石羊河流域地区城镇空间扩展格局演化
作者简介:石培基(1961-),男,甘肃临洮人,教授,博士生导师,研究方向为城市与区域发展研究。E-mail:shipj@nwnu.edu.cn
收稿日期: 2011-09-12
要求修回日期: 2011-12-01
网络出版日期: 2012-07-20
基金资助
国家自然科学基金项目(40971078)资助
Urban Spatial Expansion Process and Pattern in Shiyang River Basin
Received date: 2011-09-12
Request revised date: 2011-12-01
Online published: 2012-07-20
Copyright
石培基 , 王祖静 , 李巍 . 石羊河流域地区城镇空间扩展格局演化[J]. 地理科学, 2012 , 32(7) : 840 -845 . DOI: 10.13249/j.cnki.sgs.2012.07.840
Urban spatial expansion is an inevitable result of regional development. It is important to find out the expansion mechanism so that we can control the region in harmony. Based on the land use data of Shiyang River Basin, combined with a variety of models including lacunarity index, fractal correlation coefficient, expansion intensity index, spatial association measurements and semivarigram, the investigation of the process and pattern of urban spatial expansion from space and time scales was analyzed in the paper. The results showed a urban spatial expansion in Shiyang River Basin in 20 years. And it concentrated along the Shiyang River , Danla Highway 045 and State Road NO.312. There is a little change of township land. It expanded with "point - axis" mode significantly. That becomes the unique expansion of inland cities. And a reference about Shiyang River Basin of various regional planning was provided in the article.
Fig. 1 The spatial distribution of urban land in the Shiyang River Basin area in 1986 and 2006图1 1986和2006年石羊河流域城镇建设用地分布 |
Fig. 2 Theoretical variance of variogram model图2 变差函数理论方差 |
Fig. 3 Local lacunarity analysis of urban space expansion in the study area in 1986-2000 and 2000-2006图3 1986~2000、2000~2006年流域城镇扩展局部间隙度 |
Fig. 4 The global lacunarity of urban space expansion in the study area in 1986-2000 and 2000-2006图4 1986~2000、2000~2006年流域全局间隙度 |
Fig. 5 Hot spots of urban expansion pattern in study area图5 1986~2000、2000~2006年流域城镇扩展格局演化 |
Table 1 Getis-Ord General G of urban expansion intensity in the core area表1 流域扩展强度的Getis-Ord General G |
年代 (年) | 1986~2000 | 2000~2006 |
---|---|---|
观测值G(d) | 0.000022 | 0.000028 |
期望值E(d) | 0.000019 | 0.000019 |
Zscore | 1.385009 | 7.450191 |
Fig. 6 Variogram evolution of urbanization(a1,b1 and c1: variogram map; a2,b2 and c2: interpolation map)图6 流域城镇化变差函数演化 |
Table 2 The parameter s of variogram model on spatial pattern of urbanization表2 流域城镇化格局变差函数拟合参数 |
年份(年) | 1986 | 2000 | 2006 |
---|---|---|---|
变程 a | 10 | 9.9 | 9.3 |
基台值 C+C0 | 95.7 | 96.6 | 43.61 |
块金值 C0 | 12.9 | 12.5 | 8.9 |
块金系数 C0/(C+C0) | 0.865 | 0.871 | 0.796 |
拟合模型 Model | Spherical | Spherical | Spherical |
决定系数 R2 | 0.622 | 0.627 | 0.563 |
The authors have declared that no competing interests exist.
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