气候变化领域集成服务门户(CCPortal): COMPARISON AND MODIFICATION OF EQUATIONS FOR CALCULATING EVAPOTRANSPIRATION (ET) WITH DATA FROM GANSU PROVINCE, NORTHWEST CHINA

CCPortal

DOI	10.1002/ird.502
	COMPARISON AND MODIFICATION OF EQUATIONS FOR CALCULATING EVAPOTRANSPIRATION (ET) WITH DATA FROM GANSU PROVINCE, NORTHWEST CHINA
	Zhai, Luxin; Feng, Qi; Li, Qisen; Xu, Cundong
发表日期	2010
ISSN	1531-0353
EISSN	1531-0361
卷号	59 期号:4
英文摘要	A total of 11 empirical evapotranspiration equations were developed by Hargreaves (1975), Hargreaves (1985), Makkink, Turc, Priestley-Taylor, Jensen Haise. Doorenbos and Pruitt, Abtew, McGuinness and Bordne. Rohwer and Blaney-Criddle. These wine compared with pan evaporation data measured at 10 stations in Gansu Province. northwest China The comparison was first made using the default values in each of the 11 equations, and then redone using calibrated coefficient values. The calibration was made for all 11 equations using the climatic index PIP The results show that using default coefficient values resulted in large errors for all equations. The largest error was found in the comparison results of the Turc, and McGuinness and Bordne equations. The Ture and Jensen Haise equations should be used to estimate the daily evapotranspiration (ET) under the conditions of T-mean > 0 and T-mean > -3 degrees C, respectively, when applied to northwest China Based on the comparison results of before and after recalibration, the Doorenbos and Pruitt method is more suitable to the arid, semiarid and wet regions in northwest China. The accuracy of the results for determining monthly ET greatly improved when calibrated coefficient values were introduced to the 11 equations, except for McGuinness and Bordne, Abtew, and Blaney-Criddle, which need to be recalibrated using two parameters. Thus, It can be concluded that calibration can be used to modify evapotranspiration equations with multi-station data to improve the accuracy of evapotranspiration estimates in northwest China Copyright (C) 2009 John Wiley & Sons, Ltd
关键词	evapotranspiration empirical method pan evaporation: climatic index northwest China
学科领域	Agriculture; Water Resources
语种	英语
WOS研究方向	Agronomy ; Water Resources
来源期刊	IRRIGATION AND DRAINAGE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111599
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhai, Luxin,Feng, Qi,Li, Qisen,et al. COMPARISON AND MODIFICATION OF EQUATIONS FOR CALCULATING EVAPOTRANSPIRATION (ET) WITH DATA FROM GANSU PROVINCE, NORTHWEST CHINA[J]. 中国科学院西北生态环境资源研究院,2010,59(4).
APA	Zhai, Luxin,Feng, Qi,Li, Qisen,&Xu, Cundong.(2010).COMPARISON AND MODIFICATION OF EQUATIONS FOR CALCULATING EVAPOTRANSPIRATION (ET) WITH DATA FROM GANSU PROVINCE, NORTHWEST CHINA.IRRIGATION AND DRAINAGE,59(4).
MLA	Zhai, Luxin,et al."COMPARISON AND MODIFICATION OF EQUATIONS FOR CALCULATING EVAPOTRANSPIRATION (ET) WITH DATA FROM GANSU PROVINCE, NORTHWEST CHINA".IRRIGATION AND DRAINAGE 59.4(2010).