中(zhong)(zhong)證網(wang)訊 (記(ji)者 劉楊)生態環境部(bu)(bu)3月(yue)15日(ri)消息(xi)，3月(yue)16日(ri)，隨著沙(sha)塵逐步南下(xia)，影(ying)響(xiang)(xiang)范圍(wei)可能波(bo)及(ji)(ji)華中(zhong)(zhong)及(ji)(ji)長三角(jiao)中(zhong)(zhong)北部(bu)(bu)地(di)區(qu)(qu)，同(tong)時華北地(di)區(qu)(qu)轉為(wei)(wei)高壓后部(bu)(bu)偏南風主導，有沙(sha)塵過程(cheng)殘留及(ji)(ji)回(hui)流風險(xian)，受(shou)此次沙(sha)塵暴影(ying)響(xiang)(xiang)，區(qu)(qu)域(yu)空(kong)氣(qi)質(zhi)量整體表現為(wei)(wei)以(yi)PM10為(wei)(wei)首要污(wu)(wu)染(ran)物的污(wu)(wu)染(ran)特征，預計空(kong)氣(qi)質(zhi)量以(yi)輕至中(zhong)(zhong)度污(wu)(wu)染(ran)為(wei)(wei)主，部(bu)(bu)分城市因沙(sha)塵滯(zhi)留可達重度污(wu)(wu)染(ran)。北京(jing)市預計空(kong)氣(qi)質(zhi)量為(wei)(wei)輕至中(zhong)(zhong)度污(wu)(wu)染(ran)。17至18日(ri)，受(shou)東北向冷空(kong)氣(qi)及(ji)(ji)下(xia)游降水過程(cheng)影(ying)響(xiang)(xiang)，區(qu)(qu)域(yu)沙(sha)塵過程(cheng)逐漸沉(chen)降清除(chu)。