Determining weights of heavy metal contamination is important in the soil environment quality assessment. Weights of heavy metal contamination were computed according to impacts of heavy metals on human health by using improved classical analytical hierarchy process (AHP) in the soil environment quality assessment. Aiming at the problem of soils heavy metal pollutions in Baiyin which is a resources city and a typical mining city, the author evaluated the effects of heavy metals of cultivated land by GIS and weighted mean method. The results showed that: among the 5 heavy metals, the variation degree from big to small was As, Zn, Cu, Cr, Pb. The integrated pollution index of soil heavy metals was 0.48, which meant the soil in study area was security. The correlation analysis showed extremely significant positive correlation between Pb and Zn, Pb and Cu, Zn and Cu. The space distribution of soil heavy metals pollution revealed that most of the arable layer soil in Baiyin District was at security level, only the central and southeastern parts of the region was at light pollution levels. Finally, the result of grade evaluation of the heavy metal pollution of cultivated land showed: bottom level, safety level, tarnished level, pollution level accounted for 24.83%, 70.33%, 2.72%,
Key words
arable layer soil; heavy metal; improved AHP; GIS; pollution evaluation
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1]郭朝晖, 肖细元, 陈同斌, 等.湘江中下游农田土壤和蔬菜的重金属污染[J].地理学报, 2008, 63(1):3-11
[2]陈峰, 蒋新, 唐访良, 等.层次分析法与地理信息系统在农田土壤重金属污染评价中的应用[J].环境污染与防治, 2012, 34(7):6-8
[3]高健磊, 王静.两种河道底泥重金属污染生态危害评价方法比较研究[J].环境工程, 2013, 31(2):119-121
[4]王婕, 刘桂建, 方婷, 等.基于污染负荷指数法评价淮河安徽段底泥中重金属污染研究[J].中国科学技术大学学报, 2013, 43(2):97-103
[5] 赵沁娜, 徐启新, 杨凯, 等.潜在生态危害指数法在典型污染行业土壤污染评价中的应用[J].华东师范大学学报(自然科学版), 2005, (1):111-116.[J].华东师范大学学报(自然科学版), 2005, 1(1):111-116
[6]周林飞, 许士国, 孙万光, 等.基于灰色聚类法的扎龙湿地水环境质量综合评价[J].大连理工大学学报, 2007, 47(2):240-245
[7]刘付程, 史学正, 于东升, 等.基于地统计学和的太湖典型地区土壤属性制图研究--以土壤全氮制图为例[J].土壤学报, 2004, 41(1):20-27
[8]谢正苗, 李静, 王碧玲, 等.基于地统计学和的土壤和蔬菜重金属的环境质量评价[J].环境科学, 2006, 27(10):2110-2116
[9]朱青.两种模糊数学模型在土壤重金属综合污染评价中的应用与比较[J].环境保护科学, 2004, 123(30):53-57
[10]高瑞英.土壤重金属污染环境风险评价方法研究进展[J].科技管理研究, 2012, 32(8):45-50
[11]李雪梅, 王祖伟, 汤显强, 等.重金属污染因子权重的确定及其在土壤环境质量评价中的应用[J].农业环境科学学报, 2007, 26(6):2281-2286
[12]张松滨, 宋静.土壤重金属污染的灰色模糊评价[J].干旱环境监测, 2002, 16(1):31-33
[13] GB2715-2005, 中国人民共和国国家标准—粮食卫生标准[S].
[14] GB1519921994.食品中铜限量卫生标准[S].
[15] GB1496121994.食品中铬限量卫生标准[S].
[16] GB1310621991.食品中锌限量卫生标准[S].
[17]焦树锋.法中平均随机一致性指标的算法及实现[J].太原师范学院学报自然科学版, 2006, 5(4):45-47
[18]常建娥, 蒋太立.层次分析法确定权重的研究[J].武汉理工大学学报信息与管理工程版, 2007, 29(1):153-156
[19]李雪梅, 邓小文, 王祖伟, 等.污染因子权重及区域环境质量综合评价分级标准的确定[J].干旱区资源与环境, 2010, 24(4):97-100
[20]郑海龙, 陈杰, 邓文靖, 等.城市边缘带土壤重金属空间变异及其污染评价[J].土壤学报, 2006, 43(1):39-45
[21]吴新民, 范迪富, 华明, 等.太仓郊区河流沉积物重金属污染现状及评价[J].地质学刊, 2009, 33(1):43-47
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}