城市地理

null

展开
  • null
王跃 (1957-), 男, 副教授, 主要从事土地覆盖变化研究。E-mail:wangyuesz@xinhuanet.com

收稿日期: 2004-09-07

  修回日期: 2004-12-15

  网络出版日期: 2005-03-25

基金资助

江苏省教育厅指导项目 (030110715)

null

Expand
  • null

Received date: 2004-09-07

  Revised date: 2004-12-15

  Online published: 2005-03-25

Supported by

Guide Project of Education Bureau of Jiangsu, No.030110715

本文引用格式

王跃, 陈亚莉 . null[J]. 地理学报, 2005 , 60(2) : 229 -236 . DOI: 10.11821/xb200502006

Abstract

Villages and towns, generally spaced 0.5 km apart, are densely distributed in suburban area of Suzhou city. Urbanization has been going on quickly for recent two decades in Suzhou region; the GDP ratio in 2003 is 18% higher than the previous year. Meanwhile, in the suburbs of Suzhou, the villages and small towns have been sprawling gradually in size. However, their spatial distribution form remains unchanged. This study mainly includes the following steps. First, we selected three sampling areas around Suzhou city from satellite images in the year 2000, with 172,145 and 73 villages and small towns in each sampling area, and the densities of villages and towns in sampling areas are 2.2, 4.2 and 3.6/km2 separately. Secondly, based on GIS software, we obtained an outline map of villages and towns in the three sampling areas in vector form, and calculated area for each village or town. We classified these 390 villages and small towns by their areas, and found that the area of most villages is at the range of ten thousand to seventy thousand m2. Thirdly, we extracted pattern information of short and long axes of polygons of villages and towns from each sampling area, and found out the average length is 121 m at short axis and 428 m at long axis in the whole study area. Comparing satellite images of 1986 with those of 2000, and with the aid of vector map, we can find out that the directions of long axes of villages and towns were mainly affected by river course in the past, and influenced obviously by road course in recent decade. Finally, depending on the distance values between villages or towns, we suggest that if the distance is shorter than 400 m, the smaller village should be merged into a bigger village or town nearby.

Key words: null

参考文献

null

文章导航

/