基于GlobeLand30的番禺区地表覆盖时空变化分析  

Analysis of spatial and temporal changes of surface coverage in Panyu district based on GlobeLand30

作　　者：刘梁美子 LIU Liangmeizi(Guangzhou Urban Planning and Design Survey Research Institute,Guangzhou Guangdong 510060,China)

机构地区：[1]广州市城市规划勘测设计研究院,广东广州510060

出　　处：《北京测绘》2023年第3期390-396,共7页Beijing Surveying and Mapping

摘　　要：本文基于全球30 m地表覆盖数据(GlobeLand30),采用地表覆盖转移矩阵、重心迁移方法,分析了番禺区2000—2020年不同地表覆盖类型的相互转化及其空间分布。结果表明:过去20年间,人造地表持续占用耕地、森林和草地,其中耕地最为明显。同时,2010—2020年人造地表扩张速度较2000—2010年更为迅速。从相互转化的空间分布上看,番禺区人造地表在2000—2010年呈点状增加,之后10 a快速蔓延至全区。人造地表和水体的重心向东迁移,耕地的重心转移则逐步西移,呈“一进一退”的趋势。Based on GlobeLand30 data,the paper analyzed the transformation and spatial distribution of different surface coverages in Panyu district by using transition matrix and gravity center migration methods.The results showed that a large amount of cultivated lands,forests and grasslands had been occupied by artificial surfaces in the past 20 years,especially cultivated lands.And meanwhile,the expansion of artificial surfaces from 2010 to 2020 was more rapid than that from 2000 to 2010.On spatial scale,the artificial surfaces increased in dots during 2000—2010,and then spreaded rapidly till to the entire district in the next decade.The gravity center of artificial surfaces and water bodies migrated eastward,while the cultivated land gradually migrated in the opposite direction to west.

关 键 词：GlobeLand30 地表覆盖变化 重心迁移 番禺区 

分 类 号：P208[天文地球—地图制图学与地理信息工程]