| 基于DMSP/OLS数据的蒙古高原城市群空间特征比较 |
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| 引用本文： | 李胭胭,董晓峰,李宇.基于DMSP/OLS数据的蒙古高原城市群空间特征比较[J].地理空间信息,2021,19(4):84-88. |
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| 作者姓名： | 李胭胭 董晓峰 李宇 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京 100044;北京交通大学建筑与艺术学院,北京 100044;中国科学院地理科学与资源研究所,北京 100101 |
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| 基金项目： | 科技部国家重点研发计划 |
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| 摘 要： | 用经过相互校正、饱和校正和影像间的连续性校正后的DMSP/OLS数据提取城市建成区,对蒙古乌达城市群和呼包鄂城市群的城市扩张进行测度,并对其空间演变特征进行比较分析。结果表明:(1)利用校正后的夜间灯光影像提取的各市建成区面积均有较大幅度的增长,呼包鄂城市群建成区的提取阈值明显大于乌达城市群;(2)乌达城市群区域之间发展极不均衡,呼包鄂城市群区域扩张则较为均衡;(3)两个城市群的土地城市化过程均处于快速发展状态,呼包鄂城市群周边很多小城镇得到逐步发展,乌达城市群区域发展极化效应显著。
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| 关 键 词： | 城市扩张 空间特征 夜间灯光数据 蒙古高原 |
Comparative Study on the Spatial Characteristics of Urban Agglomerations on the Mongolian Plateau Based on DMSP/OLS Data |
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| Abstract: | In this paper,we used DMSP/OLS nighttime lighting data after mutual correction,saturation correction and continuity correction to extract the urban built-up areas.Then,we measured the urban expansion of UD-UA and HBOUA,and analyzed the spatial evolution characteristics.The results show that(1)the built-up areas of each city extracted from the corrected nighttime light images all have a large increase.The extraction threshold of HBO-UA is larger than that of UD-UA.(2)The expansion of HBO-UA is much more balanced than UD-UA.(3)The urbanization processes of the two urban agglomerations are in a rapid development state.Many small towns around HBO-UA have been gradually developed,while the regional polarization of UD-UA is extremely significant. |
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| Keywords: | urban expansion spatial characteristic nighttime light data Mongolian Plateau |
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