O QUE  É EROSÃO E O QUE ELA CAUSA?
Autor: prof Oscar Ramos | Publicado: 2012-12-18T04:15:00-08:00

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A erosão em ravinas ou sulcos origina-se da ação concentrada do
fluxo d’água que acaba formando um escoamento canalizado devido ao aumento da
velocidade e turbulência na encosta. 




Este fato pode ser decorrente do aumento da intensidade da
chuva, do aumento da declividade da encosta e da diminuição da capacidade de
armazenamento de água pelo solo. 




Esta forma erosiva é facilmente percebida, pois após o evento
chuvoso, pode-se observar a presença de sulcos de profundidades variadas no
solo.

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A influência do homem no ambiente através de práticas agrícolas,
acelera muito as ações erosivas, levando a grandes prejuízos financeiros,
sociais e ambientais. 




Alguns dos efeitos causados pela erosão: 




Aumento do preço dos produtos agrícolas




Diminuição da capacidade produtiva do solo




Aumento do êxodo rural




Assoreamento dos cursos d’água que resultam em transbordamento e
inundações queda de barreiras em estradas




Encarecimento do tratamento da água




Prejuízo financeiro, pois os adubos e corretivos aplicados no
solo, são carreados junto com o solo erodido, não sendo utilizados pelas plantas.

&nbsp;

VINÍCIUS