title: [Distribution characteristics of heavy metals along an elevation gradient of montane forest].
abstract: In the present paper, the concentrations of fourteen heavy metals (Fe, Al, Ti, Cu, Cr, Mn, V, Zn, Ni, Co, Pb, Se, Cd and As) were determined by ICP-AES and atomic absorption spectroscopy along an elevation gradient of montane forest. The results show that the elevation gradient had significant effects on the concentrations of Fe, Al, Ti, V, Pb and As. And the concentrations of Cu, Cr, Mn, Zn, Ni, Co, Se and Cd were not significantly affected by the elevation gradient. Because the studying area is red soil, the elevation gradient had significant effects on the concentrations of Fe, Al and Ti which are characteristic heavy metals of red soil, suggesting that the red soil at different elevations has different intensities of weathering desilication and bioaccumulation. Other heavy metals have different relationships with the elevation gradient, such as the concentrations of Cr, Zn and Cd were high at relatively high elevation and Pb and As were high at relatively low elevation. These results suggest that the different elevations of montane forest soils were polluted by differently types of heavy metals.
authors.affiliation: Centre for Watershed Ecology, Institute of Life Science and Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang 330031, China. wanjiarong@126.com
authors.forename: Jia-rong
authors.initials: JR
authors.lastname: Wan
authors.forename: Ming
authors.initials: M
authors.lastname: Nie
authors.forename: Qin
authors.initials: Q
authors.lastname: Zou
authors.forename: Shao-chang
authors.initials: SC
authors.lastname: Hu
authors.forename: Jia-kuan
authors.initials: JK
authors.lastname: Chen