摘要
在长江流域2001~2016年最新观测资料基础上,依据平原区及山丘区的类型特征,分别采用补给法和排泄法计算了流域内12个水资源二级区和19个省级行政区内矿化度M小于等于2 g/L的浅层地下水资源量。结合水文地质条件、降水及人类活动等综合因素,全面论述了长江流域内地下水资源的空间分布特征,并考虑到各地区现阶段地下水资源开采量,进一步分析了不同区域的地下水资源开采潜力。分析结果表明:①对于平原区类型而言,上游流域地下水资源模数均值明显要高于中下游流域的地下水资源模数均值,长江北岸的地下水资源模数均值大于南岸的地下水资源模数均值;②对于山丘区类型而言,其地下水资源总量皆遵循自北向南逐渐递增的趋势,自上游向下游呈现出先增大后减小的趋势,而且湖庭湖、鄱阳湖、太湖三大湖区水系的地下水资源总量大于非湖区水系的地下水资源总量;③全流域现阶段地下水资源开采程度偏低,对应的开采潜力较大,仅河南省出现了地下水资源超采的现象。
This study employed the water balance method and the drainage method to estimate the groundwater resource amount of 12 water resource secondary zones and 19 provinces whose mineralization were below 2 g/L in the Changjiang River Basin,according to the latest observational dataset over 2001 to 2016.We comprehensively discussed the spatial distribution characteristics of the groundwater resources and further assessed the groundwater exploitation potentiality in the Changjiang River Basin based on the topographical characteristics,hydrological conditions,precipitation amount and human activities.Combined with the current groundwater resource exploitation in various regions,the groundwater exploitation potential of different regions was further analyzed.It was found that:①In the plain region,the groundwater resource module of upstream basins was larger than that of middle and downstream basins,and the module for northern side was larger than that of southern side.②The groundwater resource modules of hilly regions and whole Changjiang River Basin increased initially,followed by a decrease from the upstream region to the downstream region,and the module for southern side was larger than that of northern side.The groundwater resources of the Poyang Lake,Dongting Lake and Taihu Lake water system were greater than those of the non-lake area water system.③The exploitation degree of groundwater resources was low in the whole Changjiang River Basin,but the groundwater exploitation potentiality was still large,and only Henan Province had the problem of over-exploitation.
作者
贾建伟
王栋
何康洁
刘昕
JIA Jianwei;WANG Dong;HE Kangjie;LIU Xin(Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China)
出处
《人民长江》
北大核心
2021年第9期107-112,共6页
Yangtze River
基金
中国长江三峡集团有限公司项目(0704169)。
关键词
地下水资源量
地下水资源时空分布特征
地下水资源开采潜力
补给法
排泄法
长江流域
groundwater resources amount
temporal and spatial distribution characteristics of groundwater resources
exploitation potentiality of groundwater resources
water balance method
drainage method
Changjiang River Basin
