Altitudinal dependence of PCBs and PBDEs in soil along the two sides of Mt. Sygera, southeastern Tibetan Plateau.
Altitudinal dependence of PCBs and PBDEs in soil along the two sides of Mt. Sygera, southeastern Tibetan Plateau.
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青藏高原东南部西格拉山两侧土壤中PCBs和PBDEs的海拔依赖性
DOI：
10.1038/s41598-018-32093-y
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发表时间：
2018-09-19
影响因子：
4.6
通讯作者：
Jiang G
中科院分区：
文献类型：
--
作者：
Meng W;Wang P;Yang R;Sun H;Matsiko J;Wang D;Zuo P;Li Y;Zhang Q;Jiang G
采集Mt表层土壤样品，多氯联苯和多溴二苯醚的平均浓度分别为177 pg g−1 dw和15 pg g−1 dw。对数变换toc归一化浓度与海拔高度的关系呈现出不同的趋势。在迎风面，较重的多氯联苯呈正相关；背风面海拔4100 ~ 4200 m，多氯联苯和多溴二苯醚浓度先升高后降低，与植被变化相对应。山两侧的观测差异表明与降水和森林冠层相关的关键因子不同。此外，在4200 m以上的站点，较重的PCB同系物（PCB-138、153和-180）的迎风-背风富集因子（W/L EFs）值要高一个数量级，这也表明植被对土壤中POPs的纵向积累起重要作用。这是揭示沿山两侧持久性有机污染物纵向积累差异的极少数研究之一。
Surface soil samples were collected from Mt. Sygera in the southeast of Tibetan Plateau to investigate the altitudinal distribution of PCBs and PBDEs along the two sides of the mountain. The average concentrations of PCBs and PBDEs were 177 pg g−1 dw and 15 pg g−1 dw, respectively. The relationships between the log-transformed TOC-normalized concentrations and the altitudes showed different trends on the two sides. On the windward side, there was a positive correlation for the heavier PCBs; while on the leeward side, the concentrations increased and then decreased for PCBs and PBDEs at the altitude of 4100–4200 m, corresponding to the change in vegetation. The observed discrepancy on the two sides of the mountain demonstrated different key factors associated with precipitation and the forest canopy. Additionally, values of windward-leeward Enrichment Factors (W/L EFs) for the heavier PCB congeners (PCB-138, 153, and -180) were an order of magnitude higher in sites above 4200 m, which also suggested that vegetation played an important role in the altitudinal accumulation of POPs in soil. This is one of the very few studies that have revealed the differences in altitudinal accumulation of POPs along the two sides of a mountain.
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影响因子：
11.4
作者：
Meijer, SN;Ockenden, WA;Jones, KC
通讯作者：
Jones, KC
影响因子：
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影响因子：
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作者：
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通讯作者：
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影响因子：
11.4
作者：
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通讯作者：
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影响因子：
11.4
作者：
Meijer, SN;Steinnes, E;Jones, KC
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