Distribution, characteristics and influencing factors of fresh groundwater resources in the Loess Plateau, China

Li，Hai xue1; Han，Shuang bao1,2; Wu，Xi1; Wang，Sai1; Liu，Wei po1; Ma，Tao1; Zhang，Meng nan1; Wei，Yu tao3; Yuan，Fu qiang4; Yuan，Lei1; Li，Fu cheng1; Wu，Bin1; Wang，Yu shan1; Zhao，Min min1; Yang，Han wen5; Wei，Shi bo1

2021-09-01

10.31035/cg2021057

China Geology   影响因子和分区

2096-5192

2096-5192

The fresh groundwater in the Loess Plateau serves as a major source of water required for the production and livelihood of local residents and is greatly significant for regional economic and social development and ecological protection. This paper analyzes the hydrogeological conditions and groundwater characteristics in the Loess Plateau, expatiates on the types and distribution characteristics of the fresh groundwater in the plateau, and analyzes the influencing factors and mechanisms in the formation of the fresh groundwater in the plateau as a priority. Based on this, it summarizes the impacts of human activities and climatic change on the regional fresh groundwater. The groundwater in Loess Plateau features uneven temporal-spatial distribution, with the distribution space of the fresh groundwater closely relating to precipitation. The groundwater shows a distinct zoning pattern of hydrochemical types. It is fresh water in shallow parts and is salt water in deep parts overall, while the fresh water of exploration value is distributed only in a small range. The storage space and migration pathways of fresh groundwater in the loess area feature dual voids, vertical multilayers, variable structure, poor renewability, complex recharge processes, and distinct spatial differences. In general, the total dissolved solids (TDS) of the same type of groundwater tends to gradually increase from recharge areas to discharge areas. Conditions favorable for the formation of fresh groundwater in loess tablelands include the low content of soluble salts in strata, weak evaporation, and special hydrodynamic conditions. Owing to climate change and human activities, the resource quantity of regional fresh water tends to decrease overall, and the groundwater dynamic field and the recharge-discharge relationships between groundwater and surface water have changed in local areas. Human activities have a small impact on the water quality but slightly affect the water quantity of the groundwater in loess. © 2021 China Geology Editorial Office.

China Climate change Distribution pattern Fresh groundwater Human activities Hydrogeological survey engineering Loess Plateau

ESCI

英语

其他

project of China Geological Survey["DD20190333","DD20211563"] ; National Youth Science Foundation[41702280]

Geology

Geology

WOS:000721114400013

CHINA GEOLOGY EDITORIAL OFFICE

2-s2.0-85119435448

Scopus

1.Center for Hydrogeology and Environmental Geology Survey,China Geological Survey,Baoding,071051,China
2.Southern University of Science and Technology,Shenzhen,518055,China
3.Geological Environment Monitoring Institute of Gansu Province,Lanzhou,730050,China
4.China Institute for GeoEnvironmental Monitoring,China Geological Survey,Beijing,100081,China
5.Xi'an Center,China Geological Survey,Xi'an,710100,China

Li，Hai xue,Han，Shuang bao,Wu，Xi,et al. Distribution, characteristics and influencing factors of fresh groundwater resources in the Loess Plateau, China[J]. China Geology,2021,4(3):509-526.

Li，Hai xue.,Han，Shuang bao.,Wu，Xi.,Wang，Sai.,Liu，Wei po.,...&Wei，Shi bo.(2021).Distribution, characteristics and influencing factors of fresh groundwater resources in the Loess Plateau, China.China Geology,4(3),509-526.

Li，Hai xue,et al."Distribution, characteristics and influencing factors of fresh groundwater resources in the Loess Plateau, China".China Geology 4.3(2021):509-526.