基于Voronoi图和Delaunay三角网的杉木游憩林空间结构

doi:10.11707/j.1001-7488.20141201

Abstract

Abstract:

In this paper, spatial structure (including aggregation index, mingling, neighborhood comparison, competition index and open degree) of a typical recreation forest in Jiangle state-owned forest farm of Fujian was analyzed by using the method of Voronoi diagram and the Delaunay triangulation to establish the spatial structure unit. The results indicated that: It was a common form with one subject tree with 6 nearest neighbor trees in Cunninghamia lanceolata recreational forest. The average aggregation index of the stand was 1.05. The spatial pattern of forest trees was uniformly distributed. The average mingling of the stand was 0.48. The degree of spatial segregation among tree species was not high with the intermediate mixed state. The average neighborhood comparisons based on DBH and tree height were 0.49 and 0.51. The differentiation of DBH and height was not significant, indicating a middle level of competition. Among superiority species, the competition index of Cunninghamia lanceolata was 346.27. The competitiveness was strong. The average open degree of the stand was 0.21. Thus, there is insufficient space for the trees' growing. On this basis, stand spatial structure and recreation value can be optimized through increasing open degree of the stand.

Key words: stand spatial structure, Voronoi diagram, Delaunay triangulated network, Cunninghamia lanceolata, recreational forest

CLC Number:

S759.5

Fang Jing, Sun Yujun, Guo Xiaoyu, Mei Guangyi. Stand Spatial Structure of Cunninghamia lanceolata Recreational Forest Based on Voronoi Diagram and Delaunay Triangulated Network[J]. Scientia Silvae Sinicae, 2014, 50(12): 1-6.

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Stand Spatial Structure of Cunninghamia lanceolata Recreational Forest Based on Voronoi Diagram and Delaunay Triangulated Network

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