Soil moisture estimation based on the microwave scattering mechanism during different crop phenological periods in a winter wheat-producing region

doi:10.1016/j.jhydrol.2020.125521

	Soil moisture estimation based on the microwave scattering mechanism during different crop phenological periods in a winter wheat-producing region
	Wu, Shangrong 1; Ren, Jianqiang 1; Chen, Zhongxin 1; Yang, Peng 1; Li, He 2
刊名	JOURNAL OF HYDROLOGY
	2020-11-01
卷号	590 页码:13
关键词	Soil moisture Semiempirical model Winter wheat coverage area Microwave scattering model Crop growth stage
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125521
通讯作者	Chen, Zhongxin(chenzhongxin@caas.cn) ; Yang, Peng(yangpeng@caas.cn)
英文摘要	In this research, a novel microwave scattering model-based semiempirical method for estimating the soil moisture of areas covered with winter wheat was proposed. In the proposed soil moisture estimation method, the crop and soil microwave scattering mechanisms during different crop phenological periods were considered to remove the influences of the wheat crop canopy on soil backscattering. Using RADARSAT-2 images and field-measured sample data, the validity and feasibility of the proposed soil moisture estimation method were verified in the study region of Hengshui City in the North China Plain. Among the winter wheat jointing stage, heading stage and maturity stage, the R-2, adjusted R-2 and RMSE values between the estimated soil moisture value and field-measured value were 0.762, 0.762 and 2.36%, respectively. The results indicate that high-accuracy soil moisture estimations could be obtained, and the proposed method had good performance in regional applications in the study region at key growth stages of winter wheat.
资助项目	National Natural Science Foundation of China[41801286] ; National Natural Science Foundation of China[41871353] ; National Natural Science Foundation of China[41921001] ; National Natural Science Foundation of China[41871358] ; Young Elite Scientists Sponsorship Program by the China Association for Science and Technology (CAST)[2018CAASS04] ; Open Project Fund for Key Laboratory of Agricultural Remote Sensing, Ministry of Agriculture and Rural Affairs[201708] ; Fundamental Research Funds for Central Non-profit Scientific Institutions[1610132019026] ; Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences (CAAS) ; Outstanding Talents and Innovative Team of Agricultural Scientific Research, Ministry of Agriculture and Rural Affairs
WOS关键词	LEAF-AREA INDEX ; SYNTHETIC-APERTURE RADAR ; RETRIEVAL ; MODEL ; INVERSION ; SERIES ; RICE
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000599754500219
资助机构	National Natural Science Foundation of China ; Young Elite Scientists Sponsorship Program by the China Association for Science and Technology (CAST) ; Open Project Fund for Key Laboratory of Agricultural Remote Sensing, Ministry of Agriculture and Rural Affairs ; Fundamental Research Funds for Central Non-profit Scientific Institutions ; Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences (CAAS) ; Outstanding Talents and Innovative Team of Agricultural Scientific Research, Ministry of Agriculture and Rural Affairs
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137503]
专题	中国科学院地理科学与资源研究所
通讯作者	Chen, Zhongxin; Yang, Peng
作者单位	1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Agr Remote Sensing, Minist Agr & Rural Affairs, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wu, Shangrong,Ren, Jianqiang,Chen, Zhongxin,et al. Soil moisture estimation based on the microwave scattering mechanism during different crop phenological periods in a winter wheat-producing region[J]. JOURNAL OF HYDROLOGY,2020,590:13.
APA	Wu, Shangrong,Ren, Jianqiang,Chen, Zhongxin,Yang, Peng,&Li, He.(2020).Soil moisture estimation based on the microwave scattering mechanism during different crop phenological periods in a winter wheat-producing region.JOURNAL OF HYDROLOGY,590,13.
MLA	Wu, Shangrong,et al."Soil moisture estimation based on the microwave scattering mechanism during different crop phenological periods in a winter wheat-producing region".JOURNAL OF HYDROLOGY 590(2020):13.