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Groundwater recharge under irrigated agro-ecosystems in the North China Plain: From a critical zone perspective
Min, Leilei1; Qi, Yongqing1; Shen, Yanjun1; Wang, Ping2; Wang, Shiqin1; Liu, Meiying1,3
2019-06-01
Source PublicationJOURNAL OF GEOGRAPHICAL SCIENCES
ISSN1009-637X
Volume29Issue:6Pages:877-890
Corresponding AuthorQi, Yongqing(qiyq@sjziam.ac.cn)
AbstractFrom a critical zone perspective, the present paper aims to present the magnitude of groundwater recharge under different agricultural land-use types, reveal the process of water and solute transport in thick vadose zone, evaluate the time lag effect of recharge, and underscore the role of thickening vadose zone in recharge. The results indicated that different agricultural land-use types need to be further considered in recharge rate estimate. Under the typical irrigation condition in the piedmont plain, the recharge rate under flood irrigated winter wheat and summer maize (W/M_F), maize (M), non-cultivation (NC), native vegetation (NV), vegetables (V), and orchards (O) is 206.4, 149.7, 194.1, 46.4, 320.0, and 48.6 mm/yr, respectively. In the central plain, the value under W/M_F, M, NC, V, and cotton (C) is 92.8, 50.8, 85.0, 255.5, and 26.5 mm/yr, respectively. Soil water residence time (several years) and groundwater level response time (several months) should be distinguished to further understand the processes of groundwater recharge, because the soil water displacement velocities range from 0.2 to 2.2 m/yr while the rate of wetting front propagation is approximately 47 m/yr in the piedmont plain. The thickening vadose zone would prolong residence time of soil water and contaminant, which could postpone the time of or alleviate groundwater pollution, but have no significant influence on the magnitude of recharge in a long time scale. Recharge coefficient based on shorter time span (e.g. 2 or 3 years) should be used with caution as a parameter for groundwater resources evaluation, because it varies with total water input and target soil depth. Uncertainties in evapotranspiration and other water balance components should be evaluated in recharge estimation and the impact of land-use types on recharge should be emphasized. The critical zone science would greatly improve the understanding of groundwater recharge processes. The results of the present study will be helpful in sustainable groundwater resources management.
Keywordgroundwater recharge critical zone irrigated agro-ecosystems North China Plain
DOI10.1007/s11442-019-1634-x
WOS KeywordDEEP VADOSE ZONE ; UNSATURATED ZONE ; SOLUTE TRANSPORT ; WATER ; TIME ; CHLORIDE ; RESOURCES ; FARMLAND ; MOVEMENT ; CROPLAND
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Plan[2016YFC0401403] ; National Natural Science Foundation of China[41877169]
Funding OrganizationNational Key Research and Development Plan ; National Natural Science Foundation of China
WOS Research AreaPhysical Geography
WOS SubjectGeography, Physical
WOS IDWOS:000471039300002
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/58785
Collection中国科学院地理科学与资源研究所
Corresponding AuthorQi, Yongqing
Affiliation1.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Hebei Key Lab Water Saving Agr,Key Lab Agr Water, Shijiazhuang, Hebei, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Min, Leilei,Qi, Yongqing,Shen, Yanjun,et al. Groundwater recharge under irrigated agro-ecosystems in the North China Plain: From a critical zone perspective[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2019,29(6):877-890.
APA Min, Leilei,Qi, Yongqing,Shen, Yanjun,Wang, Ping,Wang, Shiqin,&Liu, Meiying.(2019).Groundwater recharge under irrigated agro-ecosystems in the North China Plain: From a critical zone perspective.JOURNAL OF GEOGRAPHICAL SCIENCES,29(6),877-890.
MLA Min, Leilei,et al."Groundwater recharge under irrigated agro-ecosystems in the North China Plain: From a critical zone perspective".JOURNAL OF GEOGRAPHICAL SCIENCES 29.6(2019):877-890.
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