Desertification Process
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Seed distribution by punch seeder in family farming
RESUMO A agricultura familiar busca utilizar práticas agrícolas menos agressivas, entretanto existem poucas máquinas adequadas à realidade deste segmento, isso tem levado ao uso de práticas tecnicamente incorretas, que vem contribuindo para o empobrecimento, compactação e desertificação dos solos agrícolas. Diante disso, as semeadoras puncionadoras
Rev. Ciênc. Agron.. Publicado em: 04/07/2019
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2. Análise de desempenho de um fogão solar com parabola fabricada em material compósito
It is presented a solar cooker made with a parabolic reflector composed by a composite material. For this purpose, it was utilized a cast concrete with a parabolic profile obtained by means of modeling. It will be demonstrated the manufacturing process and settings, as well as tests results, in order to determine the contact temperature and cooking time of s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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3. Analysis Process Degradation / Desertification in Basin Creek Warlock Based on DFC, Municipality of Jaguaribe - Cearà / AnÃlise do processo de degradaÃÃo/desertificaÃÃo na bacia do Riacho Feiticeiro, com base no DFC, municÃpio de Jaguaribe - CearÃ
This research discusses the problem of degradation / desertification in the in the Feiticeiro stream basin. With an area of 236 KmÂ, is located northwest from the city of Jaguaribe, Ceara, inserted in the Jaguaribe river basin, which has a total area of 75.669 km Â. This study was developed based in the methodology of physical conservationist diagnosis, wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
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4. Cariri paraibano : do silêncio do lugar à desertificação
No presente estudo, tomando por base o processo histórico de ocupação e povoamento do Cariri, a análise qualitativa da vegetação, através de bio-indicadores (diversidade, densidade e estratos) e o uso de técnicas de sensoriamento remoto e geoprocessamento, foi efetuado o mapeamento da desertificação na região. Entre os resultados encontrados, foi
Publicado em: 2009
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5. Zoneamento ambiental como instrumento de gestÃo para avaliaÃÃo da vulnerabilidade ao processo de desertificaÃÃo: anÃlise do MunicÃpio de Salgueiro â PE
Este trabalho tem por objetivo analisar o zoneamento ambiental, instrumento de gestÃo previsto na PolÃtica Nacional de Meio Ambiente (PNMA), como fonte de subsÃdios para avaliar a vulnerabilidade ao processo de desertificaÃÃo no semi-Ãrido nordestino, Ãrea de atuaÃÃo da AgÃncia de Desenvolvimento do Nordeste (ADENE), antiga SUDENE, instituiÃÃo na
Publicado em: 2007
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6. A propensÃo à desertificaÃÃo no Estado do CearÃ: anÃlise dos aspectos agropecuÃrios, econÃmicos, sociais e naturais / The propensity to the desertification in the State of the CearÃ: analysis of aspects agricultural, economic, social and natural the aspects
The study on desertification became more acceptable when researches passed to interrelate this phenomenon inside the four spheres that embrace it: environmental, economic, social and political. This environmental crisis is consequence, mostly, of the human activities through the abusive use and disordered of the half natural already fragile and predisposed t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2006
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7. Participação pública em programas ambientais :um estudo em área suscetível à desertificação no Estado do Rio Grande do Norte / Public participation in environmetal programs: a study in a susceptible of desertification area in the state of Rio Grande do Norte
The natural resources degradation and its consequences to the society life have provided several discussions about the evaluation methods and environmental management, and the available means to minimize the effects of mans actions over the environment. Amongst these actions is the encouragement to the community participation in the process of carrying out t
Publicado em: 2006
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8. O polo Gesseiro do Araripe : unidades geo-ambientais e impactos da mineração
This thesis analyses the environmental problems generated by gypsum mining, characterizing its way of exploitation and its implication to the natural environment. Besides a diagnosis of the situation of the affected area, this work offers some suggestions for a rational administration of the natural resources in question. A geo-environmental map was made, in
Publicado em: 2004
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9. Management of Indigenous Plant-Microbe Symbioses Aids Restoration of Desertified Ecosystems
Disturbance of natural plant communities is the first visible indication of a desertification process, but damage to physical, chemical, and biological soil properties is known to occur simultaneously. Such soil degradation limits reestablishment of the natural plant cover. In particular, desertification causes disturbance of plant-microbe symbioses which ar
American Society for Microbiology.
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10. Desert dust suppressing precipitation: A possible desertification feedback loop
The effect of desert dust on cloud properties and precipitation has so far been studied solely by using theoretical models, which predict that rainfall would be enhanced. Here we present observations showing the contrary; the effect of dust on cloud properties is to inhibit precipitation. Using satellite and aircraft observations we show that clouds for
The National Academy of Sciences.