摘要
青藏高原属于我国典型的生态环境脆弱地区,在国家主体功能区划中属限制开发区和禁止开发区,同时又是我国贫困人口的集中分布地区,面临着保障生态安全与发展经济的双重压力.因此,以主体功能区的指导思想"因地制宜"的优化区域城镇空间结构,引导与生态环境相适应的城镇发展模式,缩小区域空间差距,对促进区域一体化及实现可持续发展具有重要意义.以青藏高原东缘的甘南藏族自治州为例,利用GIS定量分析技术,探讨在面临资源环境等多重约束条件下,高原城镇的空间布局特征以及空间功能组织的优化途径.结果表明:甘南城镇的发展要在维护甘南生态服务功能的前提下,以促进农牧区人口城镇化转移为主线,以基础设施建设为重点,走特色化、集约化的城镇化道路;在城镇空间布局上,要以现状的"土"字形布局为基础,强化北部的"十"字形骨架,完善南部的"一"字形骨架,最终形成布局合理的城镇空间结构,为民族地区人民生活水平提高和生态环境、经济社会的持续发展提供坚固的平台,实现社会和谐发展.
The ecological environment in the Tibetan Plateau is typical vulnerable,which has been set as a restricted and prohibited developing region in the main function division in China.At the same time,it is a region concentrated with poor people,facing the pressures of both protecting ecological environment and developing economy.Therefore,it is of great significance to promote regional integration and sustainable development,and to optimize regional spatial structure,in order to guide city and town＇s development acclimatized to ecological environment and to narrow the regional gaps,following the ideology of the main functional areas.Taking the Gannan Tibetan Autonomous Prefecture as an example,using GIS technology,the spatial distribution characteristics of highland towns and how to optimize spatial functional organization under multiple constraint conditions are discussed in this paper.For facilitating the urbanization of agricultural and pastoral population and stressing infrastructure construction,it is believed that the development of the towns in the prefecture should follow the urbanization of distinction and intensification under the premise of maintenance of ecosystem services.In the urban space,based on ＂ shaped layout,it is necessary to strengthen the northern ＂ shaped frame and to perfect the southern ＂ shaped frame,and then form a rational layout of urban spatial structure,in order to provide a solid platform for improving the living standards and the ecological environment in the ethnic areas.Thus,economic and social sustainable development,together with a harmonious society,will be achieved in the prefecture.
出处
《冰川冻土》
CSCD
北大核心
2011年第6期1427-1434,共8页
Journal of Glaciology and Geocryology
基金
国家自然科学基金项目(40971291)
国家社科基金项目(10CYJ014)资助
关键词
生态脆弱区
城镇体系空间结构
甘南藏族自治州
ecology-vulnerable regions
spatial structure of urban system
Gannan Tibetan Autonomous Prefecture
