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混交度是描述混交林中树种混交程度的重要空间结构指数。由于传统混交度仅以对象木与最近邻木之间的树种异同为基础,并不考虑最近邻木之间的树种差异,不能完全反映树种的空间隔离程度。本文在传统混交度的基础上,提出一种新的混交度即树种多样性混交度。通过比较,树种多样性混交度更能反映树种相互隔离程度,是一个较好的林分空间结构指数。
Mixed degree is an important spatial structure index that describes the degree of mixed tree species in mixed forest. Because the traditional mixed degree is only based on the similarities and differences between the tree species of the object wood and the nearest neighbor, it does not take into account the species differences between the nearest neighboring trees and can not fully reflect the degree of spatial isolation of the tree species. Based on the traditional mixed degree, this paper proposes a new degree of mixed degree, that is, the degree of mixed species diversity. By comparison, the diversity of species diversity can better reflect the degree of mutual isolation of tree species, which is a good index of spatial structure of forest.