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During the first 25\u2009years after afforestation of former agricultural lands there was a significant increase in content of C<jats:sub>tot<\/jats:sub>, N<jats:sub>tot<\/jats:sub>, K<jats:sup>+<\/jats:sup>, Fe<jats:sup>3+<\/jats:sup>, Mn<jats:sup>2+<\/jats:sup> and available P in the topsoil (0\u201310\u2009cm and 11\u201320\u2009cm) of Dystric Arenosols soils, which are deficient in organic matter. Such trends were not evident in organic matter rich Endostagnic Umbrisols soils, in which exchangeable K<jats:sup>+<\/jats:sup> concentration decreased and exchangeable Fe<jats:sup>3+<\/jats:sup> and Al<jats:sup>3+<\/jats:sup> concentration increased.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>The results show that the effects of grey alder on soil chemical properties depend on initial soil properties. The invasion of agricultural land by grey alder leads to spatial variability of soil chemical properties creating a mosaic pattern.<\/jats:p>\n<\/jats:sec>","DOI":"10.1186\/s40663-020-00253-0","type":"journal-article","created":{"date-parts":[[2020,6,19]],"date-time":"2020-06-19T09:02:55Z","timestamp":1592557375000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Effects of afforestation of agricultural land with grey alder (Alnus incana (L.) 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