成都市生态环境地球化学特点

GEOCHEMICAL FEATURES OF ECOLOGIC ENVIRONMENT IN CHENGDU CITY

成都平原多目标地球化学调查表明 ,成都市区土壤Hg、Ag、Pb、Cu、Zn、Sb、P、S、Se、C、Sr、Mo、Na2 O等 13种元素和河流水系沉积物P、Hg、S、Zn、Pb、Cu、Mo及有机质、N、Cd、Cr等 11种为高含量元素。土壤中主要污染元素Hg、Pb、Zn、Cu的含量 ,在浅层样中较高 ,其污染状况市区内及工厂区比城郊严重 ;府河、南河的污染比沙河严重 ,但其污泥可以综合利用。研究表明 ,东部龙泉山区深层样丰富的农业有益元素为水果生长提供了有利条件。

Multi-purpose geochemical mapping on the Chengdu Plain indicates soil rich in Hg, Ag, Pb, Cu, Zn, Sb, P, S, Se, C, Sr, Mo, Na 2O and stream sediments rich in P, Hg, S, Zn, Pb, Cu, Mo, N, Cd, Cr and organic matter in Chengdu City Proper. Major pollutant elements in soil are Hg, Pb, Zn, Cu contents of which are higher in the upper level, urban district and by the Fuhe River and South River than those in the lower level, suburban district and by the Shahe River. But, they may be recovered. And the study shows that useful elements in the lower soil in the Longquan Mountains are favourable to growth for fruit tree.