Palestra sit2015(jh)
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Transcript of Palestra sit2015(jh)
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A propriedade rural no contexto de escassez hídrica
João Herbert Moreira Viana Embrapa Milho e Sorgo
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Introdução
•Há crise hídrica?
•Sou afetado?
•Preciso agir?
•Que fazer?
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Introdução
1.De onde viemos?
2.Onde e como estamos?
3.Para onde vamos?
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Introdução (cont.)
4.Quais são nossas
necessidades?
5. Quais são nossas
limitações?
6. Como supri-las?
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Introdução (cont.)
•Ciclos naturais
•Tendências
•Modelos
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Média de precipitação: 1347 mm
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Gerenciamento da propriedade
•Restrição de recursos?
• Gestão!
•Gestão de custos
•Gestão de riscos
•Gestão de oportunidades
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http://commons.wikimedia.org/wiki/File:PikiWiki_Israel_8801_Plants_of_Israel.jpg
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O ciclo hidrológico
•A água não para
•Na natureza: ciclo “fechado”
•Na propriedade: ciclo
“aberto”
•Armazenamento limitado
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Riscos
•Perda de água por
escoamento
•Perda de solo por erosão
•Perda de qualidade de água
por sedimentos e químicos
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Medidas preventivas
•Práticas de conservação de
solos
•Conservação de estradas
•Uso racional da água• Uso humano• Dessedentação de animais• irrigação
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Medidas preventivas
•Ação local• Na propriedade
•Ação regional/nacional• Bacia hidrográfica• Comitês de bacias• Usuários de águas
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Oportunidades
•Prestação de serviços ambientais • Proteção de nascentes• Proteção de margens de rios e
lagoas• Proteção de áreas de recarga
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Conclusões
•Necessidade de diagnóstico local
•Planejamento e gerenciamento
das atividades
•Necessidade de ação coletiva
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Obrigado pela
atenção!