DOI: 10.1016/j.atmosenv.2015.05.022
Scopus记录号: 2-s2.0-84930934015
论文题名: Lead distribution and possible sources along vertical zone spectrum of typical ecosystems in the Gongga Mountain, eastern Tibetan Plateau
作者: Luo J ; , Tang R ; , Sun S ; , Yang D ; , She J ; , Yang P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 115 起始页码: 132
结束页码: 140
语种: 英语
英文关键词: Atmospheric deposition
; Bio-indicator
; HYSPLIT model
; Pollution sources
; Root accumulation
Scopus关键词: Aluminum
; Atmospheric chemistry
; Deposition
; Ecology
; Ecosystems
; Landforms
; Lead
; Meteorological problems
; Plants (botany)
; Pollution
; Soils
; Anthropogenic activity
; Atmospheric depositions
; Decomposition characteristics
; Determination coefficients
; Eastern Tibetan plateau
; HYSPLIT model
; Pollution sources
; Root accumulation
; Soil pollution
; lead
; atmospheric deposition
; atmospheric pollution
; bioaccumulation
; bioindicator
; ecosystem health
; lead
; pollutant source
; pollutant transport
; root
; soil horizon
; spatial distribution
; adsorption
; air
; Article
; atmospheric deposition
; biomass
; climate
; decomposition
; ecosystem
; forest
; mass
; mining
; plant
; plant leaf
; precipitation
; priority journal
; soil
; China
; Gongga Mountain
; Qinghai-Xizang Plateau
; Sichuan
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: A total of 383 samples from soil, plant, litterfall and precipitation in four typical ecosystems of Gongga Mountain were collected. Pb concentrations of samples were measured and analyzed. The results showed mean Pb concentrations in different soil layers were in the order of O>A>C, and mean Pb concentrations of the aboveground parts of plant was 3.60±2.54mgkg-1, with the minimum value of 0.77mgkg-1 and the maximum value of 10.90mgkg-1. Pb concentrations in soil's O-horizon and A-horizon showed a downward trend with increasing elevation (the determination coefficient R2 was 0.9478, 0.7918 and 0.9759 respectively). In contrast to other soil layers, the level of Pb concentrations in O-horizon (incomplete decomposition) was significantly high. Litterfall decomposition, atmospheric deposition and the unique climate could be main factors leading high Pb accumulation in soil's O-horizon. What's more, significant correlation (R2=0.8126, P<0.05) was found between Pb concentrations in fine roots and soil's A-horizon confirms that fine roots could adsorb and accumulate Pb materials in soil. In general, the fact that Pb inputted into the typical ecosystems in the Gongga Mountain via long-range transportation and deposition of the atmosphere from external Pb sources could be confirmed by the HYSPLIT model and the ratio of CPb /CAl in plants (leaves) and CPb /CAl in litterfall. The mining activities and increasing anthropogenic activities (tourism development) could be main sources of Pb in this area. In order to better understand Pb sources and eco-risks of these typical ecosystems, litterfall decomposition characteristics, biomass of productivity of forest ecosystem, Pb isotopic tracing among air mass, twigs, leaves, litterfall and O-horizon soil in this vertical belt should also be taken into consideration. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81652
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and oMinistry of Water Conservancy, Chengdu, China; University of the Chinese Academy of Sciences, Beijing, China; Shaanxi University of Technology, Hanzhong, China
Recommended Citation:
Luo J,, Tang R,, Sun S,et al. Lead distribution and possible sources along vertical zone spectrum of typical ecosystems in the Gongga Mountain, eastern Tibetan Plateau[J]. Atmospheric Environment,2015-01-01,115