Predicting Spatial Variability of Soil Bulk Density in Gravel-Mulched Fields

doi:10.1061/(ASCE)HE.1943-5584.0001667

	Predicting Spatial Variability of Soil Bulk Density in Gravel-Mulched Fields
	Zhao, Wenju; Cui, Zhen; Fan, Yanwei; Cao, Qiangzhong
刊名	JOURNAL OF HYDROLOGIC ENGINEERING
	2018-06
卷号	23 期号:6
关键词	Soil bulk density Soil-water content Kriging interpolation Gravel-mulched fields Spatial variability
ISSN号	1084-0699
DOI	10.1061/(ASCE)HE.1943-5584.0001667
英文摘要	Information about soil bulk density (SBD) is important for soil-water conservation, carbon content, and nutrient reserves. The authors studied the spatial variability of SBD in gravel-mulched fields of different ages in an arid area of northwestern China. The SBDs of a new gravel-mulched field (NGM), a moderately aged gravel-mulched field (MGM), an old gravel-mulched field (OGM), and bare land (CK) ranged from 1.07 to 1.41, 1.15 to 1.41, 1.18 to 1.38, and 1.04 to 1.29 g/cm(3), respectively, with a general trend of OGM>MGM>NGM>CK. The coefficients of variation were less than 7.58%, indicating weak spatial variability. SBD was strongly correlated with soil-water content (SWC), indicating that the distribution of high and low SBD can be approximately estimated using SWC distribution. Kriging could effectively predict the spatial distribution of SBD in the study area with a high precision of interpolation, but estimating SBD using cokriging by measuring SWC was more accurate. (C) 2018 American Society of Civil Engineers.
资助项目	National Natural Science Foundation of China[51269008][51409137] ; HongLiu Young Teachers Training Program of 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:000431117400014
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32611]
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,Fan, Yanwei,et al. Predicting Spatial Variability of Soil Bulk Density in Gravel-Mulched Fields[J]. JOURNAL OF HYDROLOGIC ENGINEERING,2018,23(6).
APA	Zhao, Wenju,Cui, Zhen,Fan, Yanwei,&Cao, Qiangzhong.(2018).Predicting Spatial Variability of Soil Bulk Density in Gravel-Mulched Fields.JOURNAL OF HYDROLOGIC ENGINEERING,23(6).
MLA	Zhao, Wenju,et al."Predicting Spatial Variability of Soil Bulk Density in Gravel-Mulched Fields".JOURNAL OF HYDROLOGIC ENGINEERING 23.6(2018).