Alterations in forest detritus inputs influence soil carbon concentration and soil respiration in a central-european deciduous forest

István Fekete, Zsolt Kotroczó, Csaba Varga, P. Nagy, Gábor Várbíró, Richard D. Bowden, János Attila Tóth, Kate Lajtha

Research output: Article

39 Citations (Scopus)

Abstract

In a Quercetum petraeae-cerris forest in northeastern Hungary, we examined effects of litter input alterations on the quantity and quality soil carbon stocks and soil CO2 emissions. Treatments at the Síkfo kút DIRT (Detritus Input and Removal Treatments) experimental site include adding (by doubling) of either leaf litter (DL) or wood (DW) (including branches, twigs, bark), and removing all aboveground litter (NL), all root inputs by trenching (NR), or removing all litter inputs (NI). Within 4 years we saw a significant decrease in soil carbon (C) concentrations in the upper 15cm for root exclusion plots. Decreases in C for the litter exclusion treatments appeared later, and were smaller than declines in root exclusion plots, highlighting the role of root detritus in the formation of soil organic matter in this forest. By year 8 of the experiment, surface soil C concentrations were lower than Control plots by 32% in NI, 23% in NR and 19% in NL. Increases in soil C in litter addition treatments were less than C losses from litter exclusion treatments, with surface C increasing by 12% in DL and 6% in DW. Detritus additions and removals had significant effects on soil microclimate, with decreases in seasonal variations in soil temperature (between summer and winter) in Double Litter plots but enhanced seasonal variation in detritus exclusion plots. Carbon dioxide (CO2) emissions were most influenced by detritus input quantity and soil organic matter concentration when soils were warm and moist. Clearly changes in detritus inputs from altered forest productivity, as well as altered litter impacts on soil microclimate, must be included in models of soil carbon fluxes and pools with expected future changes in climate.

Original languageEnglish
Pages (from-to)106-114
Number of pages9
JournalSoil Biology and Biochemistry
Volume74
DOIs
Publication statusPublished - 2014

Fingerprint

soil respiration
deciduous forests
soil carbon
deciduous forest
detritus
Respiration
litter
Soil
Carbon
carbon
soil
carbon dioxide
microclimate
Microclimate
soil organic matter
seasonal variation
branchwood
trenching
Forests
carbon flux

ASJC Scopus subject areas

  • Soil Science
  • Microbiology

Cite this

Alterations in forest detritus inputs influence soil carbon concentration and soil respiration in a central-european deciduous forest. / Fekete, István; Kotroczó, Zsolt; Varga, Csaba; Nagy, P.; Várbíró, Gábor; Bowden, Richard D.; Tóth, János Attila; Lajtha, Kate.

In: Soil Biology and Biochemistry, Vol. 74, 2014, p. 106-114.

Research output: Article

Fekete, István ; Kotroczó, Zsolt ; Varga, Csaba ; Nagy, P. ; Várbíró, Gábor ; Bowden, Richard D. ; Tóth, János Attila ; Lajtha, Kate. / Alterations in forest detritus inputs influence soil carbon concentration and soil respiration in a central-european deciduous forest. In: Soil Biology and Biochemistry. 2014 ; Vol. 74. pp. 106-114.
@article{1c2d4bbd781647e89fa9092f7cccf17f,
title = "Alterations in forest detritus inputs influence soil carbon concentration and soil respiration in a central-european deciduous forest",
abstract = "In a Quercetum petraeae-cerris forest in northeastern Hungary, we examined effects of litter input alterations on the quantity and quality soil carbon stocks and soil CO2 emissions. Treatments at the S{\'i}kfo k{\'u}t DIRT (Detritus Input and Removal Treatments) experimental site include adding (by doubling) of either leaf litter (DL) or wood (DW) (including branches, twigs, bark), and removing all aboveground litter (NL), all root inputs by trenching (NR), or removing all litter inputs (NI). Within 4 years we saw a significant decrease in soil carbon (C) concentrations in the upper 15cm for root exclusion plots. Decreases in C for the litter exclusion treatments appeared later, and were smaller than declines in root exclusion plots, highlighting the role of root detritus in the formation of soil organic matter in this forest. By year 8 of the experiment, surface soil C concentrations were lower than Control plots by 32{\%} in NI, 23{\%} in NR and 19{\%} in NL. Increases in soil C in litter addition treatments were less than C losses from litter exclusion treatments, with surface C increasing by 12{\%} in DL and 6{\%} in DW. Detritus additions and removals had significant effects on soil microclimate, with decreases in seasonal variations in soil temperature (between summer and winter) in Double Litter plots but enhanced seasonal variation in detritus exclusion plots. Carbon dioxide (CO2) emissions were most influenced by detritus input quantity and soil organic matter concentration when soils were warm and moist. Clearly changes in detritus inputs from altered forest productivity, as well as altered litter impacts on soil microclimate, must be included in models of soil carbon fluxes and pools with expected future changes in climate.",
keywords = "Climate change, Detritus manipulation, DIRT, Oak forest, Soil CO 2, Soil moisture",
author = "Istv{\'a}n Fekete and Zsolt Kotrocz{\'o} and Csaba Varga and P. Nagy and G{\'a}bor V{\'a}rb{\'i}r{\'o} and Bowden, {Richard D.} and T{\'o}th, {J{\'a}nos Attila} and Kate Lajtha",
year = "2014",
doi = "10.1016/j.soilbio.2014.03.006",
language = "English",
volume = "74",
pages = "106--114",
journal = "Soil Biology and Biochemistry",
issn = "0038-0717",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Alterations in forest detritus inputs influence soil carbon concentration and soil respiration in a central-european deciduous forest

