CAJ | 학술논문

为查明长寿城区及周边区域表层土壤中As、Cd、Hg等8个重金属元素的污染情况，进行土壤测量结果显示，区内Cr、Hg、Ni等大部分元素的平均含量高于三峡库区深层土壤背景值，Hg、Pb的后期叠加作用最为强烈；除Hg外，其余7个元素含量间存在显著正相关，其中Cr、Ni最为显著；随着pH值增加，Ni、Cr、Cd、Cu含量显著增加；单因子污染指数评价和内梅罗综合指数评价均显示研究区内土壤环境质量总体较好，污染区域较少，以轻度污染-中度污染为主，重污染约占全区面积的0.3%，Hg元素为研究区内最主要的污染元素。
위사명장수성구급주변구역표층토양중As、Cd、Hg등8개중금속원소적오염정황，진행토양측량결과현시，구내Cr、Hg、Ni등대부분원소적평균함량고우삼협고구심층토양배경치，Hg、Pb적후기첩가작용최위강렬；제Hg외，기여7개원소함량간존재현저정상관，기중Cr、Ni최위현저；수착pH치증가，Ni、Cr、Cd、Cu함량현저증가；단인자오염지수평개화내매라종합지수평개균현시연구구내토양배경질량총체교호，오염구역교소，이경도오염-중도오염위주，중오염약점전구면적적0.3%，Hg원소위연구구내최주요적오염원소。
Pedogeochemical survey indicates that average contents of 8 heavy metal elements such as Cr, Hg, Ni, etc. in Changshou and its neighborhood are higher than the deep soil background values in the Three Gorges Reservoir Region, and later superposition of Hg, Pb is obvious. With the exception of Hg, the remaining seven elements, especially Cr and Ni, are in notable positive correlation. Contents of Ni, Cr, Cd and Cu increase with pH value. Single factor pollution index assessment and N. L. Nemerow comprehensive index assessment show that soil in the study area is subjected to light and moderate pollution with area of heavily pollution accounts for about 0.3%of the whole area. Hg is principal pollution element.