基于夜光遥感的成都都市圈城市扩张动态分析
Dynamic analysis of urban expansion in Chengdu metropolitan area based on night light remote sensing
张小轩 1牛振生 2廖祥 1陈超3
作者信息
- 1. 成都理工大学 地球科学学院,四川成都 610059
- 2. 成都理工大学 地球科学学院,四川成都 610059;河南工程学院 土木工程学院,河南郑州 451191
- 3. 河南工程学院 土木工程学院,河南郑州 451191
- 折叠
摘要
成都都市圈是引领带动成渝双城发展的重要极核,本文利用NPP-VIIRS夜间灯光数据提取成都都市圈2012-2021年建成区空间分布,采用夜间灯光统计分析、标准差椭圆、重心变动、景观格局指数等方法,定量分析成都都市圈10年间建成区扩张及空间格局演变,揭示其演变特征,为成都都市圈后续发展规划提供参考.结果表明:2012-2021年,成都都市圈灯光距平值区域化特征明显,呈现中间高、周边低的核心-边缘结构.都市圈内部城市扩展动态变化较明显,建成区面积增幅达78.8%,城市扩张在原有基础上实现新增并连片发展.都市圈斑块总面积不断增加,斑块数量增长47.4%,新兴建成区不断涌现,成都对周边城市的带动作用较明显,都市圈内部呈协调发展趋势.
Abstract
Chengdu metropolitan area is an important polar core leading and driving the development of the twin cities of Chengdu and Chongqing.The research uses NPP-VIIRS night light data to extract the spatial distribution of built-up areas in Chengdu metropolitan area from 2012 to 2021,and uses night light statistical analysis,standard deviation ellipse method,center of gravity change,landscape pattern index and other methods to quantitatively analyze the built-up area expansion and spatial pattern evolution of Chengdu metropolitan area in the past 10 years,so as to reveal its evolution characteristics.It provides reference for the follow-up development planning of Chengdu metropolitan area.The results show that from 2012 to 2021,the regional characteristics of light anomaly value in Chengdu metropolitan area are obvious,showing a core edge structure with high middle and low periphery.The dynamic change of urban expansion within the metropolitan area is relatively obvious,with the area of built-up areas increasing by 78.8%.The urban expansion is newly added on the original basis and filled with continuous development.The total area of patches in the metropolitan area has been increasing,the number of patches has increased by 47.4%,and new built-up areas have been emerging.Chengdu has played an obvious role in driving the surrounding cities,and the inner part of the metropolitan area is in a coordinated development trend.
关键词
成都都市圈/NPP-VIIRS/城市扩张/景观格局指数Key words
Chengdu metropolitan area/NPP-VIIRS/urban expansion/landscape pattern index引用本文复制引用
基金项目
国家自然科学基金(42007424)
河南省重点研发与推广专项(科技攻关)支持项目(212102310427)
河南省高等学校重点科研项目(21A420002)
出版年
2024
NETL
NSTL
万方数据