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Impacto da variabilidade climática na produção de arroz
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ISBN10: 6208359023
ISBN13: 9786208359027
Publisher: Edicoes Nosso Conhecimento
Published: Dec 9 2024
Pages: 68
Weight: 0.25
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786208359027
Publisher: Edicoes Nosso Conhecimento
Published: Dec 9 2024
Pages: 68
Weight: 0.25
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Portuguese
A maior parte dos agricultores apercebeu-se da mudança do clima atual em termos de alteração do padrão de precipitação, da duração, do momento, da intensidade e do inÃcio das monções, bem como da temperatura no verão e no inverno, em termos de calor e frio. Registou-se uma mudança significativa no sistema agrÃcola e nas práticas agrÃcolas habituais. As fontes de água estavam a secar. A chuva da monção estava a diminuir e a exploração agrÃcola tornava-se mais seca de ano para ano. Devido à falta de precipitação atempada e de instalações de irrigação garantidas, a tendência da produtividade estava a diminuir à taxa de 0,027 tonha-1 em Dhading, enquanto em Chitwan estava a aumentar à taxa de 0,039 tonha-1 e os agricultores obtinham menos benefÃcios das actividades agrÃcolas. A análise das tendências revelou uma tendência decrescente da temperatura máxima (-0,0490 CYear-1) e da temperatura média (-0,0230 CYear-1) com um aumento da temperatura mÃnima (0,001oCYear-1) em Chitwan (Rampur), enquanto em Dhading (Dhune Besi) a temperatura máxima estava a aumentar (0,0120 CYear-1) com uma diminuição da temperatura média (-0,0120 CYear-1) e da temperatura mÃnima (-0,0360 CYear-1). Os agricultores estavam a praticar diferentes estratégias de adaptação nas suas explorações agrÃcolas, com base na sua experiência, para fazer face à s alterações climáticas.
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