Forest biomass accumulation is an important source of acidity to forest soils: Data from Swedish inventories of forests and soils 1955 to 2010.

Autor: Karltun E; Department of Soil and Environment, SLU, Box 7014, 750 07, Uppsala, Sweden. erik.karltun@slu.se., Stendahl J; Department of Soil and Environment, SLU, Box 7014, 750 07, Uppsala, Sweden., Iwald J; Department of Soil and Environment, SLU, Box 7014, 750 07, Uppsala, Sweden., Löfgren S; Department of Aquatic Sciences and Assessment, SLU, Box 7050, 750 07, Uppsala, Sweden.
Jazyk: angličtina
Zdroj: Ambio [Ambio] 2022 Jan; Vol. 51 (1), pp. 199-208. Date of Electronic Publication: 2021 Mar 29.
DOI: 10.1007/s13280-021-01540-y
Abstrakt: The input of acidity to Swedish forest soils through forestry between 1955 and 2010 is compared with the acid input from atmospheric deposition. Depending on region, input of acidity from forestry was the minor part (25-45%) of the study period's accumulated acid input but is now the dominating source (140-270 mol c ha -1  year -1 ). The net uptake of cations due to the increase in standing forest biomass, ranged between 35 and 45% of the forestry related input of acidity while whole-tree harvesting, introduced in the late 1990s, contributed only marginally (< 2%). The geographical gradient in acid input is reflected in the proportion of acidified soils in Sweden but edaphic properties contribute to variations in acidification sensitivity. It is important to consider the acid input due to increases in standing forest biomass in acidification assessments since it is long-term and quantitatively important.
(© 2021. The Author(s).)
Databáze: MEDLINE
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