A Simplified Infiltration Model for Predicting Cumulative Infiltration during Vertical Line Source Irrigation

doi:10.3390/w10010089

	A Simplified Infiltration Model for Predicting Cumulative Infiltration during Vertical Line Source Irrigation
	Fan, Yanwei 1,2; Huang, Ning 2; Gong, Jiaguo 3; Shao, Xiaoxia 1; Zhang, Jie 2; Zhao, Tong 1
刊名	WATER
	2018-01
卷号	10 期号:1
关键词	vertical line source irrigation cumulative infiltration simplified infiltration model HYDRUS-2D
ISSN号	2073-4441
DOI	10.3390/w10010089
英文摘要	Vertical line source irrigation is a water-saving irrigation method for enhancing direct water and nutrient delivery to the root zone, reducing soil evaporation and improving water and nutrient use efficiency. To identify its influencing factors, we performed computer simulations using the HYDRUS-2D software. The results indicate that for a given soil, the line source seepage area, but not the initial soil water content and buried depth, has a significant effect on the cumulative infiltration. We thus proposed a simplified method, taking into account the seepage area for predicting the cumulative infiltration based on the Philip model. Finally, we evaluated the accuracy of the simplified method using experimental data and found the cumulative infiltrations predicted by the simplified method were in very good agreement with the observed values, showing a low mean average error of 0.028-0.480 L, a root mean square error of 0.043-0.908 L, a percentage bias of 0.321-0.900 and a large Nash-Sutcliffe coefficient close to 1.0 (NSE >= 0.995). The results indicate that this simplified infiltration model, for which the only emitter parameter required is the seepage area, could provide a valuable and practical tool for irrigation design.
资助项目	Independent Research Project of the State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research[2016ZY01]
WOS研究方向	Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000424397400086
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32945]
专题	能源与动力工程学院机电工程学院
通讯作者	Huang, Ning
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Coll Civil Engn & Mech, Minist Educ China, Key Lab Mech Disaster & Environm Western China, Lanzhou 730050, Gansu, Peoples R China 3.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycles Rive, Beijing 100038, Peoples R China
推荐引用方式 GB/T 7714	Fan, Yanwei,Huang, Ning,Gong, Jiaguo,et al. A Simplified Infiltration Model for Predicting Cumulative Infiltration during Vertical Line Source Irrigation[J]. WATER,2018,10(1).
APA	Fan, Yanwei,Huang, Ning,Gong, Jiaguo,Shao, Xiaoxia,Zhang, Jie,&Zhao, Tong.(2018).A Simplified Infiltration Model for Predicting Cumulative Infiltration during Vertical Line Source Irrigation.WATER,10(1).
MLA	Fan, Yanwei,et al."A Simplified Infiltration Model for Predicting Cumulative Infiltration during Vertical Line Source Irrigation".WATER 10.1(2018).