LUO Xuqiang,ZHOU Jinxing,ZHANG Guiling,et al.Characteristics of Heavy Metal Contents in Leaves of Common Plants in Leigong Mountain[J].Northern Horticulture,2017,41(17):110-114.[doi:10.11937/bfyy.20170436]
雷公山自然保护区常见植物叶片重金属元素含量特征
- Title:
- Characteristics of Heavy Metal Contents in Leaves of Common Plants in Leigong Mountain
- Keywords:
- nature reserve; Leigong Mountain; common plant; heavy metal
- 文献标志码:
- A
- 摘要:
- 为探讨自然保护区森林生态系统植物重金属含量状况,以雷公山自然保护区主峰地段常见植物为研究对象,对其叶片 6 种重金属元素(Fe、Mn、Zn、Ni、Pb、Cd)进行了测定。结果表明:重金属含量>100 mg·kg-1 的元素有 Fe 和 Mn,50~100 mg·kg-1 的元素有 Zn,<50 mg·kg-1 的元素有 Pb、Ni 和 Cd。Fe、Zn、Ni、Cd、Pb 为正偏态分布,Mn 为负偏态。除 Ni 外,其余元素在5种植物间的含量均存在显著差异(P<0.05)。该地区植物中 Mn、Zn、Ni、Pb、Cd 含量均已达到甚至超过中毒水平,存在着受重金属毒害的潜在风险,但除 Ni、Pb 外,各重金属含量均在世界陆生维管植物相应元素的平均含量范围内。研究区5种植物叶片中的重金属含量分配模式均表现为 Mn>Fe>Zn>Pb>Ni>Cd。Fe-Zn、Fe-Cd、Fe-Pb、Zn-Cd、Zn-Pb、Cd-Pb 之间均具有显著正相关关系(P<0.05),说明以上各组元素的来源相似且植物对各组元素的吸收具有一定的协同效应。
- Abstract:
- To investigate the characteristics of heavy metal contents of plant in nature reserve for forest ecosystem,six kinds of elements (Fe,Mn,Zn,Ni,Pb,Cd) in the leaves of common plants in Leigong Mountain were measured respectively.The results showed that the contents of Fe and Mn were greater than 100 mg?kg-1,Zn was vary between 50,100 mg?kg-1,and those of Pb,Ni and Cd were lower than 50 mg?kg-1.The elements including Fe,Zn,Ni,Cd and Pb showed positive skew distribution,while the element Mn showed negative skew distribution.Except for Ni,the contents of left five elements showed significant difference among five species (P<0.05).The contents of Mn,Zn,Ni,Pb and Cd have reached and even more than the poisoning level of plants,plants had the potential risk of heavy metal poisoning.But except Ni and Pb,the heavy metal contents of all elements were within the scope of the average level of land vascular plants in the world.The absorption models of heavy metal elements of five species were showed Mn>Fe>Zn>Pb>Ni>Cd.The significant positive correlations of contents were between Fe and Zn,Fe and Cd,Fe and Pb,Zn and Cd,Zn and Pb,Cd and Pb (P<0.05),which showed that Fe-Zn,Fe-Cd,Fe-Pb,Zn-Cd,Zn-Pb,Cd-Pb had similar source and performed synergy effects when absorbed by plant in this research area.
参考文献/References:
[1]张金池,严逸伦,曾锋.重金属对森林生态系统效应的研究进展[J].南京林业大学学报(自然科学版),2001,25(5):52-56.
相似文献/References:
[1]袁 睿 佳,李 晖,王 孙 高,等.怒江自然保护区的功能区规划设计[J].北方园艺,2009,33(04):0.[doi:10.11937/bfyy.200904085]
YUAN Rui -jia,LI Hui,W ANG Sun -gao,et al.Function Zone Planning and Design in Nujiang Nature Reserve[J].Northern Horticulture,2009,33(17):0.[doi:10.11937/bfyy.200904085]
备注/Memo
第一作者简介:罗绪强(1976-),男,博士,教授,现主要从事生态环境地球化学等研究工作。E-mail:xuqiangluo@163.com.