DOI: 10.5194/gmd-13-783-2020
论文题名: Jena Soil Model (JSM v1.0; Revision 1934): A microbial soil organic carbon model integrated with nitrogen and phosphorus processes
作者: Yu L. ; Ahrens B. ; Wutzler T. ; Schrumpf M. ; Zaehle S.
刊名: Geoscientific Model Development
ISSN: 1991959X
出版年: 2020
卷: 13, 期: 2 语种: 英语
Scopus关键词: biomass allocation
; enzyme activity
; integrated approach
; leaf litter
; microbial community
; phosphorus
; soil analysis
; soil carbon
; soil microorganism
; soil organic matter
; stoichiometry
; Germany
; Fagus
英文摘要: Plant-soil interactions, such as the coupling of plants' below-ground biomass allocation with soil organic matter (SOM) decomposition, nutrient release and plant uptake, are essential to understand the response of carbon (C) cycling to global changes. However, these processes are poorly represented in the current terrestrial biosphere models owing to the simple first-order approach of SOM cycling and the ignorance of variations within a soil profile. While the emerging microbially explicit soil organic C models can better describe C formation and turnover, at present, they lack a full coupling to the nitrogen (N) and phosphorus (P) cycles with the soil profile. Here we present a new SOM model - the Jena Soil Model (JSM) - which is microbially explicit, vertically resolved and integrated with the N and P cycles. To account for the effects of nutrient availability and litter quality on decomposition, JSM includes the representation of enzyme allocation to different depolymerisation sources based on the microbial adaptation approach as well as of nutrient acquisition competition based on the equilibrium chemistry approximation approach. Herein, we present the model structure and basic features of model performance in a beech forest in Germany. The model reproduced the main SOM stocks and microbial biomass as well as their vertical patterns in the soil profile. We further tested the sensitivity of the model to parameterisation and showed that JSM is generally sensitive to changes in microbial stoichiometry and processes. © 2020. This work is distributed under the Creative Commons Attribution 4.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159188
Appears in Collections: 气候变化与战略
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作者单位: Max Planck Institute for Biogeochemistry, Hans-Knöll Str. 10, Jena, 07745, Germany; International Max Planck Research School (IMPRS), Global Biogeochemical Cycles, Jena, Germany
Recommended Citation:
Yu L.,Ahrens B.,Wutzler T.,et al. Jena Soil Model (JSM v1.0; Revision 1934): A microbial soil organic carbon model integrated with nitrogen and phosphorus processes[J]. Geoscientific Model Development,2020-01-01,13(2)