Land Cover Change in Nanjing from 1993 to 2018
Land cover change is a significant indicator of regional and global environmental change,and it even has an important significance for sustainable land management.The objective of this study was analysis on the land cover change in Nanjing during the period of 1993–2018.The sample data were selected under a stratified sampling scheme.The training features were composed based on Tasseled Cap transformation,enhanced vegetation index(EVI)and normalized difference water index(NDVI).The Classification and Regression Trees(CART)method was used to obtain the land cover maps of Nanjing in 1993,1998,2003,2008,2013 and 2018.We implemented the post-classification change detection method to analyze the land cover change in Nanjing.The image composite and classification of long-term remote sensing data sequence were implemented with Google Earth Engine(GEE)platform.Results showed that:(1)the vegetation covered areas of Nanjing decreased from 79.47%in 1993 to 54.89%in 2018.The urban or exurban areas of Nanjing increased from 10.94%in 1993 to 33.92%in 2018.(2)The main feature of land cover in Nanjing was the expansion of urban and exurban,which mainly happened in the central and southern parts of Nanjing.
land cover change Google Earth Engine CART
Pei-shan SHEN Jian GAO
College of Telecommunications and Information Engineering,Nanjing University of Posts and Telecommun School of Geographic and Biologic Information,Nanjing University of Posts and Telecommunications,Nan
国际会议
长沙
英文
150-155
2019-08-30（万方平台首次上网日期，不代表论文的发表时间）