文献类型： 外文期刊
第一作者： Huang, Ting
作者： Huang, Ting;Liang, Liang;Wang, Jiahui;Geng, Di;Wang, Lijuan;Luo, Xiang
作者机构：
关键词： vegetation indices; PROSAIL; LAI; bandwidths
期刊名称：2019 8TH INTERNATIONAL CONFERENCE ON AGRO-GEOINFORMATICS (AGRO-GEOINFORMATICS)
ISSN： 2334-3168
年卷期： 2019 年
页码：
收录情况： SCI
摘要： The vegetation indices (VIs) have been widely used to invert the leaf area index (LAI), but in the process of inversion, the accuracy of inversion is often affected by various parameters. Based on the canopy, spectral reflectance simulated by the PROSAIL model, 15 vegetation indices that are commonly used for LAI inversion and have a higher mean coefficient of determination (R-2) with LAI are screened. By analyzing the sensitivity of vegetation index to bandwidth and the relationship between R2 and bandwidths, the influence of bandwidth on the accuracy of vegetation index inversion LAI is discussed. The results show that the accuracy of estimating LAI by vegetation indices is greatly affected by bandwidth. In addition, it is found that there is some optimal bandwidth for vegetation index.
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