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Comparison of the accuracy of two soil moisture sensors and calibration models for different soil types on the loess plateau
Jia, Junchao1,2; Zhang, Pingping3; Yang, Xiaofeng4; Zhen, Qing2,4; Zhang, Xingchang1,2
Corresponding AuthorZhang, Xingchang(zhangxc@ms.iswc.ac.cn)
2020-06-02
Source PublicationSOIL USE AND MANAGEMENT
ISSN0266-0032
Pages11
AbstractThe 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.
Keywordbulk density clay content Diviner 2000 soil water content TDR-315L
DOI10.1111/sum.12587
WOS KeywordTIME-DOMAIN REFLECTOMETRY ; WATER-CONTENT ; PROBES ; TEMPERATURE ; TDR
Indexed BySCI ; SCI
Language英语
Funding ProjectOpen 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 Research AreaAgriculture
Funding OrganizationOpen 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
WOS SubjectSoil Science
WOS IDWOS:000537088000001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/14810
Collection生态环境研究室
Corresponding AuthorZhang, Xingchang
Affiliation1.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
Recommended Citation
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.
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