| 京津冀城市群1990—2015年城区时空扩展监测与分析 |
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| 引用本文： | 宁晓刚,王浩,林祥国,曹银璇,杜军.京津冀城市群1990—2015年城区时空扩展监测与分析[J].测绘学报,2018,47(9):1207-1215. |
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| 作者姓名： | 宁晓刚 王浩 林祥国 曹银璇 杜军 |
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| 作者单位： | 1. 中国测绘科学研究院, 北京 100830;2. 河南省科学院地理研究所, 河南 郑州 450052 |
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| 基金项目： | 国家重点研发计划（2016YFE0205300）；国家自然科学基金（41401513；41371405）；中央级公益性科研院所基本科研业务费（7771803；777161103） |
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| 摘 要： | 城区作为城镇化表征的重要指标，在城镇化时空扩展分析中有着重要的意义。然而，目前城区边界存在相关概念混杂导致对其认识缺乏统一、划定标准和数据来源缺乏一致性、遥感监测所用影像分辨率较低、以建设用地（不透水面）替代城区等问题。针对上述问题，参考住房和城乡建设部的建成区概念和城区地域分布范围，充分挖掘高分辨率遥感影像展现的城市景观和形态等空间可视化特征，从城市实际建设完成情况出发，本文提出了基于高分辨率影像和地理信息资料辅助的城区半自动化提取方法。获取了京津冀城市群153个县级以上城市的1990、2002、2015年的遥感影像、多元地理信息参考资料，开展了该区域的城区边界提取，并从时空扩展过程、城区空间形态及结构变化、城区扩展协调性、城区扩展占用土地类型4个方面对京津冀城市群1/4世纪的城镇化过程进行了统计分析。提出的技术方法和监测分析结果对于城镇化发展监测和城市规划实施评估具有重要的参考价值。
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| 关 键 词： | 城区边界 城区 城市扩展 京津冀城市群 地理国情监测 |
| 收稿时间： | 2017-07-17 |
| 修稿时间： | 2018-03-21 |
Spatio-temporal Urban Sprawl Monitoring and Analysis over Beijing-Tianjin-Hebei Urban Agglomeration during 1990—2015 |
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| NING Xiaogang,WANG Hao,LIN Xiangguo,CAO Yinxuan,DU Jun.Spatio-temporal Urban Sprawl Monitoring and Analysis over Beijing-Tianjin-Hebei Urban Agglomeration during 1990—2015[J].Acta Geodaetica et Cartographica Sinica,2018,47(9):1207-1215. |
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| Authors: | NING Xiaogang WANG Hao LIN Xiangguo CAO Yinxuan DU Jun |
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| Institution: | 1. Chinese Academy of Surveying and Mapping, Beijing 100830, China;2. Institute of Geographical Sciences, Henan Academy of Sciences, Zhengzhou 450052, China |
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| Abstract: | As an important indicator to access urbanization,the definition of urban boundary is of great importance of spatial-temporal urban sprawl monitoring and analysis.However,there are problems existed in urban boundary extraction currently,including lack of unified delimitation standards,inconsistent data sources,low or inadequate RS image resolutions,using construction land or impervious surfaces to replace urban area,etc.To solve the above-mentioned problems,a semi-automatic urban boundary extraction method based on high-resolution RS images and fundamental geoinformation data is proposed in this paper,which is referred to the concept of built-up area and the geographical distribution of urban area,and fully applied the spatial visualization characteristics of urban landscape and pattern from remote sensing images.By extracting the urban boundaries of 153 cities of Beijing-Tianjin-Hebei region in 1990,2002 and 2015 and their fundamental geoinformation data,the urbanization process in a quarter century of Beijing-Tianjin-Hebei is analyzed from the aspects of urban spatial-temporal sprawl process,urban spatial landscape and pattern changes,urban sprawl coordination,and occupied land types.The method proposed in the paper and the analysis results of urbanization process provide a great reference for urbanization monitoring and urban planning implementation and evaluation. |
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