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基于分形理论的路域植被生态系统空间异质性研究(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年06期
Page:
81-86
Column:
研究论文
publishdate:
2014-12-09

Article Info:/Info

Title:
Study on spatial heterogeneity of road-region vegetation ecosystem based on fractal theory
Article ID:
1000-2006(2014)06-0081-06
Author(s):
XIE Meisi12ZHAO Chen1*
1. College of Civil Engineering,Nanjing Forestry University, Nanjing 210037,China;
2. Jiangsu Branch of CSCEC AECOM Consultants Co.,Ltd.,Nanjing 210017,China
Keywords:
fractal spatial heterogeneity grid method analysis semi-variogram analysis road-region vegetation
Classification number :
S718.5
DOI:
10.3969/j.issn.1000-2006.2014.06.016
Document Code:
A
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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Last Update: 2014-12-31