江西科学2025，Vol.43Issue(2)：341-348,8.DOI:10.13990/j.issn1001-3679.2025.02.018
夜光遥感视角下长江中游城市群规模与发展动态研究
Research on the Scale and Development Dynamics of Urban Agglomeration in the Middle Reaches of the Yangtze River from the Perspective of Nighttime Light Remote Sensing
摘要
Abstract
As a key pillar of the Central China Rise Strategy,the spatiotemporal changes of the Urban Agglomeration in the Middle Reaches of the Yangtze River(UMRYR)hold significant importance for promoting regional economic development.Using DMSP/OLS and NPP/VIIRS nighttime light data,this study utilized methods such as primacy index,rank-size rule,standard deviational ellipse,and urban expansion indicators to reveal the scale charac-teristics and development dynamics of the urban agglomeration in the middle reaches of the Yangtze River from 2000 to 2020,focusing on scale,structure,and development trajectory.Additionally,the study employed a gray prediction model to predict the expansion trend of built-up areas in the region from 2025 to 2030.The results show that over the past two decades,the UMRYR has continuously expanded,with economic activities primarily centered around the three provincial capitals:Wuhan,Changsha and Nanchang,and with relatively concentrated urban scales.The rate of expansion has gradually stabilized,with urban scales transitioning from concentration towards more balanced development.Spatially,the expansion of the UMRYR follows a"northwest-southeast"direction,with its center of gravity moving progressively southeastward.The dynamics of urban development exhibit a pattern of"expansion-contraction-expansion".The gray prediction model displays high accuracy,with an average relative error of 3.06%.The forecasts indicate that the UMRYR will continue to expand in the medium to long term,but at a slower pace.关键词
夜间灯光数据/长江中游城市群/城市建成区/城市发育特征/灰色预测模型Key words
nighttime light data/Urban Agglomeration in the Middle Reaches of the Yangtze River(UMRYR)/urban built-up area/urban development characteristics/gray prediction model分类
天文与地球科学引用本文复制引用
王楠,孙瑛莹,官云兰,王毓乾,李子轩..夜光遥感视角下长江中游城市群规模与发展动态研究[J].江西科学,2025,43(2):341-348,8.基金项目
自然资源部环鄱阳湖区域矿山环境监测与治理重点实验室资助项目(MEMI-2023-15) （MEMI-2023-15）
宜宾学院科研启动项目(2023QH14). （2023QH14）
