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《Spectroscopy and Spectral Analysis》 2010-09
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Analysis of Spectral Features Based on Water Content of DesertVegetation

ZHAO Zhao1,LI Xia1*,YIN Ye-biao2,TANG Jin1,ZHOU Sheng-bin31.College of Pratacultural and Environmental Science,Xinjiang Agricultural University,Urumqi 830052,China2.College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi 830052,China3.Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China  
By using HR-768 field-portable spectroradiometer made by the Spectra Vista Corporation(SVC) of America,the hyper-spectral data of nine types of desert plants were measured,and the water content of corresponding vegetation was determined by roasting in lab.The continuum of measured hyperspectral data was removed by using ENVI,and the relationship between the water content of vegetation and the reflectance spectrum was analyzed by using correlation coefficient method.The result shows that the correlation between the bands from 978 to 1 030 nm and water content of vegetation is weak while it is better for the bands from 1 133 to 1 266 nm.The bands from 1 374 to 1 534 nm are the characteristic bands because of the correlation between them and water content is the best.By using cluster analysis and according to the water content,the vegetation could be marked off into three grades: high(70%),medium(50%-70%) and low(50%).The research reveals the relationship between water content of desert vegetation and hyperspectral data,and provides basis for the analysis of area in desert and the monitoring of desert vegetation by using remote sensing data.
【Fund】: 国家自然科学基金项目(40961027);; 水利部公益性行业科研项目(200801050);; 阜康北部荒漠过渡带防护林及植被恢复生态科技工程项目(0742141);; 自治区草地资源与生态实验室项目资助
【CateGory Index】: Q948
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