Enhanced particulate Hg export at the permafrost boundary, western Siberia
作者: Artem G. LimJeroen E. SonkeIvan V. KrickovRinat M. ManasypovSergey V. LoikoOleg S. Pokrovsky
作者单位: 1BIO-GEO-CLIM Laboratory, Tomsk State University, Tomsk, 634050, Russia
2Geosciences and Environment Toulouse, CNRS, Université Paul Sabatier, 14 Avenue Edouard Belin, 31400, Toulouse, France
3N. Laverov Federal Center for Integrated Arctic Research, IEPS, Russian Academy of Sciences, 163000, Arkhangelsk, Russia
刊名: Environmental Pollution, 2019, Vol.254 (Pt B)
来源数据库: Elsevier Journal
DOI: 10.1016/j.envpol.2019.113083
关键词: ParticulateSuspendedLandscapeBogLakeForestThawSiberia
英文摘要: Abstract(#br)Arctic permafrost soils contain large amounts of organic carbon and the pollutant mercury (Hg). Arctic warming and associated changes in hydrology, biogeochemistry and ecology risk mobilizing soil Hg to rivers and to the Arctic Ocean, yet little is known about the quantity, timing and mechanisms involved. Here we investigate seasonal particulate Hg (PHg) and organic carbon (POC) export in 32 small and medium rivers across a 1700 km latitudinal permafrost transect of the western Siberian Lowland. The PHg concentrations in suspended matter increased with decreasing watershed size. This underlines the significance of POC-rich small streams and wetlands in PHg export from watersheds. Maximum PHg concentrations and export fluxes were located in rivers at the beginning of...
全文获取路径: Elsevier  (合作)
影响因子:3.73 (2012)

  • particulate 粒子
  • permafrost 永冻土
  • export 输出
  • boundary 边界
  • western 谓的