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Assessing stand species and structural diversity at neighbourhood scale
- Yang, Hua, Man, Rongzhou
- MethodsX 2018 v.5 pp. 141-148
- forests, stand structure, surveys, trees
- Forest diversity assessments are typically conducted at stand scale. This traditional diversity assessment may provide substantial insight into overall stand structure but is limited with respect to describing within-stand variation, an important aspect of stand diversity. This article describes a method for assessing species and structural diversity at within-stand, neighbourhood scale.Nearest neighbours are determined from mapped tree locations in field survey plots. R codes (provided in appendices) are used to assist with determining species and structural diversity indices at a neighbourhood of 4 trees (a subject tree and the 3 nearest neighbours). Neighbourhood structural diversity indices are compared against structural complexity index (SCI) in capturing within-stand variation. Neighbourhood diversity indices, especially in managed stands, are useful for capturing spatial variation in species and structural diversity.