Počet záznamů: 1
Soil organic carbon stability in forests: Distinct effects of tree species identity and traits
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SYSNO ASEP 0505463 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Soil organic carbon stability in forests: Distinct effects of tree species identity and traits Tvůrce(i) Angst, Gerrit (BC-A) RID, ORCID
Mueller, K.E. (US)
Eissenstat, D.M. (US)
Trumbore, S. (DE)
Freeman, K.H. (US)
Hobbie, S.E. (US)
Chorover, J. (US)
Oleksyn, J. (US)
Reich, P. B. (US)
Mueller, C.W. (DE)Zdroj.dok. Global Change Biology. - : Wiley - ISSN 1354-1013
Roč. 25, č. 4 (2019), s. 1529-1546Poč.str. 18 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova 14 C ; 15 N ; common garden ; heterotrophic respiration ; mineral associated SOM ; physical fractionation ; stoichiometry Vědní obor RIV EF - Botanika Obor OECD Plant sciences, botany CEP LM2015075 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_013/0001782 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA18-24138S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora BC-A - RVO:60077344 UT WOS 000461817500024 EID SCOPUS 85061045420 DOI 10.1111/gcb.14548 Anotace Rising atmospheric CO 2 concentrations have increased interest in the potential for forest ecosystems and soils to act as carbon (C) sinks. While soil organic C contents often vary with tree species identity, little is known about if, and how, tree species influence the stability of C in soil. Using a 40 year old common garden experiment with replicated plots of eleven temperate tree species, we investigated relationships between soil organic matter (SOM) stability in mineral soils and 17 ecological factors (including tree tissue chemistry, magnitude of organic matter inputs to the soil and their turnover, microbial community descriptors, and soil physicochemical properties). We measured five SOM stability indices, including heterotrophic respiration, C in aggregate occluded particulate organic matter (POM) and mineral associated SOM, and bulk SOM δ 15 N and ∆ 14 C. The stability of SOM varied substantially among tree species, and this variability was independent of the amount of organic C in soils. Thus, when considering forest soils as C sinks, the stability of C stocks must be considered in addition to their size. Further, our results suggest tree species regulate soil C stability via the composition of their tissues, especially roots. Stability of SOM appeared to be greater (as indicated by higher δ 15 N and reduced respiration) beneath species with higher concentrations of nitrogen and lower amounts of acid insoluble compounds in their roots, while SOM stability appeared to be lower (as indicated by higher respiration and lower proportions of C in aggregate occluded POM) beneath species with higher tissue calcium contents. The proportion of C in mineral associated SOM and bulk soil ∆ 14 C, though, were negligibly dependent on tree species traits, likely reflecting an insensitivity of some SOM pools to decadal scale shifts in ecological factors. Strategies aiming to increase soil C stocks may thus focus on particulate C pools, which can more easily be manipulated and are most sensitive to climate change. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2020 Elektronická adresa https://onlinelibrary.wiley.com/doi/full/10.1111/gcb.14548
Počet záznamů: 1