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Modeling persistence of coarse woody debris residuals in boreal forests as an ecological property

Menichetti, Lorenzo and Makinen, Harri and Stendahl, Johan and Ågren, Göran and Hyvönen, Riitta (2021). Modeling persistence of coarse woody debris residuals in boreal forests as an ecological property. Ecosphere. 12 , e03792
[Research article]

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Abstract

There is a trade-off between leaving coarse woody debris (CWD) in the stand, providing desirable ecosystem services, and harvesting it. To consider this trade-off, forest management needs to model describing the decomposition of CWD. When a trunk is lying on the ground, it can be attacked by microorganisms faster than when it is still standing. Current decomposition models fail to account for these local differences in processes, which may give rise to errors in the estimation of stand C balance. We extended the Q decomposition model to represent the influences of tree species and the local position of the wood. We utilized data from two studies on long-term deadwood decomposition in forests. We first calibrated the model on the whole dataset, and then divided the data into different CWD decomposition classes, and then allowed some of the parameters to vary between different CWD decomposition classes. The calibrations were performed within a Bayesian framework, which allowed for a statistically sound comparison of the calibration results. The difference between the remaining C mass predicted by the two versions of the model, one considering one single calibration for all decomposition classes and one specific to decomposition classes, depended on the CWD class but was in general substantial. Some classes, when modeled with a specific parameterization, resulted in C stocks after 50 yr 1-5 times less than that predicted by the single parameterization model. Logs decayed faster than snags, and birch wood much faster than pine and spruce wood, with little difference between the two conifers. Russian spruce wood decomposed somewhat faster than Finnish spruce wood. Incorporating our calibration, describing specifically the processes driving the wood decay locally, into a C balance model of forests may change model estimates substantially.

Authors/Creators:Menichetti, Lorenzo and Makinen, Harri and Stendahl, Johan and Ågren, Göran and Hyvönen, Riitta
Title:Modeling persistence of coarse woody debris residuals in boreal forests as an ecological property
Series Name/Journal:Ecosphere
Year of publishing :2021
Volume:12
Article number:e03792
Number of Pages:20
Publisher:WILEY
ISSN:2150-8925
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Bayesian statistics, Betula pendula, CWD decomposition, forest C balance, forest management, GHG, Picea abies, Pinus sylvestris, Q model
URN:NBN:urn:nbn:se:slu:epsilon-p-114647
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114647
Additional ID:
Type of IDID
DOI10.1002/ecs2.3792
Web of Science (WoS)000723142700017
ID Code:26290
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology

(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:09 Dec 2021 13:25
Metadata Last Modified:09 Dec 2021 13:31

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