Mostra el registre d'ítem simple
Individual-based modelling of carbon and nitrogen dynamics in soils: parameterization and sensitivity analysis of microbial components
dc.contributor.author | Gras Moreu, Anna Maria |
dc.contributor.author | Ginovart Gisbert, Marta |
dc.contributor.author | Valls Ribas, Joaquim |
dc.contributor.author | Baveye, Philippe C. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III |
dc.date.accessioned | 2011-05-05T16:21:43Z |
dc.date.available | 2011-05-05T16:21:43Z |
dc.date.created | 2011 |
dc.date.issued | 2011 |
dc.identifier.citation | Gras, A. [et al.]. Individual-based modelling of carbon and nitrogen dynamics in soils: parameterization and sensitivity analysis of microbial components. "Ecological modeling", 2011. |
dc.identifier.issn | 0304-3800 |
dc.identifier.uri | http://hdl.handle.net/2117/12485 |
dc.description.abstract | The fate of soil carbon and nitrogen compounds in soils in response to climate change is currently the object of significant research. In particular, there is much interest in the development of a new generation of micro-scale models of soil ecosystems processes. Crucial to the elaboration of such models is the ability to describe the growth and metabolism of small numbers of individual microorganisms, distributed in a highly heterogeneous environment. In this context, the key objective of the research described in this article was to further develop an individual-based soil organic matter model, INDISIM-SOM, first proposed a few years ago, and to assess its performance with a broader experimental data set than previously considered. INDISIM-SOM models the dynamics and evolution of carbon and nitrogen associated with organic matter in soils. The model involves a number of state variables and parameters related to soil organic matter and microbial activity, including growth and decay of microbial biomass, temporal evolutions of easily hydrolysable N, mineral N in ammonium and nitrate, CO2 and O2. The present article concentrates on the biotic components of the model. Simulation results demonstrate that the model can be calibrated to provide good fit to experimental data from laboratory incubation experiments performed on three different types of Mediterranean soils. In addition, analysis of the sensitivity toward its biotic parameters shows that the model is far more sensitive to some parameters, i.e., the microbial maintenance energy and the probability of random microbial death, than to others. These results suggest that, in the future, research should focus on securing better measurements of these parameters, on environmental determinants of the switch from active to dormant states, and on the causes of random cell death in soil ecosystems. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria agroalimentària::Agricultura::Agricultura sostenible |
dc.subject | Àrees temàtiques de la UPC::Enginyeria agroalimentària::Agricultura::Biotecnologia i millora genètica vegetal |
dc.subject.lcsh | Humus |
dc.subject.lcsh | soil microbial ecology |
dc.subject.other | Individual-based model Soil microbialactivity Soil organicmatter C andNmineralization Microbial parameters |
dc.title | Individual-based modelling of carbon and nitrogen dynamics in soils: parameterization and sensitivity analysis of microbial components |
dc.type | Article |
dc.subject.lemac | Sòl, Ús del -- Aspectes ambientals |
dc.contributor.group | Universitat Politècnica de Catalunya. SC-SIMBIO - Sistemes complexos. Simulació discreta de materials i de sistemes biològics |
dc.identifier.doi | 10.1016/j.ecolmodel.2011.03.009 |
dc.rights.access | Open Access |
local.identifier.drac | 5597076 |
dc.description.version | Postprint (published version) |
local.citation.author | Gras, A.; Ginovart, M.; Valls, J.; Baveye, P. |
local.citation.publicationName | Ecological modeling |
Fitxers d'aquest items
Aquest ítem apareix a les col·leccions següents
-
Articles de revista [102]
-
Articles de revista [603]
-
Articles de revista [3.259]
-
Articles de revista [1.052]