Vertical Redistribution of Soil Organic Carbon Pools After Twenty Years of Nitrogen Addition in Two Temperate Coniferous Forests
| العنوان: | Vertical Redistribution of Soil Organic Carbon Pools After Twenty Years of Nitrogen Addition in Two Temperate Coniferous Forests |
|---|---|
| المؤلفون: | Katharina M. Keibinger, Wolfgang Wanek, Martin H. Gerzabek, Eugenio Díaz-Pinés, Frank Hagedorn, Stefanie Müller, Stefan J. Forstner, Viktoria Wechselberger, Patrick Scheppi, Per Gundersen, Michael Tatzber, Sophie Zechmeister-Boltenstern |
| المصدر: | Ecosystems (New York, N.y.) Forstner, S J, Wechselberger, V, Mueller, S, Keibinger, K M, Diaz-Pines, E, Wanek, W, Scheppi, P, Hagedorn, F, Gundersen, P, Tatzber, M, Gerzabek, M H & Zechmeister-Boltenstern, S 2019, ' Vertical Redistribution of Soil Organic Carbon Pools After Twenty Years of Nitrogen Addition in Two Temperate Coniferous Forests ', Ecosystems, vol. 22, no. 2, pp. 379-400 . https://doi.org/10.1007/s10021-018-0275-8 |
| بيانات النشر: | Springer Nature, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, 010504 meteorology & atmospheric sciences, carbon mineralization, fine roots, 010603 evolutionary biology, 01 natural sciences, Article, soil pH, Soil pH, Temperate climate, nitrogen saturation, Environmental Chemistry, soil carbon, Ecology, Evolution, Behavior and Systematics, Temperate coniferous forest, 0105 earth and related environmental sciences, Topsoil, geography, geography.geographical_feature_category, Ecology, Soil carbon, 15. Life on land, Throughfall, carbon sequestration, nitrogen deposition, Agronomy, 13. Climate action, Soil water, Norway spruce, Environmental science, Temperate rainforest, exchangeable cations |
| الوصف: | Nitrogen (N) inputs from atmospheric deposition can increase soil organic carbon (SOC) storage in temperate and boreal forests, thereby mitigating the adverse effects of anthropogenic CO2 emissions on global climate. However, direct evidence of N-induced SOC sequestration from low-dose, long-term N addition experiments (that is, addition of 10 years) is scarce worldwide and virtually absent for European temperate forests. Here, we examine how tree growth, fine roots, physicochemical soil properties as well as pools of SOC and soil total N responded to 20 years of regular, low-dose N addition in two European coniferous forests in Switzerland and Denmark. At the Swiss site, the addition of 22 kg N ha−1 y−1 (or 1.3 times throughfall deposition) stimulated tree growth, but decreased soil pH and exchangeable calcium. At the Danish site, the addition of 35 kg N ha−1 y−1 (1.5 times throughfall deposition) impaired tree growth, increased fine root biomass and led to an accumulation of N in several belowground pools. At both sites, elevated N inputs increased SOC pools in the moderately decomposed organic horizons, but decreased them in the mineral topsoil. Hence, long-term N addition led to a vertical redistribution of SOC pools, whereas overall SOC storage within 30 cm depth was unaffected. Our results imply that an N-induced shift of SOC from older, mineral-associated pools to younger, unprotected pools might foster the vulnerability of SOC in temperate coniferous forest soils. Electronic supplementary material The online version of this article (10.1007/s10021-018-0275-8) contains supplementary material, which is available to authorized users. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62086e2ae8f20b3cef1ca8565ffda31e https://doi.org/10.1007/s10021-018-0275-8 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....62086e2ae8f20b3cef1ca8565ffda31e |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |