研究论文
吴燕玉,王新,梁仁禄,陈怀满,谢玉英.Cd、Pb、Cu、Zn、As复合污染在农田生态系统的迁移动态研究[J].环境科学学报,1998,18(4):407-414
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
- 基金项目:中科院“八五”重大基础项目, 国家自然科学基金
- 吴燕玉
- 中国科学院沈阳应用生态研究所, 沈阳 110015
- 王新
- 中国科学院沈阳应用生态研究所, 沈阳 110015
- 梁仁禄
- 中国科学院沈阳应用生态研究所, 沈阳 110015
- 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。
- Abstract: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.
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