A SIMULATION MODEL OF MESOPHYTIC PERENNIAL GRASSLANDS

Simple item page
dc.contributor.authorCastellaro, Giorgio
dc.contributor.authorAguilar, Claudio
dc.contributor.authorVera, Raul
dc.contributor.authorMorales, Luis
dc.date.accessioned2024-01-10T12:37:39Z
dc.date.available2024-01-10T12:37:39Z
dc.date.issued2012
dc.description.abstractGrasslands are complex ecosystems and their processes are affected by soil, meteorological, and management variables. In this context, dynamic simulation models are useful to understand these processes and to design grassland use strategies. The aim of this study was to develop and validate a simulation model of perennial pasture growth based on soil and climate variables. A first approach considered that soil fertility levels were adequate; therefore, soil water availability and phytomass level were the main variables affecting pasture growth. The subroutines considered were water balance, pasture growth, and root biomass dynamics. The hypotheses regarding the functioning of the system were formulated as a group of equations which were solved numerically with a program written in Visual Basic (R). Model validation was performed by statistical comparison between simulated DM and DM obtained from experiments conducted in Valdivia (39 degrees 47' S., 73 degrees 15' W; 9 m a.s.l.). In these experiments we measured DM accumulation on naturalized grassland and ryegrass (Lolium perenne L.)-white clover (Trifolium repens L.) pastures under frequent defoliation. Soil data, temperature, solar radiation, and rainfall were obtained from a meteorological station located in Valdivia. The coefficient of determination between simulated values and those measured in the experiments were higher in the DM accumulation (R-2 = 98%) simulations. When pasture was subjected to frequent defoliation, the degree of fit of the model was lower (R-2 = 60%); however, the model was able to predict the trend in the data.
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.4067/S0718-58392012000300013
dc.identifier.issn0718-5839
dc.identifier.urihttps://doi.org/10.4067/S0718-58392012000300013
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76897
dc.identifier.wosidWOS:000310170700013
dc.information.autorucAgronomía e Ing. Forestal;Aguilar C;S/I;49021
dc.information.autorucAgronomía e Ing. Forestal;Vera R;S/I;200231
dc.issue.numero3
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final396
dc.pagina.inicio388
dc.publisherINST INVESTIGACIONES AGROPECUARIAS
dc.revistaCHILEAN JOURNAL OF AGRICULTURAL RESEARCH
dc.rightsregistro bibliográfico
dc.subjectGrassland simulation models
dc.subjectmesophytic grasslands
dc.subjectGROWTH
dc.subjectWATER
dc.subjectEVAPOTRANSPIRATION
dc.subjectDYNAMICS
dc.subjectRANGE
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleA SIMULATION MODEL OF MESOPHYTIC PERENNIAL GRASSLANDS
dc.typeartículo
dc.volumen72
sipa.codpersvinculados49021
sipa.codpersvinculados200231
sipa.indexWOS
sipa.indexScielo
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2024-05-30. A SIMULATION MODEL OF MESOPHYTIC PERENNIAL GRASSLANDS.pdf
Size:
3.11 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas