四川环境
四川環境
사천배경
2012年
3期
65-69
,共5页
重金属%农用土壤%宝山区%生态危害
重金屬%農用土壤%寶山區%生態危害
중금속%농용토양%보산구%생태위해
Heavy metal%agricultural soils%Baoshan District%ecological hazard
在研究的8种重金属元素中，Cd、Cr、Cu、Pb、Zn、Ni的平均值都超过上海市土壤背景值，但均低于国家土壤环境二级标准。与上海优质农产地环境标准相比较，重金属含量平均值超过标准的有Cr、Pb、Zn，但研究区土壤中8种重金属含量的平均值均低于绿色食品产地环境技术条件和无公害食品产地环境技术条件。宝山区7个城镇农业土壤按多因子潜在生态危害指数评价，庙行镇的生态风险指数最高，月浦镇的生态风险指数最低。从宝山区农田土壤重金属含量的整体情况来看：多因子潜在生态评价值为119．08，宝山区农田土壤达到轻微生态危害。
在研究的8種重金屬元素中，Cd、Cr、Cu、Pb、Zn、Ni的平均值都超過上海市土壤揹景值，但均低于國傢土壤環境二級標準。與上海優質農產地環境標準相比較，重金屬含量平均值超過標準的有Cr、Pb、Zn，但研究區土壤中8種重金屬含量的平均值均低于綠色食品產地環境技術條件和無公害食品產地環境技術條件。寶山區7箇城鎮農業土壤按多因子潛在生態危害指數評價，廟行鎮的生態風險指數最高，月浦鎮的生態風險指數最低。從寶山區農田土壤重金屬含量的整體情況來看：多因子潛在生態評價值為119．08，寶山區農田土壤達到輕微生態危害。
재연구적8충중금속원소중，Cd、Cr、Cu、Pb、Zn、Ni적평균치도초과상해시토양배경치，단균저우국가토양배경이급표준。여상해우질농산지배경표준상비교，중금속함량평균치초과표준적유Cr、Pb、Zn，단연구구토양중8충중금속함량적평균치균저우록색식품산지배경기술조건화무공해식품산지배경기술조건。보산구7개성진농업토양안다인자잠재생태위해지수평개，묘행진적생태풍험지수최고，월포진적생태풍험지수최저。종보산구농전토양중금속함량적정체정황래간：다인자잠재생태평개치위119．08，보산구농전토양체도경미생태위해。
In Baoshan District of Shanghai, eight heavy metals in agricultural soils are investigated, of which the average contents of six metals, i. e. , Cd, Cr, Cu, Pb, Zn and Ni are higher than the Shanghai soil background values, but lower than the national secondary standards of soil environment. Compared with the soils with quality agricultural products in Shanghai, the metals of Cr, Pb and Zu are higher than the standards, while the contents of all the eight heavy metals are lower than the environmental conditions of soils producing Green foods and safe foods. According to the multi-factor assessment of potential ecological hazard for agricultural soil in seven towns of Baoshan District, the maximum and minimum results appear in Miaohang Town and Yuepu Town respectively. From overall situation of heavy metals in agricultural soils in Baoshan District, the value of multi-factor assessment for potential ecological hazard is 119. 08, belonging to slight ecological harm.
