当前位置: 首页 > 文章 > 不同年龄枫香对土壤中重金属污染物吸收能力比较 山东林业科技 2013,43 (1) 1-7
Position: Home > Articles > Comparison On Absorbing Capacity of Liquidambar Formosama of Different Ages on Heavy Metal Pollutants in Soil Journal of Shandong Forestry Science and Technology 2013,43 (1) 1-7

不同年龄枫香对土壤中重金属污染物吸收能力比较

作  者:
吉启轩;薛建辉;沈雪梅
单  位:
华东师范大学;江苏省海涂研究中心;南京林业大学江苏省高校林业生态工程重点实验室
关键词:
年轮;土壤重金属;污染;废弃矿区;枫香
摘  要:
为了解枫香在不同年龄段对重金属污染土壤的净化能力,在土壤受到重度重金属污染的栖霞矿区测定其乔木层优势树种枫香年轮及根部土壤中Cr、Pb、Ni、Zn、Cu、Mn、Fe7种重金属元素含量。评价抗逆树种枫香随年龄增长吸收土壤重金属能力的变化。结果表明:1、Duncan’新复极差法分析显示,不同年龄枫香吸收重金属污染物能力大小的排列顺序为:30年生>40年生>20年生>50年生≌10年生≌70年生。枫香处于20~30年龄段富集重金属污染物能力最强,30~40年龄段次之。其他年龄段较弱。2、20~30,30~40年龄段枫香胸径增长量最大,将50年生枫香历年胸径增长量与相应年轮中重金属含量比较发现,在20~30,30~40年龄段之间两者均出现较快增长。
译  名:
Comparison On Absorbing Capacity of Liquidambar Formosama of Different Ages on Heavy Metal Pollutants in Soil
作  者:
Ji qixuan1,2,Xue jianhui1,Shen Xuemei3(1.Jiangsu Key Laboratory of Forestry Ecological Engineering,Nanjing Forestry University,Nanjing 210037,China;2.Tidal Flat Research Center of SOA(Jiangsu Province);3.East China Normal University)
关键词:
tree ring;soil heavymetal pollution;desert digging area;Liquidambar formosana
摘  要:
In order to know about the purifying capacity of the liquidambar formosama of different ages on the soils polluted by the heavymetals,in the Qixiamining area where the soil is polluted by the heavymetals seriously,the content of 7 heavymetal elements,i.e.: Cr,Pb,Ni,Zn,Cu,Mn and Fe in the tree ring of liquidambar formosama,the advantageous tree on the arborous layer and in the soil of its root ismeasured.The result shows: 1、the absorbing capacity of the liquidambar formosama of different ages on the heavymetal pollutants is as follows(descending sequence): of 30 years old> of 40 years old > of 20 years old > of 50 years old ≌of 10 years old≌ of 70 years old.The liquidambar formosama aged between 20~30 years old ismostly active to absorb the heavymetal pollutants,the one aged between 30~40 years old follows,and the one of other ages is weakest.2、 The liquidambar formosama aged between 20~30 years old and 30~40 years old have themaximal increment of cross-section diameter.By comparing the historical increment of the cross-section diameter of the liquidambar formosama aged 50 years old with the heavymetal content in the corresponding annual ring,it is found both got quicker growth in the period of 20~30 years old and 30~40 years old.

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