Heavy metal accumulation characteristics of Nepalese alder (Alnus nepalensis) growing in a lead-zinc spoil heap, Yunnan, south-western China

A fast-growing alder species native to the eastern Himalayas, Nepalese alder (Alnus nepalensis), has recently received considerable attention in the restoration of contaminated lands due to its significant economic benefits and ecological functions. The bioaccumulation characteristics and phytoremed...

Full description

Saved in:
Bibliographic Details
Published in:IForest (Viterbo) 2014-08, Vol.7 (4), p.204-208
Main Authors: Jing, Y, Cui, H, Li, T, Zhao, Z
Format: Article
Language:English
Subjects:
Alnus nepalensis
Bioaccumulation
Bioaccumulation Factor
Cadmium
Contaminated land
Ecological function
Environmental impact
Heavy metals
Indigenous species
Lead
Metal Contamination
Metallurgy
Mining
Nepalese Alder
Phytoremediation
Plant species
Reference materials
Sediment pollution
Shoots
Soil contamination
Soil pollution
Soils
Statistical analysis
Translocation
Translocation Factor
Zinc
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A fast-growing alder species native to the eastern Himalayas, Nepalese alder (Alnus nepalensis), has recently received considerable attention in the restoration of contaminated lands due to its significant economic benefits and ecological functions. The bioaccumulation characteristics and phytoremediation potential of naturally regenerated Nepalese alder were evaluated in a lead-zinc spoil heap located in Lancang county, Yunnan province, south-western China. Results showed that bioaccumulation factors (BFs) of A. nepalensis for Zn and Pb were always >1 in slightly contaminated soils (extractable Zn, Pb of 4.2-17.9 and 3.4-13.1 mg kg-1, respectively) and >1 for Cd in contaminated soils (extractable Cd 0.3- 6.8 mg kg-1). By contrast, translocation factors (TFs) for Zn were 1 for Pb in soil slightly contaminated by 13.1 mg kg-1 extractable Pb and >1 for Cd in contaminated soils (extractable Cd 2.6- 6.8 mg kg-1). Significant positive correlations were found between heavy metals (HMs) in roots and extractable HMs in soils (p
ISSN:1971-7458
1971-7458
DOI:10.3832/ifor1082-007