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Doctoral Thesis
DOI
10.11606/T.3.2003.tde-21102003-163647
Document
Author
Full name
Mirléia Aparecida de Carvalho
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2003
Supervisor
Committee
Porto, Rubem La Laina (President)
Campos, Jose Nilson Bezerra
Chaudhry, Fazal Hussain
Frizzone, Jose Antonio
Mello Júnior, Arisvaldo Vieira
Title in Portuguese
Sistema de suporte a decisão para alocação de água em projetos de irrigação.
Keywords in Portuguese
Modelos de rede de fluxo
Operação de sistemas de irrigação
Planejamento e gestão de recursos hídricos
Sistemas de suporte à decisão
Abstract in Portuguese
No presente trabalho, fez-se a adaptação do reservatório superficial do ModSimLS para trabalhar como reservatório do solo. O modelo denomina-se IrrigaLS. Por comparação com o método do balanço hídrico, verificou-se que o IrrigaLS é apto para determinar demandas de irrigação suplementares e/ou totais. Com a adaptação, o modelo considera a produção agrícola como o resultado da interação dos fatores água-clima-planta-solo. A capacidade de simular sistemas complexos de recursos hídricos foi testada por comparação dos resultados do IrrigaLS com um modelo de simulação similar (ModSimLS). No ModSimLS, as demandas foram calculadas usando método tradicional de balanço hídrico. Verificou-se que o modelo é apto para simular sistemas complexos de recursos hídricos e apresenta algumas vantagens sobre o ModSimLS, quais sejam: determina a necessidade hídrica real da cultura; garante em períodos de seca um suprimento mínimo de água para a planta; garante uma economia de água pela inclusão da precipitação e possibilidade de variação do volume meta; diferencia as culturas com relação a sensibilidade ao déficit hídrico e calcula o balanço hídrico diário do solo.
Title in English
Decision support system for water allocation in irrigation projects.
Keywords in English
Decision support systems
Network flow simulation models
Operation of irrigation systems
Water resourse planning and manegement
Abstract in English
In this work, an adaptation in the ModSimLS surface reservoir has been made in order to make it work as a soil reservoir. The model is called IrrigaLS. When compared to the water balance method, it was ascertained that IrrigaLS is suitable for determining supplementary and/or total irrigation demands. The model adaptation considers agricultural production as a result from water-weather-plant-soil factors interaction. The model capability to simulate complex water resources systems has been tested by comparing the results of IrrigaLS with a similar simulation model (ModSimLS) where the irrigation demands were computed using traditional water balance methods. It was ascertained that the model is suitable for simulating complex water resources systems and it has some advantages over ModSimLS, that are: it determines the real water needs of the culture; it guarantees a minimum water supply to the crop during dry periods, it guarantees water saving by the inclusion of rainfall and by the possibility to choose the soil moisture target; it distinguishes the crops in relation to the water deficit sensibility and it calculates the soil daily water balance.
 
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IrrigaLS.pdf (2.89 Mbytes)
Publishing Date
2003-10-30
 
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