Geografia do Nordeste, sobre a Desertificação (1).pptx

Slide sobre desertificação

1. André Guerra Marcos Paulo Miguel Cabral Sindgley Martins Lucas Manoel Desertificação

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3. Definição e causas da desertificação A desertificação é um processo de degradação do solo que ocorre em locais áridos, semiáridos e secos, o que resulta na redução da produtividade biológica e econômica da terra. A diminuição da cobertura vegetal, a redução da biodiversidade, a erosão do solo e a diminuição da capacidade de retenção de água caracterizam esse fenômeno.

4. Os principais fatores que contribuem para a desertificação Atividades Humanas: Ações humanas, como desmatamento, agricultura não sustentável, pastoreio excessivo, irrigação mal planejada e práticas inadequadas de manejo do solo, podem acelerar o processo de desertificação. Alterações Climáticas: Como aumento da temperatura, diminuição das chuvas e alterações nos padrões de precipitação, podem contribuir para a desertificação, tornando as áreas secas ainda mais suscetíveis à degradação do solo. Desmatamento: O desmatamento remove a cobertura vegetal que protege o solo da erosão causada pelo vento e pela água, aumentando a vulnerabilidade à desertificação.

5. Má Gestão da Água: A irrigação inadequada pode levar à salinização do solo, tornando-o infértil e suscetível à desertificação. O uso excessivo de água de aquíferos subterrâneos pode esgotar esses recursos, deixando o solo seco e propenso à degradação. Expansão Urbana: O crescimento das áreas urbanas: pode resultar na destruição de habitats naturais, fragmentação de ecossistemas e aumento da impermeabilização do solo, contribuindo para a desertificação nas áreas circundantes. Sobrepastoreio : O pastoreio excessivo por animais pode levar à compactação do solo, diminuindo a sua capacidade de retenção de água e nutrientes, e contribuindo para a erosão e a desertificação.

6. Impactos da desertificação De modo geral a desertificação pode trazer diversas consequências para a população e os ambientes semiáridos. São impactos que podem ser de cunho natural, social ou econômico. Impactos naturais: redução de recursos hídricos; aumento da poluição hídrica; arenização das áreas afetadas; destruição da fauna e flora. Impactos social e econômico : migração descontrolada para áreas urbanas; degradação familiar ; crescimento da pobreza; perda de potencial agrícola.

7. Impactos no Estado da Paraiba A Paraíba é o estado brasileiro que possui maior percentual de áreas com nível de degradação de terras muito grave, afetando o dia-a-dia de uma grande parte da população [...] (OLIVEIRA, et al., 2008 apud CANDIDO, 2002 ) A análise de dados coletados no Estado da Paraíba indica uma alta deterioração das condições de vida, e denuncia as dificuldades das famílias em se manter, o que implica um sério comprometimento das condições de sustentabilidade das terras (OLIVEIRA et al., 2008 apud CANDIDO et al., 2002 ). Nesse cenário, a população não vê alternativa a não ser a exploração dos recursos naturais para continuarem a viver em meio a tantas necessidades. Após exaustão das terras, seja por esgotamento do solo em decorrência do uso intensivo, instalação de processos erosivos resultante da devastação da cobertura vegetal e ou salinização, e sem medidas de contenção da degradação das terras, surge a desertificação no seu estágio mais severo [...] (OLIVEIRA et al., 2008)

8. Convivência com o semiárido C onviver no semiárido é construir politicas públicas para sepultar a velha estratégia de combate a seca. Marca fundamental da convivência é a pluralidade: Nela não cabe a monocultura, a concentração de terras e a concentração de água.

9. P ráticas de convivência com o semiárido - Realizar uma reforma agrária ampla e adequada a realidade do semiárido - Adotar plantios que sejam resistentes e vivam com pouca água (a palma, o mandacaru, o umbu e cajá) - Criar animais que sejam adequados a esse clima (bodes, carneiros, galinha caipira.) - Desenvolver e utilizar tecnologias que possibilitem ao povo a capitação de água das chuvas.

