文献类型：期刊文献

英文题名：Removal of Polycyclic Aromatic Hydrocarbons from Precipitation in an Urban Forest of Guangzhou, South China

作者：Chen, Bufeng[1] Pei, Nancai[1] Huang, Junbiao[2] Liu, Shuguang[3] Zhang, Na[4] Xiao, Yihua[1] Pan, Yongjun[1]

第一作者：Chen, Bufeng

通信作者：Chen, BF[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[2]Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Kunming 650223, Peoples R China;[3]Cent South Univ Forestry & Technol, State Engn Lab Southern Forestry Appl Ecol & Tech, Changsha 410004, Hunan, Peoples R China;[4]Heibei Normal Univ Nationalities, Chengde 067000, Peoples R China

年份：2015

卷号：95

期号：2

起止页码：240-245

外文期刊名：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

收录：;EI(收录号：20152300902630);Scopus(收录号：2-s2.0-84937522099);WOS:【SCI-EXPANDED(收录号:WOS:000357481100017)】；

基金：The study was supported by the Special Fund for Forest Scientific Research in the Public Welfare (201404030105), NSF-China (31200471), Fundamental Research Funds of Chinese Academy of Forestry (CAFYBB2010003-2), Ministry of Finance of the People's Republic of China (RITFYWZX201208), Observation and Analysis of Forest Ecological Benefit in Guangzhou City (2008-2014), and the CFERN & GENE Award Funds on Ecological Paper.

语种：英文

外文关键词：Forest ecosystem; Organic contaminants; Ecological functions; Wet deposition; Scavenging efficiency

摘要：Polycyclic aromatic hydrocarbon (PAH) concentrations and fluxes were measured monthly in situ from rain events in an urban forest in the megapolitan city Guangzhou, China, to investigate impacts of forest canopy and soils on PAHs. Mean I 9-PAH pound concentrations were 107.5, 101.6, 106.3, 107.1 and 42.4 ng L-1 in precipitation, throughfall, seepage water at the 30 and 60 cm soil depth, and runoff, respectively, indicating a great decrease in the form of runoff. Meanwhile, annual fluxes of total PAHs decreased from precipitation (205.9 A mu g m(-2) year(-1)), to throughfall (156.3 A mu g m(-2) year(-1)), and to seepage water (65.3 A mu g m(-2) year(-1) at 30-cm soil depth and 7.5 A mu g m(-2) year(-1) at 60-cm soil depth), but increased in runoff (34.1 A mu g m(-2) year(-1)). When compared to precipitation, PAH fluxes decreased by 83.4 % in runoff, with 29 % contributed by forest canopy and 71 % by soils. Soil biodegradation explained 18.2 % of PAH reduction by the surface soil layer and 34.6 % by the middle soil layer.