摘要
为探究贵阳市近 30 年不透水面变化特征,基于 1990-2020 年贵阳市土地覆被动态数据集,计算出变化速率、变化强度指数、转移矩阵以及转移图谱.研究表明:1990-2020 年间贵阳市不透水面变化速率呈现持续增大的趋势,平均变化速率为 6.46 km2/a;1990-2020 年间贵阳市不透水面总体变化强度指数为9.61%,且不透水面变化强度指数呈现逐渐升高的趋势;从转移矩阵来看,转入不透水面的土地覆被类型中,耕地>草地>森林>水域>裸地>灌木,分别为:184.37、6.12、3.56、1.09、0.35、0.08 km2;从转移图谱来看,贵阳市不透水面在 2010-2020 年间扩张面积最大.
Abstract
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