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Effects of irrigation on water and energy balances in the Heihe River basin using VIC model under different irrigation scenarios
Chen, YY (Chen, Yuyao)1; Niu, J (Niu, Jun)1; Kang, SZ (Kang, Shaozhong)1; Zhang, XT (Zhang, Xiaotao)2
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
2018-12-15
Volume645Issue:0Pages:1183-1193
DOI10.1016/j.scitotenv.2018.07.254
Abstract

Investigations of the water and energy balance in large river basins is one of the most important and contemporary issues, which is helpful to guide agricultural production and regional water resource management. Traditionally, water and energy balance have been assessed by field-scale experiments. However, it is not easy to find the effective ways for a whole region using limited observed data from on-farm experiments. In our study, the effects of irrigation water on surface water and energy balance fluxes are examined by employing the Variable Infiltration Capacity (VIC) model and irrigation scheme, for the upper and middle reaches of the Heihe River Basin in Northwest China. The model simulations are calibrated and validated using both streamflow records at a gauge station and eddy covariance observations at two stations. Besides, three irrigation scenarios are set as full irrigation, 90% and 75% of irrigation water requirement (IWR). The results showed the infiltration curve parameter (b) and the thickness of lower soil moisture layer (d(2)) are the most sensitive model parameters. Long-termirrigation activities lead to a greater evapotranspiration (or latent heat). With considering local irrigation water-using coefficient for the period 2001-2010 of 0.527, the total IWR is about 2.81 x 10(9) m(3)/year (the net IWR is about 1.48 x 10(9) m(3)/year). Compared with the no-irrigation baseline, the increase in latent heat flux (about 4.45 W/m(2)) or the significant decrease in Bowen Ratio (about 1.05) due to full irrigation activities is accompanied by a decrease in annual average surface temperature (about 0.076 degrees C) for the middle reaches of the Heihe River basin during the 10-year period. (C) 2018 Elsevier B.V. All rights reserved.

Subject Area地理学
WOS IDWOS:000445164200118
Language英语
Indexed BySCIE
KeywordLand-surface Model Climate-change Soil-moisture Global Rivers Runoff Model South China Productivity Impacts Weather Fluxes
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Cooperation Status国内
ISSN0048-9697
Department环境变化与地表过程重点实验室
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8476
Collection图书馆
Corresponding AuthorNiu, J (Niu, Jun)
Affiliation1.China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Chen, YY ,Niu, J ,Kang, SZ ,et al. Effects of irrigation on water and energy balances in the Heihe River basin using VIC model under different irrigation scenarios[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,645(0):1183-1193.
APA Chen, YY ,Niu, J ,Kang, SZ ,&Zhang, XT .(2018).Effects of irrigation on water and energy balances in the Heihe River basin using VIC model under different irrigation scenarios.SCIENCE OF THE TOTAL ENVIRONMENT,645(0),1183-1193.
MLA Chen, YY ,et al."Effects of irrigation on water and energy balances in the Heihe River basin using VIC model under different irrigation scenarios".SCIENCE OF THE TOTAL ENVIRONMENT 645.0(2018):1183-1193.
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