青藏高原少数民族聚居地区城镇用地扩展时空演变分析——以青海省海东市为例  

Study on spatial-temporal evaluation characteristics of urban land expansion for minority nationality regions in Qinghai-Tibet Plateau: taking Haidong city in Qinghai province as an example

作　　者：任君 张福存 王琬琪 郭婧 周伟[2] 蒋玉祥 郭肖 REN Jun;ZHANG Fucun;WANG Wanqi;GUO Jing;ZHOU Wei;JIANG Yuxiang;GUO Xiao(Graduate school of Qinghai University,Xining 810016,China;School of Land Science and Technology,China University of Geosciences,Beijing 100083,China;School of Civil Engineering,Qinghai University,Xining 810016,China;Xining Institute of Surveying and Mapping,Xining 810010,China;Research department of Ecological Environment,Qinghai Academy of Social Sciences,Xining 810000,China;Northwest Institute of Plateau Biology,Chinese Academy of Science,Key Laboratory of restoration ecology of cold area in Qinghai Province,Xining 810008,China)

机构地区：[1]青海大学研究生院,青海西宁810016 [2]中国地质大学(北京)土地科学技术学院,北京100083 [3]青海大学土木工程学院,青海西宁810016 [4]西宁市测绘院,青海西宁810010 [5]青海省社会科学院生态环境研究所,青海西宁810000 [6]中国科学院西北高原生物研究所青海省寒区恢复生态学重点实验室,青海西宁810008

出　　处：《测绘通报》2021年第1期71-76,77,共7页Bulletin of Surveying and Mapping

基　　金：青海大学中青年社科基金(2018-QSY-4);国家社会科学基金青年项目(16CJY012);青海省社科规划年度项目青年项目(20052)。

摘　　要：基于多期遥感影像数据,采用GIS空间叠加分析技术,选择扩展强度指数、紧凑度、分形维数、重心转移指数和扩展方位指数,定量分析了海东市1990—2016年间城镇用地扩展时空分异特征。研究结果表明,海东市城镇用地持续增加,扩展强度呈现先降低后升高的中速持续扩展趋势,城镇从空间无序转向空间协同发展;城镇用地紧凑度持续下降,分形维数持续增大,城镇用地不规则性增加;城镇用地重心转移呈现出"有序—无序—有序"的特征,城镇用地扩展方位分异特征明显,并表现出单翼、双翼和扇形多种扩展模式并存的特点。在海东市城镇用地扩展中,高原河谷地形为自然制约因素,园区新区的设立为主要路径,政策诱变为主要动力,重大基础设施建设为动力保障。This paper selects the expansion intensity index,compactness,fractal dimension,center of gravity transfer index and orientation proportion index using GIS spatial overlay analysis technology to analyze quantitatively the spatial-temporal differentiation of urban land expansion of Haidong city based on the remote sensing image data from 1990 to 2016. The results show that,the urban land area continuously increases,the compactness continuously declines but the fractal dimension continuously increases,the center of gravity mainly transfers to the west and southeast,and the center of gravity of urban land indicates obvious spatial characteristics and shows an tendency of "orderly-disorderly-orderly ",the urban transfers from spatial imbalance to the coordinated development.Moreover,the orientation proportion index shows obvious spatial orientation differentiation characteristics,and the urban land expansion shows coexisting characteristic of single-wing,double-wing,and fan-shaped pattern. Lastly,during the process of urban land expansion of Haidong city,the terrain of the plateau river valley is a natural constraint,the establishment of the new zone and industrial park is the main route,the policy mutation is the main driving force,and the construction of major infrastructure is the driving force guarantee.

关 键 词：城镇扩展 城镇用地 遥感 时空演变 青藏高原 

分 类 号：P208[天文地球—地图制图学与地理信息工程]