Sökning: onr:"swepub:oai:slubar.slu.se:128261" >
Bayesian calibratio...
Bayesian calibration of the ICBM/3 soil organic carbon model constrained by data from long-term experiments and uncertainties of C inputs
-
- Menichetti, Lorenzo (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology
-
- Kätterer, Thomas (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology
-
- Bolinder, Martin (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology
-
(creator_code:org_t)
-
- 2024
- 2024
- Engelska.
-
Ingår i: Carbon Management. - 1758-3004. ; 15
- Relaterad länk:
-
https://pub.epsilon.... (primary) (Raw object) (free)
-
visa fler...
-
https://res.slu.se/i...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Models with various complexity can asses soil C sequestration in agriculture. In this study, we updated the Introductory Carbon Balance Model (ICBM) with 28 years of additional data and included multiple long-term bare fallow experiments for old pool kinetics. We validated the model with data from a new long-term sister experiment. The new calibration included uncertainty in the estimation of below-ground C inputs to soil. The model now considers above- and belowground and external C inputs separately (ICBM/3). The underlying mathematical approach is the same, with two state variables and a climatic parameter, and such simple structure remained robust enough to describe soil organic C dynamics over six decades. We tested including an inert soil C pool in the model structure, but it did not decrease the observed variance. Similarly, an intercept in the functions for estimating belowground C input from crop yield was not useful. Results suggest that root C contributes more to the old organic C pool than aboveground C inputs. We also evaluated parameters interactions, in particular between C inputs and their transformation into more stable soil C interacted and decomposition kinetics. We also describe new functions for estimating the ICBM climatic parameter in a more user-friendly way.
Ämnesord
- LANTBRUKSVETENSKAPER -- Annan lantbruksvetenskap -- Miljö- och naturvårdsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Other Agricultural Sciences -- Environmental Sciences related to Agriculture and Land-use (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas