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《Journal of Beijing Normal University(Natural Science)》 2007-03
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Xie Donghui Zhu Qijiang Wang Jindi Xu Kai (School of Geography and Remote Sensing Science,State Key Laboratory of Remote Sensing Science,Jointly Sponsored by Beijing Normal University and the Institute of Remote Sensing Applications of Chinese Academy of Sciences;Beijing Key Laboratory of Enviromental Remote Sensing and City Digitalization,Beijing Normal University: 100875,Beijing,China)  
To study the vertical distribution of biochemical parameters of crops quantitatively,summer corn is taken for an example.At first,the spectra of each leaf from top to bottom of corn canopy are measured in the summer of 2000 at Luancheng,Hebei province,China.Then the biochemical parameters of each leaf,including chlorophyll a+b,water contents and biomass contents,are inverted by using PROSPECT model.It is found that all biochemical parameters are obviously different with different leaf,and as the largest one,the relative difference of chlorophyll a+b between each leaf is 79.1% according the inverted results.In addition,the corn canopy structural parameters are measured,and then a virtual 3D corn scene is rebuilt by extended L system.Finally,the vertical distribution of biochemical parameters can be calculated based on the 3D scene,which is much more accurate with more divided layers.Therefore,this method can be applied to analyze crop situations and establish the relationship between the spectra of crop canopy and the vertical biochemical parameters in the future.
【Fund】: 国家自然科学基金资助项目(40571109 40601060);; 北京市自然科学基金资助项目(4051003);; 北京市共建资助项目(SYS100270431 JD100270540);; 长江学者和创新团队发展计划;; 博士后科学基金资助项目
【CateGory Index】: S513
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