Study on the Change of Impervious Surface in Guiyang from 1990 to 2020
To explore the change characteristics of impervious surface in Guiyang in recent 30 years,based on the dynamic data set of land cover in Guiyang from 1990 to 2020,the change rate,change intensity index,transfer matrix and transfer map are calculated.According to this research,from 1990 to 2020,the change rate of impervious surface in Guiyang showed a continuous increasing trend,with an average change rate of 6.46 km2/a.The overall change intensity index of impervious surface in Guiyang was 9.61%,and the change intensity index of impervious surface showed a gradually increasing trend during 1990-2020.From the transfer matrix,among the land cover types transferred to impervious surface,cultivated land>grassland>forest>water>bare land>shrub,which are 184.37,6.12,3.56,1.09,0.35 and 0.08 km2 respectively.From the transfer map,the impervious surface in Guiyang has the largest expansion area from 2010 to 2020.
国家科技期刊平台
NSTL
万方数据
