Carbon, nitrogen, and phosphorus stoichiometry of organic matter in Swedish forest soils and its relationship with climate, tree species, and soil texture
Abstract ∘ N. The soils are a representative subsample of Swedish forest soils with a stand age > 60 years that were sampled for the Swedish Forest Soil Inventory. We found that the N stock of the organic layer increased by a factor of 7.5 from - ∘ C mean annual temperature (MAT), which is almost twice as much as the increase in the organic layer stock along the MAT gradient. The increase in the N stock went along with an increase in the N: P ratio of the organic layer by a factor of 2.1 from - ∘ C MAT (R 2 = 0.36, p < 0.001). Forests dominated by pine had higher C: N ratios in the organic layer and mineral soil down to a depth of 65 cm than forests dominated by spruce. Further, also the C: P ratio was increased in the pine-dominated forests compared to forests dominated by other tree species in the organic layer, while the C: OP ratio in the mineral soil was not elevated in pine forests. C, N, and OP contents in the mineral soil were higher in fine-textured soils than in coarse-textured soils by a factor of 2.3, 3.5, and 4.6, respectively. Thus, the effect of texture was stronger on OP than on N and C likely because OP adsorbs very rigidly to mineral surfaces. Further, we found that the P and K concentrations of the organic layer were inversely related to the organic layer stock, while the N: P ratio was positively related to the organic layer stock. Taken together, the results show that the N: P ratio of the organic layer was most strongly related to MAT. Further, the C: N ratio was most strongly related to dominant tree species even in the mineral subsoil. In contrast, the C: P ratio was only affected by dominant tree species in the organic layer, but the C: OP ratio in the mineral soil was hardly affected by tree species due to the strong effect of soil texture on the OP concentration.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Carbon, nitrogen, and phosphorus stoichiometry of organic matter in Swedish forest soils and its relationship with climate, tree species, and soil texture ; volume:19 ; number:8 ; year:2022 ; pages:2171-2186 ; extent:16
Biogeosciences ; 19, Heft 8 (2022), 2171-2186 (gesamt 16)
- Urheber
- DOI
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10.5194/bg-19-2171-2022
- URN
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urn:nbn:de:101:1-2022042805273192367435
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:25 MESZ
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Beteiligte
- Spohn, Marie
- Stendahl, Johan
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