Monitoring and Predicting Soil-Clay Content from Soil-Water Content in a Gravel-Mulched Field in Northwestern China

doi:10.1061/(ASCE)HE.1943-5584.0001592

	Monitoring and Predicting Soil-Clay Content from Soil-Water Content in a Gravel-Mulched Field in Northwestern China
	Zhao, Wenju; Cui, Zhen; Zhou, Changquan; Luo, Minqiang
刊名	JOURNAL OF HYDROLOGIC ENGINEERING
	2017-12
卷号	22 期号:12
关键词	Particle-size distribution Soil-water content Clay content Gravel-mulched field Prediction
ISSN号	1084-0699
DOI	10.1061/(ASCE)HE.1943-5584.0001592
英文摘要	Particle-size distribution (PSD), especially clay content, is an important physical property of soil because of its large influence on soil hydrological characteristics, salinity, fertility, erodibility, nutrient content, swelling/shrinking, and degradation. The authors present a case study of soil PSD and its relationship with soil-water content (SWC) in a gravel-mulched field in an arid area of northwestern China using a statistical regression model and Pearson correlation coefficients. The SWC was correlated with clay content, and both increased with soil depth, with correlation coefficients ranging from 0.901 to 0.972. The regression analysis of clay content and SWC from various depths used the least-squares method, and the predictive accuracies of the regression models were evaluated with the data for measured clay content. Both the mean error and root mean square error were low and the prediction accuracy was high. The SWCs were significantly positively correlated between soil layers, with all correlation coefficients greater than 0.989, indicating that the SWC in a specific layer could be well estimated by the SWC in the adjacent subsoil. Clay content can thus be predicted from measured SWC, and can be further used to evaluate soil quality and productivity. This study also provides a theoretical reference for the prevention of salinization, the adjustment of land use and agricultural production, and the conservation of soil and water. (C) 2017 American Society of Civil Engineers.
资助项目	National Natural Science Foundation of China[51269008] ; Lanzhou University of Technology[Q201310]
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000416713200003
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32984]
专题	能源与动力工程学院
通讯作者	Zhao, Wenju
作者单位	Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wenju,Cui, Zhen,Zhou, Changquan,et al. Monitoring and Predicting Soil-Clay Content from Soil-Water Content in a Gravel-Mulched Field in Northwestern China[J]. JOURNAL OF HYDROLOGIC ENGINEERING,2017,22(12).
APA	Zhao, Wenju,Cui, Zhen,Zhou, Changquan,&Luo, Minqiang.(2017).Monitoring and Predicting Soil-Clay Content from Soil-Water Content in a Gravel-Mulched Field in Northwestern China.JOURNAL OF HYDROLOGIC ENGINEERING,22(12).
MLA	Zhao, Wenju,et al."Monitoring and Predicting Soil-Clay Content from Soil-Water Content in a Gravel-Mulched Field in Northwestern China".JOURNAL OF HYDROLOGIC ENGINEERING 22.12(2017).