夜间灯光数据驱动的成渝城市群空间形成过程重建及分析
发布时间：2018-08-01 13:51
【摘要】：2016年4月发布的《成渝城市群发展规划》首次正式确定了成渝城市群的内涵和具体边界,重建成渝城市群的形成过程,有利于把握未来发展趋势,并合理优化与调整其发展过程。在重建技术方面,对DMSP/OLS夜间灯光数据传统的不变目标区域校正法加以改进,将成渝城市群2013年城市市区范围内的全部像元加入校正模型的拟合中,设计了统计数据的校正规则,再通过二分比较法较好地恢复了成渝城市群内各城市建成区的时序空间信息。提取面积与统计面积总体平均相对误差为-0.38%,利用高分辨率Google Earth图像验证的建成区提取准确率达到98.29%,相比其他研究结果,经方法改进后的提取结果精度高且稳定。在结果分析方面,基于提取结果展开对城市群建成区重心转移过程与城市聚合过程的深层次研究,剖析了城市群的内部格局与时空变化特征。分析表明,成渝城市群的聚合情况与《成渝城市群发展规划》高度吻合,城市群已进入快速发育阶段,随着区域差异的持续扩大,成都、重庆都市圈的核心地位逐渐形成,而重庆的发展态势稍好。
[Abstract]:The "Chengdu-Chongqing Urban agglomeration Development Plan", issued in April 2016, formally defines the connotation and concrete boundary of Chengdu-Chongqing urban agglomeration for the first time, and reconstructs the forming process of Chengdu-Chongqing urban agglomeration, which is helpful to grasp the future development trend. And reasonable optimization and adjustment of its development process. In the aspect of reconstruction technology, the traditional invariant target area correction method of DMSP/OLS night lighting data is improved, and all the pixels in the urban area of Chengdu-Chongqing urban agglomeration in 2013 are added to the fitting of the calibration model, and the correction rules of statistical data are designed. Furthermore, the temporal spatial information of each urban area in Chengdu-Chongqing urban agglomeration is recovered by dichotomous comparison method. The average relative error between the extracted area and the statistical area is -0.38. The accuracy of the constructed area extraction verified by the high-resolution Google Earth image is 98.29. Compared with other research results, the precision of the improved method is high and stable. In the aspect of result analysis, based on the extraction results, the paper studies the process of gravity center transfer and urban aggregation in urban agglomeration, and analyzes the internal pattern and temporal and spatial characteristics of urban agglomeration. The analysis shows that the aggregation of Chengdu-Chongqing urban agglomeration is highly consistent with the "Chengdu-Chongqing Urban agglomeration Development Plan", and the urban agglomeration has entered the stage of rapid development. With the continuous expansion of regional differences, the core position of Chengdu and Chongqing Metropolitan Circle has gradually formed. And Chongqing's development situation is slightly better.
【作者单位】： 西南大学地理科学学院;安徽大学资源与环境工程学院;
【基金】：中央高校基本科研业务费专项资金资助“耦合夜间灯光数据与元胞自动机的城市扩张模拟研究—以成渝城市群为例”(XDJK2017D025) 国家自然科学基金项目“基于遥感—过程耦合模型的岩溶石漠化植被恢复区碳收支及其时空格局特征研究”(41201436)
【分类号】：F299.27;P237
，
本文编号：2157785
[Abstract]:The "Chengdu-Chongqing Urban agglomeration Development Plan", issued in April 2016, formally defines the connotation and concrete boundary of Chengdu-Chongqing urban agglomeration for the first time, and reconstructs the forming process of Chengdu-Chongqing urban agglomeration, which is helpful to grasp the future development trend. And reasonable optimization and adjustment of its development process. In the aspect of reconstruction technology, the traditional invariant target area correction method of DMSP/OLS night lighting data is improved, and all the pixels in the urban area of Chengdu-Chongqing urban agglomeration in 2013 are added to the fitting of the calibration model, and the correction rules of statistical data are designed. Furthermore, the temporal spatial information of each urban area in Chengdu-Chongqing urban agglomeration is recovered by dichotomous comparison method. The average relative error between the extracted area and the statistical area is -0.38. The accuracy of the constructed area extraction verified by the high-resolution Google Earth image is 98.29. Compared with other research results, the precision of the improved method is high and stable. In the aspect of result analysis, based on the extraction results, the paper studies the process of gravity center transfer and urban aggregation in urban agglomeration, and analyzes the internal pattern and temporal and spatial characteristics of urban agglomeration. The analysis shows that the aggregation of Chengdu-Chongqing urban agglomeration is highly consistent with the "Chengdu-Chongqing Urban agglomeration Development Plan", and the urban agglomeration has entered the stage of rapid development. With the continuous expansion of regional differences, the core position of Chengdu and Chongqing Metropolitan Circle has gradually formed. And Chongqing's development situation is slightly better.
【作者单位】： 西南大学地理科学学院;安徽大学资源与环境工程学院;
【基金】：中央高校基本科研业务费专项资金资助“耦合夜间灯光数据与元胞自动机的城市扩张模拟研究—以成渝城市群为例”(XDJK2017D025) 国家自然科学基金项目“基于遥感—过程耦合模型的岩溶石漠化植被恢复区碳收支及其时空格局特征研究”(41201436)
【分类号】：F299.27;P237
，
本文编号：2157785
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