岩溶山地城市扩展空间差异的地形效应
收稿日期: 2008-07-01
修回日期: 2008-12-01
网络出版日期: 2009-01-24
基金资助
教育部"新世纪优秀人才支持计划资助"项目(NCET-05-0819);黔科合J 字2007[2154 号].
The Effect of Karst Mountain Physiognomy on Spatial Process of Urbanization in Guiyang City
Received date: 2008-07-01
Revised date: 2008-12-01
Online published: 2009-01-24
利用贵阳市1976 年MSS 影像,1986 年、1996 年TM 影像,2006 年CBERS 影像和1∶5 万DEM 等,对喀斯特 山地地貌背景及地形条件与贵阳城市化空间过程的时空分异特征的相互关系进行深入分析。土地扩展集中指数表 明地貌分布直接影响城市在不同方向上的扩展分布, 建设用地的扩展主要发生在起伏度小于30m 的平缓地形区; 对比贵阳城市扩展斑块,新生斑块密度整体上要高于延展斑块密度;城市几何中心轨迹呈西北—东南来回移动。这 说明贵阳城市扩展整体受地形条件影响较大,向盆周山丘缓坡→盆地外围的岩溶山地垭口、谷地、小型山间盆地坝 子和岩溶丘原面拓展,城市扩展不能连片发展,只能在较为平缓的地带分散扩展,各分区城市扩展强度最高值均在 5~15km 的缓冲区内。同时城市空间放射状指数表明城市形态虽然狭长,但城市化过程中紧凑度水平逐渐升高。
李卫海,李阳兵,周焱,丹文丽 . 岩溶山地城市扩展空间差异的地形效应[J]. 地理科学进展, 2009 , 28(1) : 85 -92 . DOI: 10.11820/dlkxjz.2009.01.012
Taking Guiyang as an example, a thorough analysis was carried out to reveal the relations of the karst mountain physiognomy and the spatial-temporal distribution characteristic of the spatial process of urban expansion in Guiyang, based on the MSS image of Guiyang in 1976, Landsat images in 1986, 1996 and CBERS image in 2006, as well as geomorphologic characteristics, 1∶50,000 DEM. Some analytical indexes such as relief degree of land surface, concentration index of land expansion, urban spatial radial shape index, etc. were introduced to describe the spatial differentiation of urban land expansion. The results show that the karst mountain physiognomy has serious restrictions to urban expansion of Guiyang. Concentration index of land expansion shows that the topographic distribution has direct impact on the expansion of distribution of landscape of the city in different directions. The expansion of construction land was mainly generated in flat terrain of the area where relief degree of land surface was less than 30 m. Comparsion of all the expansion patches of Guiyang city indicated that the density of new patches was higher than the density of extended patches. The geometric centers of urban area in Guiyang city has been transforming from northwest to southeast. First, the expansion of the city mainly generated along the gentle slope around the basin, and then the expansion generated along the karst mountain pass, valley land and small intermountain flat out of the basin; the expansion of the city was dispersed in flat area; and the maximum expansion intensity of the city was in 5~15km buffer in various partitions.
Key words: Guiyang; physiognomy; the karst mountain physiognomy; urban expansion
[1] Welch R. Monitoring urban population and energy utilization patterns from satellite data. Remote Sensing of Environment, 1980,9:1~9.
[2] Bounfour A,Lambin E.How valuable is remotely sensed inform ation?The case of tropical deforestation modelling. Space Policy,1999,15(3):149~158.
[3] Barry N. Haacka, Ann Rafter. Urban growth analysis and modeling in the Kathmandu Valley, Nepal. Habitat International, 2006,30(4):1056~1065.
[4] Weber C,Puissant A.Urbanization pressure and modeling of urban growth:Example of the Tunis metropolitan area. Remote Sensing of Environment,2003,86:341~352.
[5] Shu Li Huang, Wei Chieh Kao, Chun Lin Lee. Energetic mechanisms and development of an urban landscape system. Ecological Modeling,2006,201(3):495~506.
[6] 黎夏,叶嘉安. 利用遥感监测和分析珠江三角洲的城市 扩张过程———以东莞市为例. 地理研究,1997,16 (4):56~ 62.
[7] Xiao Jieying, Shen Yanjun, Ge Jingfeng, et al. Evaluating urban expansion and land use change in Shijiazhuang, China, by using GIS and remote sensing. Landscape and Urban Planning, 2006, 75(1):69~80.
[8] 马荣华,陈雯,陈小卉. 常熟市城镇用地扩展分析. 地理 学报,2004,59(3):418~426.
[9] 匡文慧,张树文,张养贞. 1990 年以来长春市土地利用 空间扩张机理分析. 地理学报,2005,60(5):841~850.
[10] 刘盛和, 吴传钧, 沈洪泉. 基于GIS 的北京城市土地利 用扩展模式. 地理学报,2000,55(4):407~416.
[11] 朴妍, 马克明. 不同规模城镇的扩展过程分析—以北京 为例. 生态学报,2007,27(5):2136~2144.
[12] Qi Ye, Mark H, Xu Ming, et al. Evolving core-periphery interactions in a rapidly expanding urban landscape: The case of Beijing. Landscape Ecology, 2004,19(4): 375~388.
[13] Yichun Xie, Chuanglin Fang, George C.S. Lin. Tempo - spatial patterns of land use changes and urban development in globalizing China: A study of Beijing. Sensors, 2007, 7, 2881~2907.
[14] 吴宏安, 蒋建军, 周杰. 西安城市扩张及其驱动力分析. 地理学报,2005,60(1):143~150.
[15] 侯英雨, 何延波. 利用TM 数据监测岩溶山区城市土地 利用变化. 地理学与国土研究,2001,17(3)22~25.
[16] 周晓芳,周永章. 喀斯特城市空间结构研究:以贵州省为 例. 热带地理,2008,28,(3):212~217.
[17] 薛东前, 王传胜. 无锡城市用地扩展的时空特征与趋势 分析. 资源科学,2003,25(1):9~14.
[18] Xu Chi, Liu Maosong, Zhang Cheng, et al. The spatiotemporal dynamics of rapid urban growth in the Nanjing metropolitan region of China. Landscape Ecol.,2007,22:925~937.
[19] 苏维词. 贵阳城市土地利用变化及其环境效应. 地理科 学,2000,20(5):462~468.
[20] 杨永春. 河谷型城市空间跨越式发展及其机制. 兰州大 学学报(自然科学版),2007,43(3):20~24.
/
〈 | 〉 |