文献类型：期刊文献

英文题名：Pb and Cd Contents in Soil, Water, and Trees at an Afforestation Site, South China

作者：Pei, Nancai[1] Chen, Bufeng[1] Liu, Shuguang[2]

第一作者：裴男才

通信作者：Chen, BF[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[2]US Geol Survey, Natl Ctr Earth Resources Observat & Sci EROS, Sioux Falls, SD 57198 USA

年份：2015

卷号：95

期号：5

起止页码：632-637

外文期刊名：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

收录：;EI(收录号：20153201124934);Scopus(收录号：2-s2.0-84944441310);WOS:【SCI-EXPANDED(收录号:WOS:000363026800015)】；

基金：This study was financially supported by the Special Fund for Forest Scientific Research in the Public Welfare (20140430105), NSF-China (31200471), the Ministry of Finance of the People's Republic of China (RITFYWZX201208), and the CFERN and GENE Award Funds on Ecological Paper.

语种：英文

外文关键词：Phytoremediation; Heavy metal; Mega-city; Urban forest; Pearl River Delta

摘要：Pb and Cd contents in 13 plantation tree species (leaf and branch components), soil, water (groundwater and river water) at a young (3-5 year-old) seashore afforestation stand were investigated in Nansha district, Guangzhou city in southern China. The results showed that (1) soil, rather than water or trees, had the highest content of both Pb (averagely 48.79 mg/kg) and Cd (0.50 mg/kg), demonstrating that soil might function as a major reservoir for extraneously derived heavy metals; (2) Pb content was higher in branches than in leaves, but Cd content appeared similar in both components, implying possibly different accumulation mechanisms in trees; (3) Pb and Cd appeared to accumulate differently among some tree taxa, whereas almost no significant difference was detected between introduced and indigenous species. The study indicated that trees were potentially useful to remediate sites contaminated with Pb and Cd in the urbanized areas.