10. Cisterna de alvenaria Cisterna calçadão Cisterna enxurrada

11. NÃO HÁ CONVIVÊNCIA SEM GENTE, SEM MÚSICA, SEM CULTURA, SEM APROFUNDAMENTO DO MODO DE VIVER.

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13. A picture always reinforces the concept Images reveal large amounts of data, so remember: use an image instead of a long text. Your audience will appreciate it

14. 4,498,300,000 Big numbers catch your audience’s attention

15. 9h 55m 23s Jupiter's rotation period 333,000 The Sun’s mass compared to Earth’s 386,000 km Distance between Earth and the Moon

16. Neptune Mercury Venus Venus has extremely high temperatures Neptune is the farthest planet from the Sun It’s the smallest planet in the Solar System Saturn is a gas giant with several rings Saturn Jupiter is the biggest planet of them all Jupiter How many deserts are there?

17. 25% Mercury is the closest planet to the Sun and the smallest one in the Solar System 75% Despite being red, Mars is actually a cold place. It’s full of iron oxide dust 50% Venus has a beautiful name, but also extremely high temperatures Percentages

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21. Our study centers Venus is the second planet from the Sun Venus Mercury is the closest planet to the Sun Mercury Despite being red, Mars is a very cold place Mars

22. Location of deserts Venus is the second planet from the Sun Venus Mercury is the closest planet to the Sun Mercury Despite being red, Mars is a very cold place Mars Jupiter is the biggest planet of them all Jupiter

23. News & facts Mars Venus Jupiter Mercury 20% 30% 90% 50% Mars is a very cold place. It’s full of iron oxide dust, which gives the planet its reddish cast Mars 60% 25% Follow the link in the graph to modify its data and then paste the new one here. For more information, click here

24. Our team You can speak a bit about this person here Peter Hill You can speak a bit about this person here Kaliyah Harris

25. Timeline Venus is the second planet from the Sun Venus Earth is the third planet from the Sun Earth Despite being red, Mars is a very cold place Mars Jupiter is the biggest planet of them all Jupiter 01 02 03 04

26. Infographic Mercury is the closest planet to the Sun Mercury Despite being red, Mars is a cold place Mars Venus is the second planet from the Sun Venus Jupiter is the biggest planet of them all Jupiter

27. Classification of arid lands Earth Venus is the second planet from the Sun Venus Despite being red, Mars is a very cold place Mars Neptune is the farthest planet from the Sun Neptune Saturn is a gas giant and has several rings Saturn

28. Weather behavior District Normal Increase in temperatures by 2020 2050 2080 2100 Venus Venus is the second planet from the Sun 5.1-6.8 4.5-5.6 3.8-6.2 6.9-7.5 Mercury Mercury is the closest planet to the Sun 5.3-8.9 5.2-5.1 5.4-7.3 4.1-6.5 Jupiter Despite being red, Mars is a very cold place 4.7-6.2 4.1-8.2 4.8-10.9 4.4-8.7 Neptune Neptune is the farthest planet from the Sun 4.1-7.3 3.5-4.2 5.1-8.2 7.1-8.9

29. Bibliography Mars is a very cold place It’s full of iron oxide dust It was named after a Roman god Mars Venus has a beautiful name It’s the second planet from the Sun It has extremely high temperatures Venus

30. The desert biome Jupiter is the biggest planet of them all Venus is the second planet from the Sun Venus Neptune is the farthest planet from the Sun Mercury is the closest planet to the Sun

31. A graph about deserts Venus is the second planet from the Sun 2020 Mercury is the closest planet to the Sun 2021 Despite being red, Mars is a very cold place 2022 30% 60% 10% Follow the link in the graph to modify its data and then paste the new one here. For more info, click here

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34. Alternative resources Desert landscape video conferencing Vectors

35. Resources Vectors Copy-space woman reading book Portrait of african american man Medium shot kid and man reading sign Medium shot happy kid in american desert Photos Icon Pack: Climate Change | Filled Icon pack Flat design of responsive website design Landscape desert background Hand drawn wild animals illustration 1 Hand drawn wildlife background Desert landscape at day time with sun

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