摘要
为研究江西省城市扩张的基本特征以及引起城市扩张的驱动因素,以夜光遥感影像为数据源,运用阈值二分法对江西省建成区范围进行提取,采用灯光指数、城市空间扩展相关指数、重心偏移指数及灰色关联模型等方法对江西省2003—2018年的城市扩张情况进行研究.结果表明:灯光数据提取建成区面积误差在2%以内,截至2018年,建成区面积扩张了2.62倍;城市化呈现“北高南低”的空间格局,区域内部城市化水平存在差异;城市重心位于宜春市,沿南北方向波动变化,扩张模式由单核扩张转为多核心扩张;主要驱动因子按关联度大小分别为人口密度(0.83)、城镇居民可支配收入(0.68)和第三产业增加值(0.56).采用夜间灯光数据对江西省城市扩张进行分析结果较好,为江西省城市规划建设提供参考,同时可为其他区域城市化发展研究提供方法借鉴与数据支持.
In order to study the basic characteristics of urban expansion in Jiangxi Province and the driving factors behind,with luminous remote sensing image as data sources,the threshold dichotomy is used for data extraction of the urban district of Jiangxi province,and by means of light index,relevant indices of urban space expansion,the barycenter offset index and methods of grey correlation model are employed to find out about the urban expansion of Jiangxi province in 2003—2018.The results show that the error of light data extraction for built-up area is less than 2%.By 2018,the built-up area has expanded by 2.62 times.Urbanization shows a spatial pattern of“high in the north and low in the south”,and there are differences in urbanization levels within the region.The center of gravity of the city is located in Yichun City,which fluctuates along the north-south direction,and the expansion mode changes from single-core expansion to multi-core expansion.The main driving factors in descending order of relevance were population density(0.83),disposable income of urban residents(0.68)and added value of the tertiary industry(0.56).The results of urban expansion analysis using night light data in Jiangxi Province are good,which can provide reference for urban planning and construction in Jiangxi Province,and also provide method reference and data support for urbanization development research of other districts.
作者
彭嘉琪
陈竹安
邹梓龙
洪志强
曾令权
PENG Jiaqi;CHEN Zhuan;ZOU Zilong;HONG Zhiqiang;ZENG Lingquan(Faculty of Geomatics, East China University of Technology, Nanchang, Jiangxi 330013, China;Jiangxi Province Key Laboratory of Digital Land, Nanchang, Jiangxi 330013, China;Nanchang Institute of Science and Technology, Nanchang, Jiangxi 330108,China;Guangzhou Panyu Polytechnic, Guangzhou, Guangdong 511483,China)
出处
《内江师范学院学报》
CAS
2021年第8期70-76,共7页
Journal of Neijiang Normal University
基金
国家自然科学基金项目(51708098)
江西省教育厅课题项目(GJJ180396)
江西省数字国土重点实验室开放研究基金项目(DLLJ201814)
广东省科技创新战略专项资金项目(pdjh2020a1123)。
