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Correlation Analysis of Vegetation Physical Parameters and Polarization Decomposition Parameters based on Grey System Theory:#br#
A Case Study in Poyang Lake Wetland |
Li Chunjiang1,2,Shen Guozhuang2,Zhang Jichao1 |
(1.School of Geomatics,LiaoNing Technology University,Fuxin 123000,China
2.Key Laboratory of Digital Earth,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100094,China) |
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Abstract based on the Grey System Theory,combing the three periods(2013,2015,and 2016) of the Radarsat-2 Polarimetric SAR(PolSAR) data and the vegetation physical parameters data collected from Poyang Lake wetland,we established the relationship model for the vegetation physical parameters with vegetation biomass and the polarization decomposition components,respectively.We analyzed the contribution of different vegetation physical parameters to biomass accumulation and their influence on polarization decomposition components.The results show that from the vegetation growing faster to slower stage,the plant parameters and underlying surface parameters are the main factors that contribute to the vegetation biomass accumulation.The main effective factors for the polarization decomposition components are the land surface parameters and the stem parameters.The parameters of field sampling are analyzed and determined based on the larger correlation degree data at each stage.
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Received: 08 May 2018
Published: 10 May 2019
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