CHEN Xue-long,QI Yan-ping,WU Hai-yan,et al.Spatial Distribution Characteristics of Soil Heavy Metals of Longfeng Wetlands in Daqing[J].Research of Soil and Water Conservation,2013,20(04):141-144.
大庆龙凤湿地土壤重金属空间分布特征
- Title:
- Spatial Distribution Characteristics of Soil Heavy Metals of Longfeng Wetlands in Daqing
- Keywords:
- Daqing Longfeng wetland; heavy metals; spatial distribution
- 分类号:
- X142
- 摘要:
- 对大庆龙凤湿地土壤Cu，Cr，Cd，Zn，Pb和As六种重金属元素的空间分布特征进行了研究。结果表明：湿地土壤表土层（0—10 cm） Cu，Cr，Cd，Zn，Pb和As在水平分布上的变化较大，除Cr和Zn外，Cu，Cd，Pb和As含量均低于松嫩平原土壤重金属含量平均值；在土壤剖面中，Cu，Cr，Cd和As都随着土层深度的增加逐渐减少，而Pb和Zn则是先增加后减少，这与区域内土壤的理化性质、成母土质、岩石风化及淋溶作用有极大的关系。Cu，Cd，Zn，Pb，As五种重金属元素之间，除Cu和As间相关关系不显著外，其余各重金属元素之间均呈极显著的正相关关系，而Cr只与Cu呈显著正相关，与其他各重金属元素之间均未表现出显著的相关性，由此推测Cu，Cd，Zn，Pb，As元素的来源可能相同，且具有一定的共生组合性，而Cr则受湿地周边复杂环境及人为随机因素的影响较大。
- Abstract:
- The content and distribution characteristics of soil heavy metals such as Cu, Cr, Cd, Zn, Pb, As in Daqing Longfeng wetlands were investigated. The results showed that the average contents of Cu, Cr, Cd, Zn, Pb and As in top soil of 0—10 cm depth had significant changes in the horizontal distribution, the average contents of these soil heavy metals were lower than those in Songnen Plain except Cr and Zn. In the soil profile, the contents of Cu, Cr, Cd and As gradually declined, while the contents of Pb and Zn increased first and then decreased with the increase of soil depth, there was great relationship between the physical and chemical properties of the soil in the region, the parent soil, rock weathering and leaching. Among the five heavy metal elements (Cu, Cd, Zn, Pb and As), there was no significant relationship between Cu and As, but significant positive correlation existed among the rest heavy metal elements, while Cr had only a significant positive correlation with Cu, and did not exhibit a significant correlation between the other heavy metal elements. Therefore, it was speculated that Cu, Cd, Zn, Pb, As may originate from the same source, and present the symbiotic combination, and Cr was mainly influenced by the surrounding complex environment of wetlands and human random factors.
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备注/Memo
收稿日期:2012-11-16;改回日期:2013-01-28。
基金项目:黑龙江省博士后科研启动基金项目（LRB10-229）；黑龙江省教育厅面上项目（12531474）
作者简介:陈雪龙(1978-),男,黑龙江甘南县人,硕士,讲师,主要从事生态学与动物疾病研究。E-mail:cxlandqyp@163.com
通讯作者:齐艳萍(1979-),女,副教授,主要从事生态与环境毒理研究。E-mail:qiyanping79@163.com