石羊河流域城镇化用地空间扩展分析

发布时间：2017-12-31 18:36

本文关键词：石羊河流域城镇化用地空间扩展分析　出处：《冰川冻土》2017年04期 　论文类型：期刊论文

【摘要】：石羊河流域是流域经济社会可持续发展研究的重点区域之一。为找出流域城镇化用地空间扩展的机理,从社会经济、区位交通、生态约束出发,开展了城镇空间扩展用地评价与预测研究。首先,利用改进的土地适宜性评价方法,找出城镇扩展可能性和各乡镇适宜性高值区的空间格局,发现其主要位于流域中部绿洲生态功能区,沿G30高速公路和312国道分布,以县城/城区为中心呈星形扩散。然后,利用经过精度检验的土地转化模型(LTM),在适宜性评价因子的基础上模拟城镇扩张。结果表明:凉州区和金川区为流域发展的"两核",312国道天祝至永昌段、211省道凉州至民勤段、212省道永昌至金川段为流域发展的"三带"。上述结果可为政府制定流域发展规划提供参考。
[Abstract]:Shiyang River Basin is one of the key areas in the study of sustainable economic and social development. In order to find out the mechanism of spatial expansion of urbanization land in the basin, it starts from social economy, location traffic and ecological constraints. Firstly, using the improved land suitability evaluation method to find out the possibility of urban expansion and the spatial pattern of high-value areas of township suitability. It is found that it is mainly located in the oasis ecological function area in the middle of the basin. It is distributed along G30 Expressway and 312 National Highway, with the county / urban area as the center of star diffusion. Then. Based on the suitability evaluation factor, the land transformation model is used to simulate urban expansion. The results show that Liangzhou District and Jinchuan District are the "two cores" of watershed development. The section from Yongchang to Jinchuan is the "three zones" of watershed development. The above results can be used as a reference for the government to formulate the watershed development plan.
【作者单位】：兰州文理学院;中国科学院成都文献情报中心;中国科学院兰州文献情报中心;
【基金】：甘肃省高等学校科研项目(2016B-125) 国家自然科学基金项目(41171116)资助
【分类号】：F299.27
【正文快照】： 0引言城镇扩展是区域发展的必然趋势,城镇化使得大量耕地转化为城乡建设用地,东部沿海地区在改革开放的30多年中快速城镇化。学者们已经对其扩展特征进行了大量研究[1-5],包括引入国外研究方法[6-9],发现区位条件是影响地区城镇化的重要因素[10-11],制约着资源的供给和人才的

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