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首页> 外文会议>Conference on remote sensing and modeling of ecosystems for sustainability >Influence of canopy biochemical and biophysical variables on reflectance spectra based on canopy radiative transfer model with adding noise
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Influence of canopy biochemical and biophysical variables on reflectance spectra based on canopy radiative transfer model with adding noise

机译：基于遮阳篷辐射转移模型的冠层生物化学和生物物理变量对反射光谱的影响

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To provide a reference for canopy parameters inversion, sensitivity analysis of plant canopy parameters based on remote sensing model is a prerequisite for the inversion. Because the local sensitivity analysis do not consider the coupling effect among the parameters, the EFAST (i.e., Extended Fourier Amplitude Sensitivity Test), a global sensitivity analysis, can be used not only for the analysis of each parameter, but also consider the interacted effect among each parameter. Based on PROSAIL model, the paper focused on the parameters' sensitivity by using simulated data and EFAST method. The results showed that the EFAST considered not only the contribution of single parameter, but also the interactive effects among each parameter, and four parameters, leaf area index (LAI), leaf mesophyll structure (N), the controller factor of the average leaf slope (LIDFa) and soil moisture condition (psoil) had great effect on the canopy reflectance in the whole wavelength from 400 to 2500 nm than other canopy parameters, and the EFAST method enlarged the contribution of some parameters that had little effects.
机译：为提供冠层参数的参考，基于遥感模型的植物冠层参数的灵敏度分析是反演的先决条件。由于局部灵敏度分析不考虑参数之间的耦合效果，因此不仅可以用于对每个参数的分析，而且可以使用全局灵敏度分析的EFST（即，扩展傅立叶幅度灵敏度测试），而还可以考虑互动效果在每个参数中。基于扶手模型，本文通过使用模拟数据和EFST方法对参数的灵敏度集中起来。结果表明，EFFT认为，不仅考虑了单个参数的贡献，还考虑了每个参数的互动效果，以及四个参数，叶面积指数（LAI），叶片叶片结构（n），平均叶斜率的控制器系数（LIDFA）和土壤水分状况（PSOIL）对整个波长的冠层反射率影响超过400至2500nm，而EFST方法扩大了一些效果的参数的贡献。

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