LEAF AREA DETERMINATION FOR ALNUS GLUTIONOSA (L.) GAERTN USING NONDESTRUCTIVE METHODS
Abstract
This study evaluated the determination method of leaf area for common alder, Alnus glutinosa (L.) Gaertn, through nondestructive methods, based on leaves morphometric parameters (L, W) and the correction factor (CF). CF optimum value (CF = 0.73) has been found through successive calculations, with the differences between measured leaf area (MLA) and scanned leaf area (SLA) considered as reference and where minimal error (ME) appeared. The fitting between MLA (for CF = 0.73) and SLA (considered as reference) can be described by the linear equation (2), R2=0.986, p<<0.001. The interdependency between MLA and L was described by relation (4), with R2= 0.984, p<<0.001, and between MLA and W by relation (5), de R2=0.988, p<<0.001. Regression analysis facilitated the development of a model, relation (6), for the MLA estimation only on the leaf parameters L and W, basis, with R2=0.976, p<<0.001.
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