Changes in groundwater resources and their influencing factors in Songnen Plain, China

IF 1.7 4区 地球科学 Q3 WATER RESOURCES
Qiang Liu, Xiao-dong Guo, Chang-qi Wang, Nan Lin, Hui-rong Zhang, Lin Chen, Yan Zhang
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Abstract

The Songnen Plain is a crucial agricultural area in China, and in the past 20 years, a large number of dry fields have been developed into paddy fields in order to improve land output efficiency. As a result, the effective irrigation area of agriculture has increased annually, and the conversion mode and quantity between surface water and groundwater have changed considerably. It is essential to identify the changes in groundwater resources and their influencing factors for the sustainable development of economy and society. This study evaluates groundwater resources in the Songnen Plain using the water balance method based on meteorological, hydrological and groundwater monitoring data from 2000 to 2020. The results show that the groundwater resources in the region amount to 15.945 billion m3 with precipitation infiltration being the most important component, accounting for 73.09%, which is followed surface water irrigation infiltration and river and ditch infiltration, constituting 14.55% and 10.32%, respectively. Different factors influence groundwater resources in different periods. Compared to 1985, the increase of surface water irrigation infiltration is the primary factor responsible for the increase of groundwater resources, while other recharge sources have decreased during the same period. Compared to 2005, all groundwater resources have increased, with the increase of surface water irrigation infiltration and river channel infiltration being the primary factors.
松嫩平原地下水资源变化及其影响因素
松嫩平原是中国重要的农业区,近20年来,为了提高土地产出效率,大量旱田被开发成水田。农业有效灌溉面积逐年增加,地表水与地下水的转换方式和转换量发生了较大变化。研究地下水资源变化及其影响因素对经济社会的可持续发展至关重要。基于2000 - 2020年气象、水文和地下水监测资料,采用水量平衡法对松嫩平原地下水资源进行了评价。结果表明:该地区地下水资源总量为159.45亿m3,其中降水入渗是最重要的组成部分,占73.09%,其次是地表水灌溉入渗和河沟入渗,分别占14.55%和10.32%。不同时期影响地下水资源的因素不同。与1985年相比,地表水灌溉入渗增加是造成地下水资源增加的主要因素,同期其他补给源均有所减少。与2005年相比,地下水资源均有所增加,其中地表水灌溉入渗和河道入渗增加是主要影响因素。
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来源期刊
CiteScore
2.80
自引率
9.10%
发文量
308
期刊介绍: It publishes original, innovative, and integrative research in groundwater science and engineering with a focus on hydrogeology, environmental geology, groundwater resources, agriculture and groundwater, groundwater resources and ecology, groundwater and geologic environment, groundwater circulation, groundwater pollution, groundwater exploitation and utilization, hydrogeological standards and methods, groundwater information science, climate change and groundwater. The Editorial Board is composed of more than sixty world-renowned experts and scholars, 47% of whom are foreign scientists. Up to now, the foreign authors contributed papers are from USA, Japan, Canada, Australia, Russia, Mongolia, Thailand and Vietnam.
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