我国新疆北部积雪中痕量元素的时空分布及污染评估

王鑫,王宁练,王俊杰,申保收

Spatial and temporal distribution of trace elements in the snow cover and pollution assessment in northern Xinjiang

Xin WANG,Ninglian WANG,Junjie WANG,Baoshou SHEN

图4 北疆地区典型采样点72小时后向轨迹聚类分析图

Fig.4 The clustering analysis of 72-hour backward air trajectory of typical sampling points in northern Xinjiang