海洋科学2011，Vol.35Issue(7)：88-95,8.
胶州湾滨海湿地盐渍土壤中重金属的聚集与分散特性研究
Accumulation/dispersion of heavy metals in the saline soil of the Jianzhou Bay northeastern coastal wetland
摘要
Abstract
Soil salinization is a worldwide resource and ecological problem, and systemic study on saline soil is the foundation for its bioremediation. The accumulation/dispersion of heavy metals in the saline soils was discussed based on the research on the saline soils in the northeastern coastal wetland of Jiaozhou Bay. The variations of Cu and Zn concentrations in saline soils of the Jiaozhou Bay northeastern coast were great and their concentrations were higher than the soil background values; the concentrations of Pb, Cd and Cr had little difference between sample stations but were higher than the background values; the variations of As and Mo concentration were not prominence and their concentrations were lower than the background values; the distribution was similar to V ,Co and Ni, the concentrations of which in the northern part were somewhat higher than the soil background values whereas in the southern part were slight lower than the soil background values. Cu, Zn, Cr, Cd, Pb, and Ni were ＂elements accumulated by saline soil＂ and As, Co, V, Mo ＂elements dispersed by saline soil＂. As, Co, Ni, V, Mo, Cu, Zn and Pb of saline soils in the northeastern coast of the Jiaozhou Bay mainly came from soil parent materials and were not influenced by anthropogenic activities, whereas Cr and Cd mainly originated from industrial and agricultural inputs by Qingdao besides the parent materials. Pb and Zn in most of the saline soil were not polluted, but light polluted in some areas of the northeast coastal in the Jiaozhou Bay. Half of the studied stations had no pollution of Cu and Cr, but the other half stations were polluted slightly by Cu and Zn. However, there was mild to moderate pollution for Cd. The pollution severity of the heavy metals in the region followed the order of Cd〉〉Cu〉Cr〉〉Zn〉 Pb〉〉Ni〉V 〉Co〉As〉Mo. Beside the effect of material source, the concentrations of heavy metals in saline soils of the northeastern coast of the Jiaozhou Bay were influence by the nature of heavy metals and vegetation on the soil. The dominant halophyte Suaeda Salsa can significantly absorb Pb and Cd from the saline soil, so alleviating the corresponding contamination of the soil.关键词
聚集／分散/重金属/盐渍土壤/碱蓬/胶州湾东北沿岸湿地Key words
accumulation/dispersion/heavy metal/saline soil/Suaeda salsa/the Jianzhou Bay northeastern coastal wetland分类
天文与地球科学引用本文复制引用
李学刚,袁华茂,许思思,段丽琴,李宁,张默,宋金明..胶州湾滨海湿地盐渍土壤中重金属的聚集与分散特性研究[J].海洋科学,2011,35(7):88-95,8.基金项目
中国科学院知识创新方向群项目 （）
国家自然科学基金委创新群体项目 （）
国家973课题（2007CB407305）资助 （）
