XU Cheng,ZHU Sixi,ZHAO Bin.Vertical Distribution Characteristics of Heavy Metal Cr in Caohai Wetland Soils[J].Northern Horticulture,2018,42(05):118-123.[doi:10.11937/bfyy.20172507]
草海湿地土壤中重金属铬的垂直分布特征
- Title:
- Vertical Distribution Characteristics of Heavy Metal Cr in Caohai Wetland Soils
- Keywords:
- Caohai wetland; soil types; heavy metal Cr; vertical distribution
- 文献标志码:
- A
- 摘要:
- 以草海湿地生态系统3种不同类型土壤为研究对象,采用贵州省土壤重金属背景值作为评价标准,研究重金属铬含量的垂直分布特征,为草海土壤修复提供科学依据。结果表明:草海湿地土壤存在一定的铬污染,且铬含量的分布并不均匀;3种不同类型土壤的铬含量平均值总和变化趋势为林地>沼泽地>耕地,但在土壤剖面深处它们受到的污染影响均不显著;沼泽地和林地土壤中铬含量总体上呈现先升高后下降的特点;在耕地土壤耕作层中的铬含量较其它2种土壤要高,说明耕作对表层土壤中铬的积累有正向作用。
- Abstract:
- Using the background values of soil heavy metals in Guizhou Province as the standard values,the vertical distribution characteristics of heavy metal Cr in the soils from three kinds of the land types was analyzed,which was object to provide the scientific base for protect the soils in Caohai wetland ecosystems.The results showed that the soils in Caohai wetland had certain Cr pollution,and Cr content distribution was not uniform.Meanwhile,the Cr pollution in three kinds of soil types had a trend that the forest land was the highest,and the cultivated land was the lowest.However,the pollution were not significant in different soil profiles.And the Cr contents in the marshland and the forest land firstly increased the decreased in different soil profiles.Lastly,the Cr contents in the cultivated land were higher than other land types,which indicated that the arable activities from human-beings had significant effects on the accumulation of Cr in the soils.
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备注/Memo
第一作者简介:徐铖(1993-),男,浙江海盐人,硕士研究生,研究方向为环境工程。E-mail:594709890@qq.com. 责任作者:朱四喜(1972-),男,江西贵溪人,博士,教授,现主要从事湿地生态学教学与科研等工作。E-mail:zhusixi2011@163.com. 基金项目:国家自然科学基金资助项目(31560107)。收稿日期:2017-10-12