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Soil organic carbon content decreases in both surface and subsoil mineral horizons by simulated future increases in labile carbon inputs in a temperate coniferous forest
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SYSNO ASEP 0551571 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Soil organic carbon content decreases in both surface and subsoil mineral horizons by simulated future increases in labile carbon inputs in a temperate coniferous forest Tvůrce(i) Jílková, Veronika (BC-A) RID, ORCID
Jandová, K. (CZ)
Kukla, J. (CZ)
Cajthaml, Tomáš (MBU-M) RID, ORCIDZdroj.dok. Ecosystems. - : Springer - ISSN 1432-9840
Roč. 24, č. 8 (2021), s. 2028-2041Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova sugarcane sucrose ; carbon isotopes ; microbial biomass ; PLFA ; physical fractionation ; soil organic matter Vědní obor RIV DK - Kontaminace a dekontamin. půdy vč. pesticidů Obor OECD Environmental sciences (social aspects to be 5.7) Vědní obor RIV – spolupráce Mikrobiologický ústav - Ekologie - společenstva CEP GA17-08717S GA ČR - Grantová agentura ČR LM2015075 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_013/0001782 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora BC-A - RVO:60077344 ; MBU-M - RVO:61388971 UT WOS 000637632700001 EID SCOPUS 85103878634 DOI 10.1007/s10021-021-00632-w Anotace Soils represent important pools of soil organic carbon (SOC) that can be greatly influenced by labile C inputs, which are expected to increase in future due to CO2 enrichment of atmosphere and a concomitant rise in plant primary productivity. Studying effects of variable labile C inputs on SOC pool helps to understand how soils respond to global change. However, this knowledge is missing for coniferous forest soils despite being widespread throughout the northern temperate zone. We conducted a 7-month field manipulation experiment to study the effects of variable labile C inputs (simulated by additions of C-4 sucrose) on the C content in soil fractions and on microbial abundance in the organic (O), surface mineral (A), and subsoil mineral (B) horizons of a temperate coniferous forest soil. SOC in less-protected soil fractions and total organic C were substantially decreased by labile C additions that simulated future increases in C inputs. The SOC losses were comparable between the A and B horizon (40% vs. 30%). However, because sucrose availability estimated from its incorporation into soil fractions and microbial biomass sharply decreased with soil depth, the loss of C was higher in the B than in the A horizon when related to the amount of sucrose added. Utilization of sucrose was highest by fungi in the O horizon and by bacteria in the mineral soil horizons. The results indicate that future increases in labile C inputs to coniferous forest soils will cause rapid and substantial losses of SOC in both the surface and subsoil mineral horizons. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2022 Elektronická adresa https://link.springer.com/article/10.1007%2Fs10021-021-00632-w
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