1989—2020年黄河流域巴彦淖尔段地表覆盖类型时空演变研究

刘永新, 张思源, 边鹏, 王丕军, 袁帅

Exploring the spatio-temporal evolution of land cover types in the Bayannur section of the Yellow River basin from 1989 to 2020

LIU Yongxin, ZHANG Siyuan, BIAN Peng, WANG Pijun, YUAN Shuai

表3 PCA中的特征值和累计贡献率

Tab.3 Eigevvalues,contribution rate and cumulative contribution rate in PCA

主成分 特征值 贡献率/% 累计贡献率/% 1 2.467 41.109 41.109 2 1.552 25.859 66.968 3 1.203 20.055 87.023 4 0.416 6.936 93.959 5 0.300 5.002 98.961 6 0.062 1.039 100.000