汉江上游水体沉积物污染状况分析与评价
杨婵, 吴娟娟, 车旭曦, 岳思羽, 刘智峰, 宋凤敏

Pollution analysis and assessment of sediments in the upper reaches of the Hanjiang River
YANG Chan, WU Juan-Juan, CHE Xu-Xi, YUE Si-Yu, LIU Zhi-Feng, SONG Feng-Min
图3 重金属系统聚类分析树状图
Fig.3 Tree diagram of systematic cluster analysis of heavy metals