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Fig. 3 | Plant Methods

Fig. 3

From: Method for accurate multi-growth-stage estimation of fractional vegetation cover using unmanned aerial vehicle remote sensing

Fig. 3

Theory for quantifying the fraction of high-CCC vegetation, low-CCC vegetation, and soil based on VNAI and NDVI: a PROSAIL-based NDVI as a function of VNAI (Cab = 20–35 μg/cm2). b PROSAIL-based NDVI as a function of VNAI (Cab = 5–50 μg/cm2). c Quantifying FVC using plot of NDVI vs. VNAI. Note: NDVI1, NDVI2, and NDVI3 are the NDVI values for low-CCC vegetation, bare soil, and high-CCC vegetation, respectively; VNAI1, VNAI2, and VNAI3 are the VNAI values for low-CCC vegetation, bare soil, and high-CCC vegetation, respectively; point (VNAI0, NDVI0) represents a mixed pixel on the VNAI–NDVI 2-D scatter map, NDVI is the normalized difference vegetation index, and VNAI is the visible and near-infrared angle index

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Plant Methods

ISSN: 1746-4811