GEMAS: Geochemical distribution of Mg in agricultural soil of Europe

作者：Philippe Négrel, Anna Ladenberger, Clemens Reimann, Manfred Birke, Alecos Demetriades, Martiya Sadeghi, Stefano Albanese, Madelen Andersson, Rainer Baritz, Maria João Batista, A. Bel‐lan, Domenico Cicchella, Benedetto De Vivo, W. De Vos, Enrico Dinelli, M. Ďuriš, A. Dusza-Dobek, Mona Eklund, Vibeke Ernstsen, Peter Filzmoser, Belinda Flem, Dee Flight, Sean T. Forrester, M. Fuchs, Ubul Fügedi, A. Gilucis, Mateja Gosar, Virgilija Gregorauskiene, W. de Groot, A. Gulan, Josip Halamić, Edith Haslinger, P. Hayoz, Richard A. Hoffmann, Jurian A Hoogewerff, Hazim Hrvatović, Stjepan Husnjak, L. Janik, Győző Jordán, M. Kaminari, Jason K. Kirby, J. Kivisilla, V. Klos, F. Krone, P. Kwećko, L. Kuti, Annamaria Lima, J. Locutura, D. P. Lucivjansky, A. Mann, Daniela Mackových, Jörg Matschullat, Mike John McLaughlin, B. I. Malyuk, R. Maquil, Reto Giulio Meuli, Gerben Mol, Patrick O’Connor, R. K. Oorts, Rolf Tore Ottesen, Anna Pasieczna, W. Petersell, Sebastian Pfleiderer, Michal Poňavič, S. Pramuka, C. Prazeres, Uwe Rauch, S. Radusinović, I. Salpeteur, Ray Scanlon, A. Schedl, Andreas J. Scheib, Ilse Schoeters, Peter Šefčík, E. Sellersjö, Ferid Skopljak, Igor Slaninka, Ajka Šorša, R. Srvkota, Trajče Stafilov, Timo Tarvainen, V. Trendavilov, Paolo Valera, Violaine Verougstraete, D. Vidojević, Andreas M. Zissimos, Z. Zomeni · 发表于：Journal of Geochemical Exploration · 年份：2020 · DOI：10.1016/j.gexplo.2020.106706 · 被引用次数：22 · 研究领域：Heavy metals in environment、Geochemistry and Elemental Analysis、Geology and Paleoclimatology Research

Agricultural soil (Ap-horizon, 0–20 cm) samples were collected from 33 European countries as part of the GEMAS (GEochemical Mapping of Agricultural and grazing land Soil) soil-mapping project. The Mg data derived from total concentrations (XRF) and two acid digestion methods, aqua regia (AR) and Mobile Metal Ion (MMI®), were used to provide an overview of its spatial distribution in soil at the continental-scale. Magnesium is one of the most abundant elements in the Earth's crust and essential nutrient for plants and animals and its presence in soil is, therefore, important for soil quality evaluation. In this study, the geochemical behaviour of Mg in European agricultural soil was investigated in relation to a variety of soil parent materials, climatic zones, and landscapes. The chemical composition of soil reflects mostly the primary mineralogy of the source bedrock, and the superimposed effects of pre- and post-depositional chemical weathering, controlled by element mobility and formation of secondary phases such as clays. Low Mg concentrations in agricultural soil occur in regions with quartz-rich glacial sediments (Poland, Baltic States, N. Germany), and in soil developed on quartz-rich sandstone parent materials (e.g., central Sweden). High Mg concentrations occur in soil developed over mafic lithologies such as ophiolite belts and in carbonate-rich regions, including karst areas. The maximum extent of the last glaciation is well defined by a Mg concentration break, whi...