| 张紫萱,麦麦提吐尔逊·艾则孜,王丽灵,陈明丽.新疆艾比湖流域农田土壤重金属环境容量评价[J].农业环境科学学报,2025,44(10):2590-2597. |
| 新疆艾比湖流域农田土壤重金属环境容量评价 |
| Environmental capacity assessment of heavy metals in farmland soils in the Ebinur Lake basin of Xinjiang |
| 投稿时间：2024-12-05 |
| DOI：10.11654/jaes.2024-1066 |
| 中文关键词: 农田 土壤 重金属 环境容量 艾比湖流域 |
| 英文关键词: farmland soil heavy metal environmental capacity Ebinur Lake basin |
| 基金项目:新疆维吾尔自治区自然科学基金项目（2023D01E08）；国家自然科学基金项目（U2003301） |
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| 中文摘要: |
| 为阐明新疆艾比湖流域农田土壤重金属环境容量，从研究区采集115个表层土壤样品，分析Cd、Hg、As、Pb、Cu、Ni和Zn 7种重金属元素含量。采用环境容量综合指数（PI）分析农田土壤重金属环境容量特征及其空间分布规律。结果表明：艾比湖流域农田土壤中Cd、Hg、As、Pb、Cu、Ni与Zn等7种重金属的含量平均值均低于《土壤环境质量农用地土壤污染风险管控标准》（GB 15618—2018）中的允许限值，土壤重金属含量整体上处于安全范围内。研究区农田土壤中各重金属元素的静态年容量和动态年容量平均值从大到小依次为：Zn、Ni、Pb、Cu、As、Hg、Cd。各重金属的动态年环境容量平均值均大于静态年环境容量。农田土壤中7种重金属单项环境容量指数（Pi）从大到小依次为：Cu>Hg>Ni=Pb>Cd>Zn>As。农田土壤中重金属PI平均值为0.82，属于中容量区。农田土壤各重金属Pi值空间分布格局各不相同。研究表明，土壤PI低值区出现在温泉县的北部和精河县的西南部以及北部区域。整体上，土壤As含量是影响艾比湖流域农田土壤重金属环境容量的主要因素。 |
| 英文摘要: |
| To clarify the environmental capacity of heavy metals in farmland soils in the Ebinur Lake basin of Xinjiang, a total of 115 surface soil samples were collected from the study area, and the contents of heavy metals including Cd, Hg, As, Pb, Cu, Ni, and Zn were analyzed. The Environmental Capacity Comprehensive Index（PI）was used to analyze the characteristics and spatial distribution patterns of environmental capacity of heavy metals in farmland soils. The results showed that the average content of seven heavy metals, including Cd, Hg, As, Pb, Cu, Ni, and Zn, in the farmland soil in the Ebinur Lake basin was lower than the allowable limits in the Soil Environmental Quality-Risk Control Standards for Soil Contamination of Agricultural Land（GB 15618—2018）, and the overall content of heavy metals was within a safe range. The average static and dynamic annual environmental capacities of various heavy metals in farmland soil in the study area can be ranked as：Zn>Ni>Pb>Cu>As>Hg>Cd. The average dynamic annual environmental capacity of various heavy metals was greater than the static annual environmental capacity. The single environmental capacity index（Pi）of seven heavy metals in farmland soils can be ranked as：Cu>Hg>Ni=Pb>Cd>Zn>As. The average PI value of heavy metals in farmland soil was 0.82, at a medium capacity zone. The spatial distribution patterns of Pi of various heavy metals are different. The low PI areas distributed in the northern part of Wenquan County, and the southwestern and northern parts of Jinghe County. Overall, the soil As content is the main factor affecting the environmental capacity of heavy metals in farmland soils in the Ebinur Lake basin. |
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