【摘要】 以高寒藏区典型城镇玉树市为例,在GIS、RS技术支持下,通过地质灾害、生态敏感性、生物保护和水资源敏感性识别生态源地,根据地形位、土地利用类型和主要交通线构建生态阻力面,基于最小累积阻力模型(MCR)识别生态廊道,进而提出生态安全适应性下玉树市城乡空间发展策略。结果表明:①低、中、高3个不同安全水平格局分别占研究区总面积的34.90%、50.41%、14.64%,适宜城镇发展建设的空间非常有限;②重要生态源地面积4756.5km~2,占全区的30.98%;生态廊道总长度为740.84km,源间生态廊道连通程度低;③在生态安全格局构建的基础上,提出生态安全适应性下玉树市在城乡布局、生态空间布局及产业布局上的发展策略,旨在为高寒藏区城镇空间规划体系提供参考与借鉴。更多还原

【Abstract】 Taking Yushu city, a typical town in the high-altitude Tibetan area, as an example, with the support of GIS and RS technology, the ecological source is identified through geological disasters,ecological sensitivity, biological protection and water sensitivity, according to topography, land use type and main traffic lines. The ecological resistance surface is constructed, and the ecological corridor is identified based on the minimum cumulative resistance model(MCR), and then the urban and rural spatial development strategy of Yushu city under ecological security adaptation is proposed. The results show that:1 low, medium and high three different safety level patterns account for 34.90%, 50.41% and 14.64% of the total area of the study area respectively. The space suitable for urban development and construction is very limited; 2 the important ecological source area is 4756.5 km~2, accounting for 30.98% of the whole area; the total length of the ecological corridor is 740.84 km, and the connectivity of the ecological corridors between the sources is low; 3 based on the construction of the ecological security pattern, the layout of the urban and rural areas and the ecological space of Yushu city under the ecological security adaptation are proposed. The development strategy of industrial layout aims to provide reference for the urban spatial planning system of the high-cold Tibetan areas.更多还原