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Fig. 5 | Forest Ecosystems

Fig. 5

From: Evaluating the impact of sampling schemes on leaf area index measurements from digital hemispherical photography in Larix principis-rupprechtii forest plots

Fig. 5

Effective plant area index (PAIe) obtained by three inversion models (i.e. Beer, LAI-2200 and Miller) with the predefined sampling schemes (SS1-SS13) in the five plots. The PAIe estimates were obtained using Equations (A6), (A7) and (A8) by assuming the canopy element clumping index at θ (Ωe(θ)), Ωe at 57°, Ωe of the ith annulus (Ωe _ i) and needle-to-shoot area ratio (γ) are equal to 1 (Additional file 1)

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