黄河三角洲表层土壤重金属元素的空间分布及其影响因素  

SPATIAL DISTRIBUTION OF HEAVY METALS IN THE SURFACE SOIL OF YELLOW RIVER DELTA AND INFLUENCE FACTORS

作　　者：缪雄谊[1,2,3] 郝玉培[2] 阳莲锦 叶思源[1,2,3,4] 陈伟海[2] 王珽[2] 陈宏峰[2] 黄保健[2] 

机构地区：[1]中国地质调查局滨海湿地生物地质重点实验室,青岛266071 [2]中国地质科学院岩溶地质研究所,广西岩溶动力学重点实验室,桂林541004 [3]贵州地矿基础工程有限公司,贵阳550001 [4]国土资源部海洋油气资源与环境地质重点实验室,青岛266071

出　　处：《海洋地质与第四纪地质》2016年第1期57-68,共12页Marine Geology & Quaternary Geology

基　　金：国土资源部公益性行业基金(201111023);国家自然科学基金(41240022);海洋地质保障工程项目(GZH201200503);大地调项目(1212010611402)

摘　　要：主要针对黄河三角洲表层土壤及沉积物的重金属分布调查,2006—2008年间采集表层土壤样品219个(其中浅海湿地25个),运用先进的现代分析测试手段进行测试,得到黄河三角洲表层土壤中重金属元素的富集程度为:Cr>Pb>Zn>As>Cu>Cd>Hg,浅海湿地中近海表层沉积物中重金属元素的富集程度较低,并根据研究区重金属的分布,将三角洲划为三个区域,北部油气开采影响区,中部黄河河流影响区,南部农业活动和生活污水排放联合影响区,黄河三角洲表层土壤中虽然具有较高的有机质,但是其对上三角洲平原表层土壤中重金属元素仅具有中等以下的富集作用,而对浅海湿地近海沉积物中的重金属具有中等以上的富集作用。This research focuses on the distribution pattern of heavy metals in the surface soil and sediment of the Yellow River Delta.219 samples were collected,including 25 samples from the shallow coastal wetland in 2006-2008.Modern techniques have been used to detect the contents of heavy metals.The abundance of heavy metals appears in an order of Cr Pb Zn As Cu Cd Hg in the region.The accumulation ratio of heavy metals is low in shallow coast wetland.The Delta as a whole could be divided into three regions in accordance with the distribution pattern of heavy metals.It shows that the northern part of the delta is mainly effected by oil and gas exploration and production,the middle part of the delta affected by the River itself and the south part effected by agriculture and discharge of sewages.Even though the soil of the Delta is rich in organic matter,the heavy metal contamination remains on medium level or even lower in the upper deltaic plain,while pollution of heavy metals is higher in the shallow coast wetland.

关 键 词：表层土壤 沉积物 重金属 黄河三角洲 

分 类 号：P736.4[天文地球—海洋地质]