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Bioaccumulation of heavy metals in plant leaves from Yan׳an city of the Loess Plateau, China

Identifier

018313

Type of Spiritual Experience

Background

Juniperus formosana (Formosan juniper) is a species of conifer in the Cupressaceae family. It is a shrub or tree to 15 m (49 ft) tall, found in China (from Tibet in the west to Zhejiang in the east) and in Taiwan

Salix matsudana (Chinese Willow) is a species of willow native to northeastern China. The species is named in honour of Sadahisa Matsuda, a Japanese botanist

A description of the experience

Ecotoxicol Environ Saf. 2014 Dec;110:82-8. doi: 10.1016/j.ecoenv.2014.08.021. Epub 2014 Sep 7.

Bioaccumulation of heavy metals in plant leaves from Yan׳an city of the Loess Plateau, China.

Hu Y1, Wang D2, Wei L1, Zhang X1, Song B1.

  • 1College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • 2College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China. Electronic address: wangdx66@sohu.com.

Abstract

Urban plants are capable of reducing environmental pollutions through bioaccumulation contaminants in their tissues.

The accumulation of heavy metals (Pb, Cu, Cd, Cr, and Zn) in leaves of nine tree species and five shrub species from Yan׳an city of China were investigated, and total metal accumulation capacities of different plants were evaluated using the metal accumulation index (MAI).

The results indicated that plants in polluted environments are enriched in heavy metals relative to those in pristine environments, this is mainly caused by traffic emissions and coal combustion.

Species with the highest accumulation of a single metal did not have the highest total metal accumulation capacity, the MAI should be an important indicator for tree species selection in phytoextraction and urban greening. Considering total accumulation capacities,

  • Sabina chinensis,
  • Juniperus formosana,
  • Ailanthus altissima and
  • Salix matsudana var. matsudana

could be widely used in the Loess Plateau.

Copyright © 2014 Elsevier Inc. All rights reserved.

KEYWORDS:

Heavy metal; Loess Plateau; Metal accumulation index; Phytoextraction; Yan׳an

PMID:

25199586

The source of the experience

PubMed

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Activities and commonsteps

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References