LIN Zhiqiang,PENG Shuangyun,HONG Liang,et al.Dynamic Monitoring and Spatial-Temporal Pattern Evolution of Built-up Areas in Central Yunnan Based on Nighttime Light Data[J].Research of Soil and Water Conservation,2021,28(01):265-271.
基于夜光数据的滇中城市建成区动态监测与时空格局演变
- Title:
- Dynamic Monitoring and Spatial-Temporal Pattern Evolution of Built-up Areas in Central Yunnan Based on Nighttime Light Data
- 文章编号:
- 1005-3409(2021)01-0265-07
- Keywords:
- night light remote sensing; central Yunnan urban agglomeration; DMSP/OLS; urban expansion; space-time analysis
- 分类号:
- P237
- 文献标志码:
- A
- 摘要:
- 及时、准确地获取城市群各城市建成区空间信息,监测城市扩张时空变化,对于土地利用方式优化、生态文明建设具有重大意义。基于DMSP/OLS夜间灯光遥感数据,采用“基于统计数据的比较法”,提取1993—2013年滇中城市群的建成区信息,探索20年间滇中城市群建成区的空间格局动态变化。结果表明:(1)20年间,滇中城市群逐渐形成以昆明市为中心的“中心放射状”集聚形态。(2)滇中城市建成区面积在1993—2013年增长了8倍,特别是昆明市建成区的增长尤为显著。(3)不同城市、不同阶段扩张速度与扩张强度存在明显差异:2003年之前,滇中城市处于缓慢增长阶段,2003年之后进入快速增长阶段,2008年之后则增速变缓但呈稳定快速增长趋势。20年间滇中城市群的扩张强度总体上呈现出“先降低—后升高—再降低”的趋势。
- Abstract:
- Timely and accurate acquisition of spatial information of urban built-up areas in urban agglomerations and monitoring of the spatiotemporal changes of urban expansion are of great significance to the optimization of land use methods and the construction of ecological civilization. Based on the DMSP/OLS night light remote sensing data and the comparison method based on statistical data, the built-up area information of central Yunnan urban agglomeration from 1993 to 2013 was extracted to explore the dynamic changes of the spatial pattern of the built-up area of central Yunnan urban agglomeration during the 20 years. The results show that:(1)in the past 20 years, the central Yunnan urban agglomeration had gradually formed a central radial cluster form centered on Kunming;(2)the area of urban built-up areas in central Yunnan had increased 8-fold from 1993 to 2013, especially the growth of built-up areas in Kunming;(3)there were obvious differences between different cities and different stages of expansion speed and expansion intensity: Before 2003, cities in central Yunnan were in a stage of slow growth trend. In the past 20 years, the expansion intensity of central Yunnan urban agglomeration had shown a trend of decreasing first—then increasing—then decreasing.
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备注/Memo
收稿日期:2020-02-28 修回日期:2020-04-17
资助项目:国家自然科学基金“滇中快速城市化过程中土地利用与生态系统服务的动态耦合机制及优化调控模拟研究”(41971369); 国家自然科学基金“快速城市化背景下不透水表面格局与滇池流域水土流失的时空过程耦合效应研究”(41561086); 国家自然科学基金“基于地理景观层次模型和区域统计建模的高分辨率遥感影像多尺度场景分类”(41661082); 国家自然科学基金“城镇化进程中基于蚁群行为规则的滇池流域不透水表面扩张智能体建模与模拟”(41461038)
第一作者:林之强(1996—),男,云南马龙人,硕士研究生,主要从事遥感图像处理与夜光遥感数据应用研究。E-mail:248972265@qq.com
通信作者:彭双云(1978—),男,云南马龙人,博士,副教授,硕士生导师,主要从事遥感影像处理、地理信息系统、流域模拟的研究。E-mail:frankmei@126.com