| 河谷型城市空间跨越式发展及其机制 |
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| 引用本文： | 杨永春.河谷型城市空间跨越式发展及其机制[J].兰州大学学报(自然科学版),2007,43(2):20-24. |
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| 作者姓名： | 杨永春 |
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| 作者单位： | 兰州大学,资源环境学院,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金，兰州大学校科研和教改项目 |
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| 摘 要： | 由于地形限制,河谷型城市需要跳跃式空间扩张.河谷型城市空间跳跃,从时机上一般可分为超前跨越、适时跨越、滞后跨越;从跨越方式上可分为集中式跨越、分散式跨越;从扩散机制上可分为主动式、被动式、主动与被动相结合.河谷型城市在何时、何种条件下,以何种方式和机制实现空间跨越在某种程度上影响城市持续发展.本文以兰州、贵阳、重庆等中国西部河谷型城市为例,研究该类城市空间跨越式发展.
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| 关 键 词： | 河谷型城市 跨越式发展 发展机制 |
| 文章编号： | 0455-2059（2007）02-0020-05 |
| 修稿时间： | 2005-03-232006-06-19 |
Research on the spatial leap-over development and its mechanism in the valley-city |
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| YANG Yong-chun.Research on the spatial leap-over development and its mechanism in the valley-city[J].Journal of Lanzhou University(Natural Science),2007,43(2):20-24. |
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| Authors: | YANG Yong-chun |
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| Institution: | School of Resources and Environmental Sciences, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Because the land in a valley is limited,avalley-city needs the process of spatial expansion (or leaping) to expand out of the valley within a certain development stage.The spatial leap-over development of a valley-city can be classified in three ways:temporally,it can be classified into early leap-over,on-time leap-over and late leap-over;by way of leap-over,it can be classified into concentrated leap-over and dispersed leap-over;according to the expanding mechanism,it can be divided into active leap-over,passive leap-over and a combination of the two.When and how for a valley city to complete the spatial leap-over process will affect the city's sustainable development.In this paper,we took Lanzhou,and other valley cities in West China as examples and focused on the spatial leap-over development process and mechanism of those cities. |
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| Keywords: | valley-city leap-over development developmental mechanism |
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