| 摘要: |
| 为了解紫金县森林土壤重金属分布及污染状况，选取河源市紫金县内 30 个林分，测定其森林土
壤 0~100 cm 共 5 层土壤的重金属（砷、铅、铜、镍、镉）含量，分析 5 层土壤混合后的各重金属元素间
相关性，采用单因子污染指数法及内梅罗综合污染指数法评价 5 层土壤混合后的重金属污染程度。结果
表明：紫金县森林土壤砷含量超过污染风险值，铅、铜、镍、镉含量未达风险值，砷含量与铜含量极显
著正相关，铅含量与镉含量极显著正相关，铜含量与镉含量显著正相关；砷的单因子污染指数超过 1，属
轻度污染，内梅罗综合污染指数为 1.439，属轻度污染等级。 |
| 关键词: 紫金县 森林土壤 重金属 单因子污染指数法 内梅罗综合污染指数法 |
| DOI： |
| 投稿时间：2022-07-04修订日期：2022-12-09 |
| 基金项目:广东省省级财政专项资金“林地土壤调查” |
|
| Distribution Characteristics and Pollution Assessment of Heavy Metals in Forest Soil of Zijin County, Heyuan City |
| ZHANG Yanan,ZHANG Zhongrui,YU Fei,DING Xiaogang,Wei dan,zhuhangyong,zhanggeng |
| (Guangdong Academy of Forestry) |
| Abstract: |
| In order to understand the distribution and pollution status of heavy metal in forest soil of Zijin
County, 30 forest stands were selected in Zijin County, Heyuan City. The contents of heavy metals (As, Pb, Cu,
Ni, and Cd) in five soil layers of 0-100 cm were measured, and the correlation between the heavy metals in the
five layers of soil was analyzed. The single-factor pollution index method and the Nemerow comprehensive
pollution index method were used to evaluate the degree of heavy metal pollution after mixing five layers of
soil. The results showed that the As content of forest soil in Zijin County exceeded the risk value, while the Pb,
Cu, Ni and Cd content did not reach the risk value. The As content was significantly positively correlated with
the Cu content, the Pb content was significantly positively correlated with the Cd content, and the Cu content
was significantly positively correlated with the Cd content. The single factor pollution index of As exceeded 1,
which was considered as light pollution, and the Nemerow comprehensive pollution index was 1.439, which was
considered as light pollution. |
| Key words: Zijin county forest soil heavy metals single-factor pollution index method Nemerow comprehensive pollution index method |
