地下水均衡计算区,对1980～2000年为代表的近期下垫面条件下的多年平均年地下水资源量进行评价.在各均衡计算区地下水资源量评价成果的基础上,确定各水资源分区的地下水资源量.对长江流域地下水资源量分布及特征作了较全面分析,为促进长江流域水生态良性循环,合理开发利用地下水资源量提供了详实的基础分析资料.

Distribution and characteristics of underground water resources quantity in the Yangtze River Basin

According to basic principle of water resources investigation and evaluation method and landforms,hydrological and geological condition,and in the combination of basin division(river system) of water resources,the Yangtze River Basin is divided into 640 underground water balance areas,the annual average ground water quantity is calculated under representative underlying condition in recent years from 1980 to 2000.On the basis of underground water resources quantity evaluation in the balance calculation areas,the underground water resources quantity in the water resources division areas are determined.The overall analysis is carried out for underground water resources quantity distribution and features in the Yangtze River Basin,providing a sound foundation for favorable cycle of water ecology and underground water resources development and utilization of the Yangtze River Basin.