气候变化领域集成服务门户(CCPortal): Effects of irrigation on water and energy balances in the Heihe River basin using VIC model under different irrigation scenarios

CCPortal

DOI	10.1016/j.scitotenv.2018.07.254
	Effects of irrigation on water and energy balances in the Heihe River basin using VIC model under different irrigation scenarios
	Chen, Yuyao; Niu, Jun; Kang, Shaozhong; Zhang, Xiaotao
通讯作者	Niu, J (通讯作者)
发表日期	2018
ISSN	0048-9697
EISSN	1879-1026
起始页码	1183
结束页码	1193
卷号	645
英文摘要	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.
关键词	LAND-SURFACE MODEL SOIL-MOISTURE CLIMATE-CHANGE RUNOFF MODEL PRODUCTIVITY IMPACTS WEATHER REQUIREMENTS EXPLORATION CALIBRATION
英文关键词	Irrigation; VIC model; Evapotranspiration; Surface temperature; Eddy covariance; Heihe River
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000445164200118
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259127
推荐引用方式 GB/T 7714	Chen, Yuyao,Niu, Jun,Kang, Shaozhong,et al. Effects of irrigation on water and energy balances in the Heihe River basin using VIC model under different irrigation scenarios[J]. 中国科学院青藏高原研究所,2018,645.
APA	Chen, Yuyao,Niu, Jun,Kang, Shaozhong,&Zhang, Xiaotao.(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.
MLA	Chen, Yuyao,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(2018).