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Optical remote sensing technology is commonly used for forest biomass estimation. The NDVI is used to define greenness. But how can we tell about biomass after capture only canopy area from above? Is it only outermost layer, right? Can only NDVI represent the all biomass of tree?

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Not an expert in this field but I found this in quick Google search: enter image description here

Reference: https://doi.org/10.2307/1942049

I think from line 8 the answer to your question begins.

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    Sep 2, 2022 at 15:09

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