1992~2013我国干旱区城市不透水遥感制图与扩张过程分析
沈谦,朱长明,张新,黄巧华,杨程子

Remote Sensing Mapping and Expansion Analysis of Urban Impervious Surface in Arid Areas of China from 1992 to 2013
Qian Shen,Changming Zhu,Xin Zhang,Qiaohua Huang,Chengzi Yang
图4 干旱区城市扩张过程聚类分析
Fig.4 Cluster analysis of urban sprawl process in arid regions