Comparison of the accuracy of two soil moisture sensors and calibration models for different soil types on the loess plateau

doi:10.1111/sum.12587

	Comparison of the accuracy of two soil moisture sensors and calibration models for different soil types on the loess plateau
	Jia, Junchao 1,2; Zhang, Pingping 3; Yang, Xiaofeng 4; Zhen, Qing 2,4; Zhang, Xingchang 1,2
刊名	SOIL USE AND MANAGEMENT
	2020-06-02
页码	11
关键词	bulk density clay content Diviner 2000 soil water content TDR-315L
ISSN号	0266-0032
DOI	10.1111/sum.12587
通讯作者	Zhang, Xingchang(zhangxc@ms.iswc.ac.cn)
英文摘要	The accurate monitoring of soil moisture is critical for many environmental and hydrological applications, and commercial sensors have been used widely to detect the soil water content. However, the sensitivity of these sensors to the soil texture and bulk density demands calibration before conducting determinations. In the present study, we calibrated two soil moisture sensors (TDR-315L and Diviner 2000) for six common soil types found on the Loess Plateau, China. The root mean square error (RMSE), ratio of the lack-of-fit mean square error and mean square pure error were calculated to compare the accuracies of the sensors and models. The results indicated that TDR-315L was more accurate than Diviner 2000 for all of the samples. A new model that includes the bulk density and clay content obtained higher accuracy when calibrating the TDR-315L sensor. And it is showed that the RMSE of volumetric water content (VWC) from the new model compared to the gravimetry are less than 0.039 m(3) m(-3). For the Diviner 2000 sensor, adjusting the parameters in the calibration model allowed the accurate estimation of the VWC, where the RMSE of VWC from the calibration model compared to the gravimetry are less than 0.033 m(3) m(-3). The results obtained in this study may facilitate the use of sensors in soil moisture observational networks and environmental and hydrological applications.
资助项目	Open Research Fund of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-1706] ; National Natural Science Foundation of China[41501236] ; China Postdoctoral Science Foundation[2017M620892]
WOS关键词	TIME-DOMAIN REFLECTOMETRY ; WATER-CONTENT ; PROBES ; TEMPERATURE ; TDR
WOS研究方向	Agriculture
语种	英语
出版者	WILEY
WOS记录号	WOS:000537088000001
资助机构	Open Research Fund of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159606]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Xingchang
作者单位	1.Bioagr Inst Shaanxi, Xian 710043, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Jia, Junchao,Zhang, Pingping,Yang, Xiaofeng,et al. Comparison of the accuracy of two soil moisture sensors and calibration models for different soil types on the loess plateau[J]. SOIL USE AND MANAGEMENT,2020:11.
APA	Jia, Junchao,Zhang, Pingping,Yang, Xiaofeng,Zhen, Qing,&Zhang, Xingchang.(2020).Comparison of the accuracy of two soil moisture sensors and calibration models for different soil types on the loess plateau.SOIL USE AND MANAGEMENT,11.
MLA	Jia, Junchao,et al."Comparison of the accuracy of two soil moisture sensors and calibration models for different soil types on the loess plateau".SOIL USE AND MANAGEMENT (2020):11.