沈阳城郊土壤有机污染特征-生态学杂志.PDF

生态学杂志ChineseJournal of Ecology摇 2011,30(11):2472-2477 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 沈阳市城郊土壤有机污染特征* ** 崔摇 健 摇 都基众摇 杨摇 泽摇 马宏伟摇 李摇 霄 (沈阳地质矿产研究所,沈阳110034) 摘摇 要摇 对沈阳市城郊土壤中35 种有机污染物进行了检测,分析了土壤有机污染检出特 征和空间分布特征。 沈阳市城郊土壤共检出了15 种有机污染物;苯并(a)芘、六氯苯、滴滴 涕和六六六的变异系数均大于1,其污染物浓度局部富集程度高,含量起伏变化大,土壤有 机污染呈现“一多三少冶的现象,即全区检出有机污染物的采样点多,检出的有机污染物种 类较少,有机污染物含量少,且无超标点。 受土壤包气带岩性影响,城郊土壤垂向上有机污 染规律明显。 土壤区域有机污染分布特征与城市土地利用功能一致性较高。 分析了各类 有机污染物含量和分布特征的主要影响因素,对防治城市土壤污染,进而保障居民的食品 安全和饮水安全具有重要意义。 关键词摇 城郊土壤;检出特征;分布特征 中图分类号摇 X592摇 文献标识码摇 A摇 文章编号摇 1000-4890(2011)11-2472-06 Characteristics ofsoilorganicpollutioninShenyangsuburbsofLiaoningProvince,North鄄 ** east China. CUIJian ,DUJi鄄zhong,YANGZe,MA Hong鄄wei,LIXiao (Shenyang Institute of Geology MineralResources,Shenyang 110034,China).ChineseJournal of Ecology,2011,30 (11):2472-2477. Abstract:Basedonthesurvey of35 organicpollutantsinthesoilsof Shenyangsuburbs,thispa鄄 per studiedthedetection characteristicsof thepollutantsandtheir spatial distribution characteris鄄 tics. Fifteen of the35 organicpollutantswere detected,amongwhich,benzopyrene,hexachloro鄄 benzene,DDT,and BHChad the coefficientsof variation 1,and their local enrichment degree was high,with greater fluctuation in concentration. The soil organic pollution in the suburbs presented a pattern of “one more and three less冶,i.e. ,more sampling points with detected or鄄 ganic pollutants,lesskindsof detectedorganicpollutants,lessconcentrationoftheorganicpollu鄄 tants,and no sampling points exceeded the standards. Due to the effects of the lithology of soil vadose z