Cd、Pb、Cu、Zn、As复合污染在农田生态系统的迁移动态研究  

DYNAMIC MIGRATION OF Cd,Pb,Cu,Zn AND As IN AGRICULTURAL ECOSYSTEM

作　　者：吴燕玉[1] 王新[1] 梁仁禄[1] 陈怀满[2] 谢玉英[3] 

机构地区：[1]中国科学院沈阳应用生态研究所 [2]中国科学院南京土壤研究所 [3]中国科学院新疆生物土壤沙漠研究所

出　　处：《环境科学学报》1998年第4期407-412,共6页Acta Scientiae Circumstantiae

基　　金：中科院"八五"重大基础项目;国家自然科学基金

摘　　要：１９９０—１９９５年中国科学院生态网站联网研究中，在４个生态站对重金属复合污染（Ｃｄ、Ｐｂ、Ｃｕ、Ｚｎ、Ａｓ）进行了田间迁移动态实验研究，表明３年来表土中重金属元素含量缓慢下降，输出量最大支出项目为从表层向下迁移量可比作物地上部分带去量高出几十至数百倍，为污染土壤防治工作中淋洗技术运用指出了应用前景．Using lysemeter equipment, dynamic migration of a number of heavy metals in agricultural ecosystem in four ecological stations were studied from 1990 to 1995. The results showed that the total content of heavy metals in surface soil decreased gradually. The largest fraction of export was the migrated from topsoil to subsoil or deeper horizen. The amounts was 1—2 order of magnitude higher than that in harvested crops, suggesting that soil washing technique will be a potential option for soil redemption.

关 键 词：复合污染 重金属 生态系统 土壤污染 迁移动态 

分 类 号：S181[农业科学—农业基础科学] X530.32[环境科学与工程—环境工程]