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STUDY OF SOIL WATER MOVEMENT AND GROUNDWATER RECHARGE FOR THE LOESS TABLELAND USING ENVIRONMENTAL TRACERS
Cheng, L.1,2; Liu, W.1; Li, Z.3; Chen, J.1,4
2014
Source PublicationTRANSACTIONS OF THE ASABE
Volume57Issue:1Pages:23-30
AbstractGroundwater is the primary water resource for human use on the Loess Tableland of China; however, the depletion of groundwater has been very severe in recent years. To understand the reasons for groundwater depletion, it is necessary to understand its recharge mechanisms. The objective of this study is to reveal the mechanisms of groundwater recharge on the Loess Tableland using deuterium and oxygen-18 in precipitation, in soil water under three land use types (natural grassland, wheat field, and apple orchard), and in groundwater Results indicate that piston flow and preferential flow coexist in rainfall infiltration; however their occurrences are greatly influenced by land use type. They both occurred in the natural grassland and wheat field; however; only piston flow was detected in the apple orchard. Groundwater is likely to be recharged by both piston flow and preferential flow through the unsaturated zone, while preferential flow should be the main recharge mechanism, as the isotopic composition of the groundwater is very close to that of precipitation while quite different from that of deep soil water However, groundwater recharge by preferential flow only occurred in the natural grassland or wheat field, but not in apple orchard due to its thick dry soil layer. Regarding groundwater recharge by piston flow, it possibly occurs in most years for the natural grassland and in wet years for the wheat field; however, it is possibly difficult for the apple orchard to recharge groundwater by piston flow. The above results suggest that the conversion of farmland to apple orchard can affect the natural mode of the water cycle and reduce groundwater recharge on the Loess Tableland; therefore, attention should be paid to adjustments of land use.
SubtypeArticle
KeywordDeuterium Land Use Oxygen-18 Piston Flow Preferential Flow
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedAgriculture
WOS KeywordSTABLE-ISOTOPES ; DRY SOILS ; UNSATURATED ZONE ; TRITIUM PROFILES ; NORTH CHINA ; O-18 ; DEUTERIUM ; OXYGEN ; EVAPORATION ; HYDROGEN
Indexed BySCI
Language英语
WOS SubjectAgricultural Engineering
WOS IDWOS:000333774700003
PublisherAMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68450
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, W.
Affiliation1.Chinese Acad Sci & Minist Water Resources, State Key Lab Soil Eros & Dryland Fanning Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Pingdingshan Univ, Coll Resource & Environm Sci, Pingdingshan, Peoples R China
3.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Peoples R China
4.Univ Quebec, Dept Construct Engn, Montreal, PQ, Canada
Recommended Citation
GB/T 7714
Cheng, L.,Liu, W.,Li, Z.,et al. STUDY OF SOIL WATER MOVEMENT AND GROUNDWATER RECHARGE FOR THE LOESS TABLELAND USING ENVIRONMENTAL TRACERS[J]. TRANSACTIONS OF THE ASABE,2014,57(1):23-30.
APA Cheng, L.,Liu, W.,Li, Z.,&Chen, J..(2014).STUDY OF SOIL WATER MOVEMENT AND GROUNDWATER RECHARGE FOR THE LOESS TABLELAND USING ENVIRONMENTAL TRACERS.TRANSACTIONS OF THE ASABE,57(1),23-30.
MLA Cheng, L.,et al."STUDY OF SOIL WATER MOVEMENT AND GROUNDWATER RECHARGE FOR THE LOESS TABLELAND USING ENVIRONMENTAL TRACERS".TRANSACTIONS OF THE ASABE 57.1(2014):23-30.
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