地理科学进展 ›› 2008, Vol. 27 ›› Issue (4): 122-128.doi: 10.11820/dlkxjz.2008.04.018

• 交通运输地理 • 上一篇    

道路影响域的界定及其空间分异规律 ———以纵向岭谷区为例

刘世梁,温敏霞,崔保山,富伟,杨敏   

  1. 北京师范大学环境学院水环境模拟国家重点实验室,北京100875
  • 收稿日期:2008-02-01 修回日期:2008-06-01 出版日期:2008-07-25 发布日期:2008-07-25
  • 作者简介:刘世梁(1976- ),男,副教授,博士生导师,主要从事景观生态学和土地利用的研究,发表论文50 余篇. E- mail: shiliangliu@163.com
  • 基金资助:

    国家重点基础研究发展计划(973)项目(2003CB415104)和国家自然科学基金项目(40501067).

Definition and Spatial Differ entiation of Road- effect Zone: A Case Study in Longitudinal Range- Gorge Region

LIU Shiliang,WEN Minxia,CUI Baoshan,FU Wei,YANG Min   

  1. School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875
  • Received:2008-02-01 Revised:2008-06-01 Online:2008-07-25 Published:2008-07-25

摘要:

以纵向岭谷区道路网络为研究对象,考虑地形等相关因子,利用GIS 图形叠加分析得到区域道路影响域的范围,进一步统计道路影响域面积与区域面积的比例,探寻道路对区域影响的空间分异规律,并分析其与道路密度、人口密度、村庄数目、生态承载力、平均海拔高度等因素的相关性。结果表明:纵向岭谷区道路不同等级具有不 同的影响域范围,区域道路影响的空间分布存在差异,由省会昆明逐渐向周边辐射减小,红河流域高于澜沧江流域和怒江流域。在纵向岭谷区东部、北部、西南部部分地区道路影响呈现显著的空间集聚效应。影响因子的相关性分析表明,道路影响域比例与平均海拔高度不相关,与道路密度、人口密度、村庄数目、生态承载力相关显著。

关键词: 道路影响域, 空间分析, 相关性分析, 纵向岭谷区

Abstract:

Taking road network in Longitudinal Range- Gorge Region (LRGR) as an case study, we got the bound of road - effect zone through overlay method of GIS considering its influencing factors. Then we calculated the percentage of road- effect zone area in certain region and study the spatial variability in LRGR. Further, road density, population density, village number, ecological capacity and average altitude were selected to analyze their relationship with road effect zone. The results showed that different road types had various road- effect zones. Spatial contribution of road effect showed a great regional difference. The effect zone decreased from Kunming to region around. Honghe River Valley had a higher value than Lancang and Nujiang River Valley. In LRGR, there showed significant spatial convergence region in east, north and south - west of LRGR. Correlation analysis showed that there existed significant correlation between road- effect proportion and road density, population density, village number, ecological capacity while no correlation with average altitude.

Key words: correlation analysis, LRGR, road- effect zone, spatial autocorrelation