地理研究 ›› 2010, Vol. 29 ›› Issue (3): 440-448.doi: 10.11821/yj2010030007

• 土地资源与利用 • 上一篇    下一篇

平行岭谷区建设用地格局演变扩展的通道与低山阻隔效应

李阳兵1,2, 张阳阳1   

  1. 1. 重庆师范大学地理科学学院,重庆 400047;
    2. 贵州师范大学地理与环境科学学院,贵阳 550001
  • 收稿日期:2009-01-19 修回日期:2009-05-25 出版日期:2010-03-20 发布日期:2010-03-20
  • 作者简介:李阳兵(1968-),男,重庆潼南人,博士后,教授。主要研究领域为土地利用与生态过程. E-mail: li-yapin@sohu.com
  • 基金资助:

    重庆市教委项目(KT080818)、重庆师范大学校级基金项目(08XLZ12)

Effects of obstruction and corridor on the construction land pattern evolving in paralleled ridge-valley area

LI Yang-bing1,2, ZHANG Yang-yang1   

  1. 1. College of Geography Science, Chongqing Normal University, Chongqing 400047, China;
    2. School of Geographic and Environmental Sciences, Guizhou Normal University,Guiyang 550001,China
  • Received:2009-01-19 Revised:2009-05-25 Online:2010-03-20 Published:2010-03-20

摘要:

以位于四川盆地东部平行岭谷区低山丘陵地区的重庆市主城区为例,将研究区平行岭谷形成的近南北向低山条带分成5个区,以1978年MSS、1986年、1995年、2000年TM和2006年中巴影像数据为基础数据源,通过对比分析研究区各分区条带内城镇用地格局演变模式和分区条带中城镇用地面积所占比例,探讨建设用地格局扩展演变的通道与低山阻隔效应。1978~2000年研究区除歌乐山-铜锣山之间外其余各区相对缓慢的城镇化过程,较充分地体现出了低山的阻隔效应。2000~2006年时段随研究区绕城高速、横穿南北向条带低山的隧道、跨江大桥和多条辐射状高速公路的逐步完善,歌乐山以西、铜锣山以东的城镇动态扩展度分别为601.32%、143.22%,人为通道对研究区建设用地的跳跃式空间扩散起着显著作用,充分体现了道路网络的通道效应。进一步分析研究区通道影响土地利用变化的可能范围,对研究区建设用地格局优化很有必要。

关键词: 平行岭谷区, 建设用地, 通道, 低山阻隔效应

Abstract:

The paralleled ridge-valley area of the Sichuan basin have quite important ecological status, but its land use pattern of mountain and hills has been changed by the urban sprawl of Chongqing city in the past ten years. In this paper, the Chongqing Urban Section located in the eastern paralleled ridge-valley area was chosen as an example, and was divided into five subareas according to the northern-southern low mountains patterns to explore how the channels and low mountain obstruct effect influence the construction land pattern expansion and evolution, through comparing and analyzing the pattern of urban land use evolution and the area proportion of urban land of all subareas. The image data of MSS in 1978, TM in 1986, 1995, 2000 and CBERS in 2006 were chosen as a datum source. In 1978-2000, the relatively slow process of urbanization in subareas except Geleshan-Tongluoshan reflects the low mountain obstructive effect fully. In 2000-2006, with the construction of belt freeway, the tunnels across north-south of low-mountain, the river-spanning bridges and the gradual improvement of other radialized highways, urban dynamic expansion degree of the west of the Geleshan and the east of the Tongluoshan is 601.32%, and 143.22%, respectively. Therefore, man-made channels play a significant role in the rapid expansion processes of the construction land, and there is obvious channel effect of the traffic network is in the study area. Furthermore, it is very necessary to do further research about the possible scope of land-use change affected by channels in order to optimize patterns of construction land in the study area. The research results of this paper could provide a basis for the optimization of land use pattern and man-land relationship of the study area.

Key words: paralleled ridge-valley area, construction land, corridor, obstructive effects of low mountains