Enhanced loss but limited mobility of pyrogenic and organic matter in continuous permafrost-affected forest soils

被引:8
作者
Schiedung, Marcus [1 ]
Belle, Severin-Luca [1 ]
Hoeschen, Carmen [2 ]
Schweizer, Steffen A. [2 ]
Abiven, Samuel [1 ,3 ,4 ]
机构
[1] Univ Zurich, Dept Geog, Winterthurerstr 190, CH-8057 Zurich, Switzerland
[2] Tech Univ Munich, TUM Sch Life Sci, Dept Life Sci Syst, Soil Sci, Emil Ramann Str 2, D-85354 Freising Weihenstephan, Germany
[3] PSL Univ, Inst Pierre Simon Laplace, Ecole Normale Super, Dept Geosci,Lab Geol, Rue Lhomond 24, F-75005 Paris, France
[4] PSL Univ, CNRS, CEREEP Ecotron Ile De France, ENS, Chemin Busseau 11, F-77140 St Pierre Les Nemours, France
基金
瑞士国家科学基金会;
关键词
Pyrogenic carbon; In-situ incubation; High-latitude soils; Soil carbon fractions; 13C-labeled organic matter; Nanoscale secondary ion mass spectrometry; DISSOLVED BLACK CARBON; MINERAL ASSOCIATIONS; LITTER DECOMPOSITION; TEMPERATE SOILS; CLIMATE-CHANGE; BIOCHAR; NITROGEN; CHARCOAL; DYNAMICS; FUNGAL;
D O I
10.1016/j.soilbio.2023.108959
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Pyrogenic organic matter (PyOM) is a product of incomplete combustion during wildfires and an important pool of soil organic carbon (SOC). The dynamics of PyOM and SOC in boreal and permafrost-affected soils are largely unknown, while storing large amounts of global carbon and being vulnerable to climate change. Here, we traced the vertical mobility, allocation in soil fractions and decomposition losses of highly 13C-labeled PyOM and its precursor ryegrass organic matter (grass OM) after two years of in-situ incubation in soil cores installed in the upper 10 cm of continuous (northern sites) and discontinuous to sporadic (southern sites) permafrost-affected forest soils in Northern Canada. At the northern sites, up to three times more PyOM was lost by decomposi-tion (39% of initial) compared to the southern sites (11% of initial). Losses of grass OM were substantial (69-84% of initial) and larger in southern soils. The vertical incorporation was limited and >90% of recovered PyOM and grass OM were found at the applied depth (0-3 cm). The PyOM strongly interacted with mineral surfaces, as indicated by around 40% recovered in the mineral-associated heavy density fractions (<63 mu m). Microscale analyses by SEM and NanoSIMS showed that PyOM was mainly allocated towards the fine fraction in a par-ticulate and aggregated form, highlighting the importance of abiotic processes for the incorporation of PyOM in permafrost-affected soils. The grass OM was mainly recovered in the mineral fractions at southern soils with enhanced allocation towards mineral surfaces as well as increased distribution at the microscale after initial decomposition, while it remained as particulate OM in northern soils. Our results highlight that permafrost -affected boreal forest soils are sensitive to fresh PyOM and OM inputs with substantial losses. Especially PyOM persistence depended on site and soil specific properties and not solely on its physico-chemical persis-tence. The responses are decoupled for PyOM and non-pyrolyzed OM and require a better understanding to evaluate carbon feedbacks of high-latitude soils with global warming and associated shifts in vegetation and wildfire regimes.
引用
收藏
页数:14
相关论文
共 106 条
  • [1] Pyrogenic carbon soluble fraction is larger and more aromatic in aged charcoal than in fresh charcoal
    Abiven, Samuel
    Hengartner, Pascal
    Schneider, Maximilian P. W.
    Singh, Nimisha
    Schmidt, Michael W. I.
    [J]. SOIL BIOLOGY & BIOCHEMISTRY, 2011, 43 (07) : 1615 - 1617
  • [2] Charcoal does not change the decomposition rate of mixed litters in a mineral cambisol: a controlled conditions study
    Abiven, Samuel
    Andreoli, Romano
    [J]. BIOLOGY AND FERTILITY OF SOILS, 2011, 47 (01) : 111 - 114
  • [3] Soil properties and combustion temperature: Controls on the decomposition rate of pyrogenic organic matter
    Abney, R. B.
    Jin, L.
    Berhe, A. A.
    [J]. CATENA, 2019, 182
  • [4] Adaptation, validation and application of the chemo-thermal oxidation method to quantify black carbon in soils
    Agarwal, Tripti
    Bucheli, Thomas D.
    [J]. ENVIRONMENTAL POLLUTION, 2011, 159 (02) : 532 - 538
  • [5] [Anonymous], 2014, International Soil Classification System for Naming Soils and Creating Legends for Soil Maps, P192
  • [6] Key drivers of pyrogenic carbon redistribution during a simulated rainfall event
    Belle, Severin-Luca
    Berhe, Asmeret Asefaw
    Hagedorn, Frank
    Santin, Cristina
    Schiedung, Marcus
    van Meerveld, Ilja
    Abiven, Samuel
    [J]. BIOGEOSCIENCES, 2021, 18 (03) : 1105 - 1126
  • [7] LITTER MASS-LOSS RATES AND DECOMPOSITION PATTERNS IN SOME NEEDLE AND LEAF LITTER TYPES - LONG-TERM DECOMPOSITION IN A SCOTS PINE FOREST .7.
    BERG, B
    EKBOHM, G
    [J]. CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE, 1991, 69 (07): : 1449 - 1456
  • [8] ilastik: interactive machine learning for (bio) image analysis
    Berg, Stuart
    Kutra, Dominik
    Kroeger, Thorben
    Straehle, Christoph N.
    Kausler, Bernhard X.
    Haubold, Carsten
    Schiegg, Martin
    Ales, Janez
    Beier, Thorsten
    Rudy, Markus
    Eren, Kemal
    Cervantes, Jaime I.
    Xu, Buote
    Beuttenmueller, Fynn
    Wolny, Adrian
    Zhang, Chong
    Koethe, Ullrich
    Hamprecht, Fred A.
    Kreshuk, Anna
    [J]. NATURE METHODS, 2019, 16 (12) : 1226 - 1232
  • [9] The Pyrogenic Carbon Cycle
    Bird, Michael I.
    Wynn, Jonathan G.
    Saiz, Gustavo
    Wurster, Christopher M.
    McBeath, Anna
    [J]. ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES, VOL 43, 2015, 43 : 273 - 298
  • [10] Importance of cryoturbation in redistributing organic carbon in permafrost-affected soils
    Bockheim, J. G.
    [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2007, 71 (04) : 1335 - 1342