青藏高原西部、南部和东北部边界地区天然水的水化学性质及其成因
田原,余成群,查欣洁,高星,于明寨

Hydrochemical characteristics and factors controlling of natural water in the western, southern, and northeastern border areas of the Qinghai-Tibet Plateau
TIAN Yuan,YU Chengqun,ZHA Xinjie,GAO Xing,YU Mingzhai
图8 变量主成分分析结果
Fig. 8 PCA results for variables