Mismatch between crop water requirements and irrigation in Heihe River Basin, Northwestern China

doi:10.1007/s00271-018-0608-6

	Mismatch between crop water requirements and irrigation in Heihe River Basin, Northwestern China
	Tan, Minghong 1,2
刊名	IRRIGATION SCIENCE
	2019
卷号	37 期号:1 页码:95-103
ISSN号	0342-7188
DOI	10.1007/s00271-018-0608-6
通讯作者	Tan, Minghong(tanmh@igsnrr.ac.cn)
英文摘要	Heihe Inland River Basin is the second largest in China. Water use for agriculture in the middle section of the basin accounts for over 90% of total usage; this leads to lake shrinkage, river blanking, and desertification of the downstream basin. Crop water requirements within the Ganzhou district of the Heihe River Basin in Northwestern China were modeled using a parameter calibration of the CROPWAT model, based on household survey data on crop coefficients and water usage, taking into account effective precipitation. The results show that modeled evapotranspiration for seed maize was consistent with evapotranspiration determined from observed data based on eddy covariance, as adjusted R-2 values approached 0.73 (P < 0.001). Vast differences were observed between actual irrigation and water requirements across the study area. Excessive water was used for irrigation, particularly in the case of maize, where mismatches in dates were widespread between actual irrigation and water requirements. Thus, to save water and increase yield, a set schedule for irrigation was recommended.
资助项目	National Natural Science Foundation of Chin[91325302] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20040400]
WOS关键词	MIDDLE REACHES ; USE EFFICIENCY ; BOWEN-RATIO ; EVAPOTRANSPIRATION ; LAND ; PRODUCTIVITY ; SCARCITY ; BALANCE ; DEMAND ; WHEAT
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000454818800008
资助机构	National Natural Science Foundation of Chin ; Strategic Priority Research Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/51281]
专题	中国科学院地理科学与资源研究所
通讯作者	Tan, Minghong
作者单位	1.Chinese Acad Sci, IGSNRR, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Int Coll, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Tan, Minghong. Mismatch between crop water requirements and irrigation in Heihe River Basin, Northwestern China[J]. IRRIGATION SCIENCE,2019,37(1):95-103.
APA	Tan, Minghong.(2019).Mismatch between crop water requirements and irrigation in Heihe River Basin, Northwestern China.IRRIGATION SCIENCE,37(1),95-103.
MLA	Tan, Minghong."Mismatch between crop water requirements and irrigation in Heihe River Basin, Northwestern China".IRRIGATION SCIENCE 37.1(2019):95-103.