AU - Fekete, István

AU - Kotroczó, Zsolt

AU - Varga, Csaba

AU - Nagy, P.

AU - Várbíró, Gábor

AU - Bowden, Richard D.

AU - Tóth, János Attila

AU - Lajtha, Kate

PY - 2014

Y1 - 2014

N2 - In a Quercetum petraeae-cerris forest in northeastern Hungary, we examined effects of litter input alterations on the quantity and quality soil carbon stocks and soil CO2 emissions. Treatments at the Síkfo kút DIRT (Detritus Input and Removal Treatments) experimental site include adding (by doubling) of either leaf litter (DL) or wood (DW) (including branches, twigs, bark), and removing all aboveground litter (NL), all root inputs by trenching (NR), or removing all litter inputs (NI). Within 4 years we saw a significant decrease in soil carbon (C) concentrations in the upper 15cm for root exclusion plots. Decreases in C for the litter exclusion treatments appeared later, and were smaller than declines in root exclusion plots, highlighting the role of root detritus in the formation of soil organic matter in this forest. By year 8 of the experiment, surface soil C concentrations were lower than Control plots by 32% in NI, 23% in NR and 19% in NL. Increases in soil C in litter addition treatments were less than C losses from litter exclusion treatments, with surface C increasing by 12% in DL and 6% in DW. Detritus additions and removals had significant effects on soil microclimate, with decreases in seasonal variations in soil temperature (between summer and winter) in Double Litter plots but enhanced seasonal variation in detritus exclusion plots. Carbon dioxide (CO2) emissions were most influenced by detritus input quantity and soil organic matter concentration when soils were warm and moist. Clearly changes in detritus inputs from altered forest productivity, as well as altered litter impacts on soil microclimate, must be included in models of soil carbon fluxes and pools with expected future changes in climate.

AB - In a Quercetum petraeae-cerris forest in northeastern Hungary, we examined effects of litter input alterations on the quantity and quality soil carbon stocks and soil CO2 emissions. Treatments at the Síkfo kút DIRT (Detritus Input and Removal Treatments) experimental site include adding (by doubling) of either leaf litter (DL) or wood (DW) (including branches, twigs, bark), and removing all aboveground litter (NL), all root inputs by trenching (NR), or removing all litter inputs (NI). Within 4 years we saw a significant decrease in soil carbon (C) concentrations in the upper 15cm for root exclusion plots. Decreases in C for the litter exclusion treatments appeared later, and were smaller than declines in root exclusion plots, highlighting the role of root detritus in the formation of soil organic matter in this forest. By year 8 of the experiment, surface soil C concentrations were lower than Control plots by 32% in NI, 23% in NR and 19% in NL. Increases in soil C in litter addition treatments were less than C losses from litter exclusion treatments, with surface C increasing by 12% in DL and 6% in DW. Detritus additions and removals had significant effects on soil microclimate, with decreases in seasonal variations in soil temperature (between summer and winter) in Double Litter plots but enhanced seasonal variation in detritus exclusion plots. Carbon dioxide (CO2) emissions were most influenced by detritus input quantity and soil organic matter concentration when soils were warm and moist. Clearly changes in detritus inputs from altered forest productivity, as well as altered litter impacts on soil microclimate, must be included in models of soil carbon fluxes and pools with expected future changes in climate.

KW - Climate change

KW - Detritus manipulation

KW - DIRT

KW - Oak forest

KW - Soil CO 2

KW - Soil moisture

UR - http://www.scopus.com/inward/record.url?scp=84897059951&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897059951&partnerID=8YFLogxK

U2 - 10.1016/j.soilbio.2014.03.006

DO - 10.1016/j.soilbio.2014.03.006

M3 - Article

VL - 74

SP - 106

EP - 114

JO - Soil Biology and Biochemistry

JF - Soil Biology and Biochemistry

SN - 0038-0717

ER -