| 长沙城市形态与用地类型的时空演化特征 |
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| 引用本文： | 陈群元,尹长林,陈光辉. 长沙城市形态与用地类型的时空演化特征[J]. 地理科学, 2007, 27(2): 273-280. DOI: 10.13249/j.cnki.sgs.2007.02.273 |
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| 作者姓名： | 陈群元 尹长林 陈光辉 |
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| 作者单位： | 东北师范大学城市与环境科学学院,吉林,长春,130024;长沙市规划信息服务中心,湖南,长沙,410013;长沙市规划信息服务中心,湖南,长沙,410013;中南大学信息物理学院,湖南,长沙,410083 |
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| 基金项目： | 国家自然科学基金，湖南省长沙市规划信息服务中心项目 |
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| 摘 要： | 运用GIS技术与高级编程方法提取了长沙市1979、1996年、2003年的城市用地现状图的数据信息,借助最小二乘技术,通过幂指数拟合,计算出了各年份的城市形态与用地结构的分维数,并探讨了长沙城市分形演化的机理和城市形态演化的信息熵。通过对分维数的时空变化所包括信息的分析,发现长沙城市形态及各职能类用地存在明显的分形特征,且各类职能用地的分维小于城市形态的整体分维,符合理论上推断的城市分维包容原理,整个城市形态朝着混沌向有序渐趋优化演化,但同时也存在绿化用地与对外交通用地发展不够完善的问题。
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| 关 键 词： | 城市形态 时空演化 分形理论 长沙 |
| 文章编号： | 1000-0690（2007）02-0273-08 |
| 收稿时间： | 2005-12-18 |
| 修稿时间： | 2005-12-182006-07-16 |
Spatial-temporal Evolution of Urban Morphology and Land Use Sorts in Changsha |
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| CHEN Qun-Yuan,YIN Chang-Lin,CHEN Guang-Hui. Spatial-temporal Evolution of Urban Morphology and Land Use Sorts in Changsha[J]. Scientia Geographica Sinica, 2007, 27(2): 273-280. DOI: 10.13249/j.cnki.sgs.2007.02.273 |
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| Authors: | CHEN Qun-Yuan YIN Chang-Lin CHEN Guang-Hui |
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| Affiliation: | 1. College of Urban and Environmental Sciences of Northeast Normal University, Changchun, Jilin 130024;2. Changsha Planning Information Service Center, Changsha, Hunan 410013;3. College of Informational and Physical Sciences of Central South University, Changsha, Hunan 410083 |
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| Abstract: | The history and the present situation of study on urban morphology and land use structure based on the fractal theory are briefly introduced and reviewed.The model and its meanings of the fractal theory on urban morphology research is also introduced and explained.Taking Changsha as an example,the authors draw 1979,1996,2003's fractal data message of its urban morphology by writing compute program and using ArcGIS soft,and calculate the fractal dimensions of its urban morphology and land use structure of different periods.The end shows that the tendency of fractal evolution gradually changing from the chaos to the order has been existing in urban morphology and land use structure in Changsha,and its causes of this phenomenon are mainly made for the development of urban economy,the innovation of regionalism and the modification of city planning.At the same time a few of questions in land structure also have been discovered,including that the area of the green land and the traffic land is smaller and their distributions are also more centralized.In this study,the dimension inclusion theory is confirmed,which means all the dimensions of different land use sorts are smaller than that of the whole urban morphology.Some significance about the study to Changsha urban planning also has been put forward. |
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| Keywords: | urban morphology spatial-temporal evolution fractal theory Changsha |
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