长株潭城市群核心区城镇景观空间扩张过程定量分析

doi:10.13249/j.cnki.sgs.2012.05.544

摘要/Abstract

摘要：

城镇扩张是城镇化过程最直接的表现,定量研究与揭示城镇空间扩张模式,对理解区域城镇化过程及城镇空间规划具有重要的意义。利用景观扩张指数定量研究了长株潭城市群核心区1993~2006年城镇景观空间演化过程,揭示其城镇景观空间扩张规律。结果表明：① 研究时段内,城镇用地发展经过了凌乱分散的初级发展阶段后正趋向局部紧凑和区域布局合理;② 1993~2006年间,长株潭城市群核心区城镇景观扩张主要是以边缘式增长为主,但是不同的时期,景观扩张表现出相异的空间扩张模式：1993~1996年间,景观扩张方式主要是以边缘式和飞地式为主,这一阶段长株潭城市群核心区处于快速城镇化过程的初级阶段;1996~1998年城镇化过程加快,这一阶段的城镇发展显得凌乱而分散,飞地式扩张明显;1998~2001年处于快速城镇化发展的扩散阶段,以边缘式扩张为主;2001~2006年间,处于快速城镇化的聚合阶段,城镇发展主要以边缘式和填充式为主;③ 长株潭城市群核心区在1993~2006年间,其平均斑块扩张指数和面积加权平均斑块扩张指数都呈上升趋势,表明城镇景观扩张更趋于紧凑。

关键词: 城镇景观, 空间扩张模式, 演化过程, 长株潭城市群

Abstract:

The urban expansion pattern is important to understand the urbanization processes. It is important to reveal and study quantitativly on urban spatial expansion models for understanding the regional urbanization process and the urban spatial planning. In this article, the changes of urban landscape from 1993 to 2006 in the core area of Changsha-Zhuzhou-Xiangtan metroplan areas are quantified using landscape expasion index (LEI). The results indicate: 1) the proportions of urban expansion area in outlying model is 22.38%, 30.26%, 13.74%, 18.68% respectively, those of in edge-expansion model are 60.60%, 52.42%, 66.83%, 63.69% and in infilling model are 17.02%, 17.32%, 19.43%, 17.63% respectively from 1993 to 2006. This shows that after a messy dispersed primary development phase, urban development is more compact and reasonable layout. 2) the urban expasion appears mainly edge-expansion model from 1993 to 2006 in Changsha-Zhuzhou-Xiangtan metroplan areas. However, there are different unban expansion models in four different periods: ① the urban expasion appears edge-expansion and outlying model from 1993 to 1996, which indcates that urbanization is in the early stage of rapid urbanization; ② the urban expasion appears mainly outlying model from 1996 to 1998, which indcates that urban development is messy and dispersion; ③ the urban expasion appears mainly edge-expansion model from 1998 to 2001. This period is the proliferation phase in the rapid development of urbanization; ④ the urban expasion appears edge-expansion and infilling model from 2001 to 2006. This period is the polymeric phase in rapid urbanization. 3) The MEI and AWMEI of Changsha-Zhuzhou-Xiangtan metroplan areas show an ascendant trend, which rises to 34.72 and 30.59 respectively. This means that urban landscape expansion tends to be more compac. 4) The urbanization level of Changsha-Zhuzhou-Xiangtan metroplan areas was 49.69% in 2006. The annual growth rate is 2.57%. A rapid development of urbanization leads to land used for construction increasing and the investment of urban construction expanding ceaselessly. Rapid development of urbanization is an important reason for urban landscape expansion. Another important reason is industrialization development,especially a quick development when Changsha-Zhuzhou-Xiangtan metroplan areas go into “Two Type” society. The proportion of secondary industry is 47%, which is 3.5% higher than the provincial average.

Key words: urban landscape, spatial expansion model, evolution process, Changsha-Zhuzhou-Xiangtan metroplan areas

中图分类号:

Q149/P237

曾永年, 何丽丽, 靳文凭, 吴孔江, 徐艳艳, 于菲菲. 长株潭城市群核心区城镇景观空间扩张过程定量分析[J]. 地理科学, 2012, 32(5): 544-549.

Yong-nian ZENG, Li-li HE, Wen-ping JIN, Kong-jiang WU, Yan-yan XU, Fei-fei YU. Quantitative Analysis of the Urban Expansion Models in Changsha-Zhuzhou-Xiangtan Metroplan Areas[J]. SCIENTIA GEOGRAPHICA SINICA, 2012, 32(5): 544-549.

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LEI区间	1993~1996年		1996~1998年		1998~2001年		2001~2006年
LEI区间	斑块数	斑块比例（%）	斑块数	斑块比例（%）	斑块数	斑块比例（%）	斑块数	斑块比例（%）
0~2	275	18.27	611	28.37	494	19.80	521	22.26
50~52	54	3.59	79	3.67	90	3.61	82	3.50
98~100	90	5.98	91	4.22	158	6.33	134	5.73
合计	419	27.84	781	36.26	742	29.74	737	31.49