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| Registros recuperados: 23 | |
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| VALDIVIESO SALAZAR, C. R.; FELIX, S. G.; CORDEIRO, G. G.. |
| Como parte do programa de controle da salinidade e recuperacao de solos salinos, adotado pelo Departamento Nacional de Obras Contras as Secas- DNOCS, foram instalados 106 ha de drenagem subterranea no Setor I, do Perimetro Irrigado de Vaza-Barris PIVB. No acompanhamento e supervisao da instalacao, foram levantados os custos envolvidos da drenagem e avaliados em testes de campo, o potencial de recuperacao dos solos drenados, as limitacoes e o retorno da atividade na primeira fase de recuperacao com a conducao de uma cultura de sorgo, a partir da qual projetou-se um esquema de avaliacao economica, para um periodo de dez anos. O custo total de recuperacao foi 220,07 OTN/ha, dos quais 184,5 OTN/ha constituiram o custo da drenagem subterranea. Cada lavagem sem... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Recuperação; Vaza-barris; Bahia; Reclamation; Natural resource.; Solo; Recurso natural; Drenagem; Irrigação; Salinidade.; Drainage; Irrigation; Salinity; Soil.. |
| Ano: 1988 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133657 |
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| Wang, Yanhong; Li, Jialin; Wang, Jian; Zhang, Renshun. |
| Reclamation of tidal flat is one of the main ways to get a dynamic balance of the total amount of plowland. With the development of social economy and the increasing demand for plowland, the contradiction between tidal flat reclamation and environment protection becomes more and more outstanding. However，tidal flat reclamation should also follow the dynamic balance of total amount of tidal flat amount. The paper analyzed the history of reclamation and development of Jiangsu mud coast, and calculated the feasible rates of tidal flat reclamation on different stretches respectively, and pointed out that both the economic social benefits of reclamation and the natural erosion-accretion conditions of the coasts should be taken into consideration in deciding the... |
| Tipo: Journal Contribution |
Palavras-chave: Mud flats; Reclamation. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/5853 |
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| Silveira,Karien Rodrigues da; Ribeiro,Mateus Rosas; Oliveira,Luiz Bezerra de; Heck,Richard John; Silveira,Rachel Rodrigues da. |
| Inadequate management of soil and irrigation water contribute to soil degradation, particularly in the alluvial areas of Northeast Brazil, where salinity and sodicity are already common features. This study evaluates the effects of the addition of gypsum in the irrigation water on physical and chemical properties of soils with different levels of salinity and sodicity. Samples were collected at the Custódia irrigation area of Brazil, predominantly covered by alluvial soils. Leaching tests using simulated irrigation water classified as C3S1, and gypsum-saturated irrigation water were carried out in soil columns of 20 and 50 cm depth. Soil leaching with gypsum saturated water (T2) resulted in an increase in the amounts of exchangeable calcium and potassium,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salt affected soils; Irrigation; Reclamation; Management. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000100010 |
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| BAUCH, J.; DUNISCH, O.; GASPAROTTO, L.. |
| In this project the influence of site conditions of degraded land areas on growth and wood formation of eight selected native tree species (Swietenia macrophylla King, Carapa guianensis, Cedrela odorata L., Dipteryx odorata Willd., Hymenaea courbaril L., Ceiba pentandra Gaertn., Virola surinamensis Warb., Tabebuia heptaphylla were investiated. In order to study the influence of the management of degraded areas on growth and wood formation of tree especies, the investigationson the relationship of enviromental input and tree growth were carried out in three different plantation systems (monoculture system, mixed culturesystem, enrichment of a 25-year-old secondary forrest established in 1992/19993 at the Embrapa Amazonia Ocidental, Manaus-AM (Brasil). Due... |
| Tipo: Livro técnico (INFOTECA-E) |
Palavras-chave: Arvore produtora de madeira; Brasil; Reclamation; Woody trees; Sustainability.; Conservação do Solo; Desenvolvimento Sustentável; Cultivo Multiplo; Deterioração do Solo; Essência Florestal; Floresta Tropical Úmida; Manejo; Reflorestamento.; Amazonia; Forest trees; Environmental degradation; Reforestation; Multiple cropping; Tropical rain forests.; Soil management. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/668419 |
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| Komatsu, T. |
| The Seto Inland Sea is the largest enclosed sea in Japan (22,000 km(2) surface area), and is very shallow (average depth of 37 m). Large Zostera marina L. beds throughout the Sea play an important role in its ecosystems and environments. This study reviews the long-term changes in the area of the Zostera beds, as well as some direct and indirect environmental factors which influence their distribution. In 1924, the area of the beds was 4,137 ha in the waters of the Okayama Prefecture, By 1989, 87 % of these beds had been lost. Industrialization and urbanization around the coasts of the Seto Inland Sea began in the 1950s. In the 1960s, the area of the Zostera beds in this Sea amounted to 22,625 ha. Since 1977, 70 % of these beds has been lost. This decline... |
| Tipo: Text |
Palavras-chave: Zostera bed; Long-term change; Pollution; Reclamation; Transparency. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00093/20391/18058.pdf |
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| FELFILI, J. M.; RIBEIRO, J. F.; FAGG, C. W.; MACHADO, J. W. B.. |
| Esse manual para recuperacao de Matas de Galeria da regiao do Brasil Central enfatiza que os plantios devem utilizar especies nativas do local a ser reabilitado, respeitando as condicoes encontradas na microbacia, tais como umidade, fertilidade do solo e luminosidade. As sugestoes propostas procuram reestruturar o ambiente de forma que este retorne o mais rapido e semelhante possivel as condicoes originais, buscando atender a crescente demanda da sociedade e do governo que solicitam subsidios para recuperar matas que foram degradadas por causa das pressoes do desenvolvimento economico. O manual foi elaborado com base na experiencia dos autores, em pesquisas de campo e de laboratorio, alem de sintetizar informacoes disponiveis na literatura. O texto busca... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Recuperação; Riparian vegetation; Reclamation; Código Florestal.; Cerrado; Mata Ciliar.. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/564008 |
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| Registros recuperados: 23 | |
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