tailieunhanh - Schröder et al. Environmental Sciences Europe 2011, 23:19

Schröder et al. Environmental Sciences Europe 2011, 23:19 RESEARCH Open Access Mapping atmospheric depositions of cadmium and lead in Germany based on EMEP deposition data and the European Moss Survey 2005 Kartierung atmosphärischer Depositionen von Blei und Cadmium in Deutschland mit Daten aus dem EMEP-Messnetz und dem europäischen MoosMonitoring 2005 Winfried Schröder1†, Marcel Holy1†, Roland Pesch*1†, Harald Zechmeister2† Harry Harmens3 and Ilia Ilyin4 Abstract Background Every five years since 1990, the European Heavy Metals in Mosses Survey provided data on atmospheric heavy metal bioaccumulations in mosses throughout Europe at a high spatial resolution. The moss data show the effectiveness of air quality control policies:. | Schroder et al. Environmental Sciences Europe 2011 23 19 http content 23 1 19 o Environmental Sciences Europe a SpringerOpen Journal RESEARCH Open Access Mapping atmospheric depositions of cadmium and lead in Germany based on EMEP deposition data and the European Moss Survey 2005 Kartierung atmospharischer Depositionen von Blei und Cadmium in Deutschland mit Daten aus dem EMEP-Messnetz und dem europaischen Moos-Monitoring 2005 Winfried Schroder13 Marcel Holy1 Roland Pesch 1 Harald Zechmeister2t Harry Harmens3 and Ilia Ilyin4 Abstract Background Every five years since 1990 the European Heavy Metals in Mosses Survey provided data on atmospheric heavy metal bioaccumulations in mosses throughout Europe at a high spatial resolution. The moss data show the effectiveness of air quality control policies for Germany the metal bioaccumulations decreased between 1990 and 2000 whilst they increased from 2000 to 2005. This investigation is intended to show how the moss data could be used to map atmospheric depositions of Cd and Pb which later on might serve for the calculation of Critical Loads Exceedances. In addition we compared how much heavy metal concentrations in mosses in Germany deviate from background data observed in Greenland. Methods Mapping heavy metals with a high spatial resolution for the German territory was conducted according to the following methodology EMEP deposition maps 50 km by 50 km spatial resolution were intersected within a GIS with Kriging maps on Cd and Pb accumulations in mosses EMEP European Monitoring and Evaluation Programme is a scientifically based and politically driven programme under the Convention on Long-range Transboundary Air Pollution for international co-operation to solve transboundary air pollution problems . Subsequently the statistical relations between the EMEP modelled depositions and the bioaccumulations in mosses were quantified by using regression analysis. The regression functions were used to transform .