Poyang Lake wetland vegetation biomass inversion using polarimetric RADARSAT-2 synthetic aperture radar data

	Poyang Lake wetland vegetation biomass inversion using polarimetric RADARSAT-2 synthetic aperture radar data
	Shen, Guozhuang 1; Liao, Jingjuan 1; Guo, Huadong 1; Liu, Ju 1
刊名	JOURNAL OF APPLIED REMOTE SENSING
	2015
卷号	9 页码:542-546
关键词	synthetic aperture radar polarimetric decomposition canopy backscatter model biomass back propagation artificial neural network
通讯作者	Liao, JJ (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, 9 Dengzhuang South Rd, Beijing 100094, Peoples R China.
英文摘要	Poyang Lake is the largest freshwater lake in China and one of the most important wetlands in the world. Vegetation, an important component of wetland ecosystems, is one of the main sources of the carbon in the atmosphere. Biomass can quantify the contribution of wetland vegetation to carbon sinks and carbon sources. Synthetic aperture radar (SAR), which can operate in all day and weather conditions and penetrate vegetation to some extent, can be used to retrieve information about vegetation structure and the aboveground biomass. In this study, RADARSAT-2 polarimetric SAR data were used to retrieve aboveground vegetation biomass in the Poyang Lake wetland. Based on the canopy backscatter model, the vegetation backscatter characteristics in the C-band were studied, and a good relation between simulated backscatter and backscatter in the RADARSAT-2 imagery was achieved. Using the backscatter model, pairs of training data were built and used to train the back propagation artificial neural network. The biomass was retrieved using this ANN and compared with the field survey results. The root-mean-square error in the biomass estimation was 45.57 g/m(2). This shows that the combination of the model and polarimetric decomposition components can efficiently improve the inversion precision. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License.
研究领域[WOS]	Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000352833000001
内容类型	期刊论文
源URL	[http://ir.ceode.ac.cn/handle/183411/38253]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.[Shen, Guozhuang 2.Liao, Jingjuan 3.Guo, Huadong] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China 4.[Liu, Ju] Construct Informat Ctr Hebei Prov, Shijiazhuang 050051, Hebei Province, Peoples R China
推荐引用方式 GB/T 7714	Shen, Guozhuang,Liao, Jingjuan,Guo, Huadong,et al. Poyang Lake wetland vegetation biomass inversion using polarimetric RADARSAT-2 synthetic aperture radar data[J]. JOURNAL OF APPLIED REMOTE SENSING,2015,9:542-546.
APA	Shen, Guozhuang,Liao, Jingjuan,Guo, Huadong,&Liu, Ju.(2015).Poyang Lake wetland vegetation biomass inversion using polarimetric RADARSAT-2 synthetic aperture radar data.JOURNAL OF APPLIED REMOTE SENSING,9,542-546.
MLA	Shen, Guozhuang,et al."Poyang Lake wetland vegetation biomass inversion using polarimetric RADARSAT-2 synthetic aperture radar data".JOURNAL OF APPLIED REMOTE SENSING 9(2015):542-546.