Study on spatial heterogeneity of road-region vegetation ecosystem based on fractal theory

XIE Meisi,ZHAO Chen

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (06) : 81-86.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (06) : 81-86. DOI: 10.3969/j.issn.1000-2006.2014.06.016

Study on spatial heterogeneity of road-region vegetation ecosystem based on fractal theory

  • XIE Meisi1,2,ZHAO Chen1*
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Abstract

In this paper,road-region data of selected urban roads in Nanjing city was collected by means of field survey. The pots shape index scale-frequency relation,the self-similar fractal characteristics and the determination coefficient of three vegetation types of grass,shrubs and trees were analyzed with grid method. Based on the analytical results,the road-region vegetation ecosystem accorded with the fractal characteristics was studied by means of semi-variogram analysis and fractal dimension calculation. The rationality of vegetation arrangement,the spatial heterogeneity and the ecosystem stability of vegetation were analyzed comparatively and quantitatively for different road-region and slope directions. In this paper,the fractal and spatial heterogeneity theories were applied to study the vegetation landscape of the road-region ecosystem. The grid method and the semi-variogram method were combined to apply to the analysis. The scale-frequency relation,fractal characteristic and spatial heterogeneity was analyzed. These leaded to an accurate calculation result of fractal index of road-region vegetation. The result showed that the pots shape index scale-frequency relation and self-similar fractal characteristics existed in continuous road-region vegetation. Fractal dimension could accurately and quantitatively value the spatial heterogeneity and ecosystem stability of road-region ecosystem.

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XIE Meisi,ZHAO Chen. Study on spatial heterogeneity of road-region vegetation ecosystem based on fractal theory[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2014, 38(06): 81-86 https://doi.org/10.3969/j.issn.1000-2006.2014.06.016

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