Root Water Uptake Model Considering Soil Temperature

doi:10.1061/(ASCE)HE.1943-5584.0000642

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 农业减灾研究室

	Root Water Uptake Model Considering Soil Temperature
	Lv, Guohua 1; Hu, Wei 2; Kang, Yaohu 2; Liu, Buchun 1; Li, Lan 3; Song, Jiqing 1
刊名	JOURNAL OF HYDROLOGIC ENGINEERING
	2013
卷号	18 期号:4 页码:394-400
关键词	Irrigation method Root water uptake Soil temperature Soil water simulation
ISSN号	1084-0699
DOI	10.1061/(ASCE)HE.1943-5584.0000642
通讯作者	Lv, Guohua
英文摘要	A field experiment was carried out to research the effect of soil temperature distribution on root water uptake in soil water simulation. Soil temperature distribution patterns under border irrigation and surface drip irrigation were researched. The root water uptake model was modified based on the effect of soil temperature on root water uptake. Results showed soil temperature profile distribution was greatly influenced by irrigation method. The range of temperature was larger under border irrigation, with the temperature being 3-6 degrees C higher in 0-20 cm depth than in 20-100 cm depth. Except for the top layer under surface drip irrigation, mean soil temperature showed the trend of exponential decay throughout the soil profile. The relationship between temperature and water uptake rate was expressed in exponential function. With the modification of the root water uptake model as affected by temperature profile distribution, the value of the root mean square error between the simulated and observed soil water decreased from approximately 0.04 to 0.02 in the top layer under border irrigation, but showed no obvious difference under surface drip irrigation. When soil temperature differed greatly in the top layer from the deep layer, the root water uptake model considering soil temperature could improve the precision of soil water simulation. The results indicated that the modified root water uptake model could be used to simulate soil water dynamics. DOI: 10.1061/(ASCE)HE.1943-5584.0000642. (C) 2013 American Society of Civil Engineers.
学科主题	Engineering, Civil ; Environmental Sciences ; Water Resources ; ENGINEERING, CIVIL ; ENVIRONMENTAL SCIENCES ; WATER RESOURCES
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000316561900004
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19858]
专题	农业环境与可持续发展研究所_农业减灾研究室
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Sichuan Agr Univ, Coll Resources & Environm, Chengdu 611130, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Lv, Guohua,Hu, Wei,Kang, Yaohu,et al. Root Water Uptake Model Considering Soil Temperature[J]. JOURNAL OF HYDROLOGIC ENGINEERING,2013,18(4):394-400.
APA	Lv, Guohua,Hu, Wei,Kang, Yaohu,Liu, Buchun,Li, Lan,&Song, Jiqing.(2013).Root Water Uptake Model Considering Soil Temperature.JOURNAL OF HYDROLOGIC ENGINEERING,18(4),394-400.
MLA	Lv, Guohua,et al."Root Water Uptake Model Considering Soil Temperature".JOURNAL OF HYDROLOGIC ENGINEERING 18.4(2013):394-400.