Influence of soil properties in different management systems: Estimating soybean water changes in the agro-IBIS model

Autor: Virnei Silva Moreira, Marcelo Bortoluzzi Diaz, Luiz Antonio Candido, Luis Gustavo Gonçalves de Gonçalves, Gervásio Annes Degrazia, Débora Regina Roberti, Raphael Pousa, Geovane Webler
Jazyk: angličtina
Rok vydání: 2018
Předmět:
010504 meteorology & atmospheric sciences
Future Climate Scenarios
Cultivation
Integrated Biosphere Simulators
Model Evaluation/performance
Climate Models
Soil science
Hydraulic Characteristic
01 natural sciences
Tillage
Soil management
Water balance
Soil Property
Pedotransfer function
Biosphere
In-situ Observations
Evapotranspiration
Cropping Practice
Soil Management
Computer Simulation
Water Budget
0105 earth and related environmental sciences
Hydrology
Topsoil
Conventional tillage
Physical Soil Properties
Glycine Max
Brasil
04 agricultural and veterinary sciences
Physiological Maturity
Numerical Model
Agronomy
Land Surface Modeling
Dynamics
Future Prospect
Soil water
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
General Earth and Planetary Sciences
Environmental science
Soils
Soybean
Estimation
Integrated Approach
Zdroj: Repositório Institucional do INPA
Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
Popis: The water balance in agricultural cropping systems is dependent on the physical and hydraulic characteristics of the soil and the type of farming, both of which are sensitive to the soil management. Most models that describe the interaction between the surface and the atmosphere do not efficiently represent the physical differences across different soil management areas. In this study, the authors analyzed the dynamics of the water exchange in the agricultural version of the Integrated Biosphere Simulator (IBIS) model (Agro-IBIS) in the presence of different physical soil properties because of the different long-term soil management systems. The experimental soil properties were obtained from two management systems, no tillage (NT) and conventional tillage (CT) in a long-term experiment in southern Brazil in the soybean growing season of 2009/10. To simulate NT management, this study modified the top soil layer in the model to represent the residual layer. Moreover, a mathematical adjustment to the computation of leaf area index (LAI) is suggested to obtain a better representation of the grain fill to the physiological maturity period. The water exchange dynamics simulated using Agro-IBIS were compared against experimental data collected from both tillage systems. The results show that the model well represented the water dynamics in the soil and the evapotranspiration (ET) in both management systems, in particular during the wet periods. Better results were found for the conventional tillage management system for the water balance. However, with the incorporation of a residual layer and soil properties in NT, the model improved the estimation of evapotranspiration by 6%. The ability of the Agro-IBIS model to estimate ET indicates its potential application in future climate scenarios.
Databáze: OpenAIRE
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