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Impact of agricultural water-saving practices on regional evapotranspiration: The role of groundwater in sustainable agriculture in arid and semi-arid areas
Chen, Hang1; Huo, Zailin1; Dai, Xiaoqin2; Ma, Suying3; Xu, Xu1; Huang, Guanhua1
2018-12-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume263Pages:156-168
Corresponding AuthorHuo, Zailin(huozl@cau.edu.cn)
AbstractEvapotranspiration (ET) is an important component of the water budget process and is characterized by complex spatiotemporal changes, especially in irrigated agricultural areas. The impact of various hydrological processes and human activities on ET is still a meaty theme to study and investigate. A typical agricultural irrigation district with shallow groundwater and arid climate conditions was selected as the case study area in this work. The impact of the supplied irrigation water, shallow groundwater, crop planting pattern, and weather conditions on regional ET was determined after the regional ET was estimated by a Surface Energy Balance Algorithm of Land (SEBAL) model with Moderate Resolution Imaging Spectroratiometer (MODIS) data. The results show that the regional ET in Hetao kept declining in the past 15 years. The positive correlation between the water input (water diversion and precipitation) and ET indicated that reduced water diversion controls the declining ET, also causing the drop of groundwater level. Due to capillary forces and root uptake, the shallow groundwater tended to move upward to support the crop water consumption because the soil suffered from a water deficit. Furthermore, we quantified the contribution of shallow groundwater to regional ET and found that the water supplied from shallow groundwater increased from 5% to 15% during the period of water-saving irrigation. However, the long-term decrease of irrigation water supply and groundwater level caused a soil water deficit over the crop growth period, and the variation of crop planting pattern reduced ET as well. Therefore, groundwater plays an important role in sustainable agricultural development in arid and semiarid areas and the contribution of shallow groundwater to regional water consumption cannot be neglected.
KeywordIrrigation district SEBAL model Evapotranspiration Water saving irrigation Shallow groundwater
DOI10.1016/j.agrformet.2018.08.013
WOS KeywordREGULATED DEFICIT IRRIGATION ; SOUTH-CENTRAL NEBRASKA ; SURFACE-ENERGY FLUXES ; SHALLOW GROUNDWATER ; WINTER-WHEAT ; NORTH CHINA ; SOIL-WATER ; MAPPING EVAPOTRANSPIRATION ; YELLOW-RIVER ; SEBAL MODEL
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFC0400107] ; National Natural Science Foundation of China[51679236] ; National Natural Science Foundation of China[51639009] ; administration of the Hetao Irrigation District ; Shahaoqu Experimental Station
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; administration of the Hetao Irrigation District ; Shahaoqu Experimental Station
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000449236500015
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/52567
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHuo, Zailin
Affiliation1.China Agr Univ, Ctr Agr Water Res China, 17 Qinghua East Rd, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Stn, Beijing 100101, Peoples R China
3.Hebei Inst Water Resources, Shijiazhuang 055057, Hebei, Peoples R China
Recommended Citation
GB/T 7714
Chen, Hang,Huo, Zailin,Dai, Xiaoqin,et al. Impact of agricultural water-saving practices on regional evapotranspiration: The role of groundwater in sustainable agriculture in arid and semi-arid areas[J]. AGRICULTURAL AND FOREST METEOROLOGY,2018,263:156-168.
APA Chen, Hang,Huo, Zailin,Dai, Xiaoqin,Ma, Suying,Xu, Xu,&Huang, Guanhua.(2018).Impact of agricultural water-saving practices on regional evapotranspiration: The role of groundwater in sustainable agriculture in arid and semi-arid areas.AGRICULTURAL AND FOREST METEOROLOGY,263,156-168.
MLA Chen, Hang,et al."Impact of agricultural water-saving practices on regional evapotranspiration: The role of groundwater in sustainable agriculture in arid and semi-arid areas".AGRICULTURAL AND FOREST METEOROLOGY 263(2018):156-168.
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