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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
14/04/2023 |
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Data da última atualização: |
06/12/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
RODRIGUES, G. DE P.; FERREIRA, R. R. M.; OLIVEIRA, R. C. DE. |
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Afiliação: |
GABRIEL DE PAULA RODRIGUES, BOLSISTA EMBRAPA TERRITORIAL; ROGERIO RESENDE MARTINS FERREIRA, CNPM; REGINA CÉLIA DE OLIVEIRA, UNIVERSIDADE ESTADUAL DE CAMPINAS. |
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Título: |
Estimativa de perda de solo por características geomorfológicas na bacia hidrográfica do Rio Iquiri/AC. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 20., 2023, Florianópolis. Anais [...]. São José dos Campos: Instituto Nacional de Pesquisas Espaciais, 2023. |
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Páginas: |
p. 257-260. |
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ISBN: |
978-65-89159-04-9 |
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Idioma: |
Português |
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Conteúdo: |
Atualmente, o processo de tomada de decisão se tornou o principal foco dos agricultores rurais junto aos instrumentos computacionais, integrando os dados espaciais e locais com a finalidade de maximizar as produções agrícolas e diminuir a perda de recursos naturais. Para entender o cenário dos manejos e a real necessidade de práticas conservacionistas, tal estudo tem como objetivo identificar áreas com maiores estimativas de perda de solo, atrelado às suas características geomorfológicas por meio da aplicação do software InVEST (módulo SDR) na bacia hidrográfica do rio Iquiri (Ituxi) em Acrelândia ? AC a partir do cenário atual de uso e cobertura da terra. As estimativas seguiram três características geomorfológicas diferentes, a geomorfologia Convexa, a Tabular e a também Tabular com drenagem baixa, com destaque para as classes de Lavouras Perenes e Temporárias que tiveram uma perda de solo no valor de 7,35 Mg e 13,09 Mg por hectare/ano nos respectivos cultivos. |
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Palavras-Chave: |
Geotecnologias; Gestão territorial. |
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Thesagro: |
Conservação do Solo; Geomorfologia; Sensoriamento Remoto. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1153155/1/6121.pdf
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Marc: |
null
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Registro original: |
Embrapa Territorial (CNPM) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
15/09/2008 |
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Data da última atualização: |
15/09/2008 |
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Autoria: |
BAROIS, I.; VELASQUEZ, E.; LAVELLE, P.; NEGRETE-YANKELEVICH, S; GARCÍA, J. A.; SANTOS, M.; ÁLVAREZ-SÁNCHEZ, J.; CASTILLO-CAMPOS, G.; CRAM, S.; FRAGOSO, C; FRANCO-NAVARRO, F.; MARTÍNEZ-ROMERO, E.; MEZA, E.; MORÓN, M. A.; RODRÍGUEZ, P.; ROJAS, P.; SOSA, V.; TREJO, D.; VARELA, L.; BUENO-VILLEGAS, J.; GÓMEZ, J. A.; SORMANI, C. |
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Título: |
Soil quality parameters that determine the below ground biodiversity in Los Tuxtlas Veracruz Mexico. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
In the frame of the project ?Conservation and sustainable management of below ground
biodiversity (GEF/UNEP-CIAT/TSBF)? soil organisms inventories were done in the biosphere
reserve of Los Tuxtlas around Santa Martha volcano. 3 Sites (LM, SF and VC) and 4 land use
(forest (S), fallow (A), pasture (P) and maize (M) were sampled, in 89 points . The sampled
organisms were the biological nitrogen fixators, the mychorrizal fungi, the nematodes, the
macrofauna (earthworms, ants, termites, beetles, millipedes, centipedes?). In each point the
samples for the microorganisms and nematodes came from a composite soil sample made of
12 cores of 5 cm diameter and 20 cm height. The macrofauna was sampled with monoliths
(25x25x30cm), Winkler bags and Pitfall traps. Some chemical parameters (pH, Na, K, Mg. Ca
and P Bray), physical (% H,EC, clay, lime, sand, ad, rd, slope) and organic parameters ( C, N,
NH4, NO3, litter and deshydrogenase and B-glucosidase activity) were measured in each points
from the composed sample.
In order to synthesized the results and to evaluate which parameters of the soil determine the
diversity of organisms the general indicator of soil quality (GISQ) was build after 4 subindicators
that evaluates the physical, chemical, organic matter and the macrofauna data. The construction
of the GISQ was made with PCA of each of the 4 sets of variables and a cluster analysis. Also
identification of species indicators (Ind Val) and coinertia analysis was carried out.
The PCA of the 4 set of variables showed significant separation among sites and among land
uses. LM site had the best soil quality, followed by SF and VC. In the land use system S showed
the best soil quality and M the lowest, although in some group of variables P and A uses presented
a quality near to S.
The highest GISQ (1.00-0.85) were from LM but in different land uses (S, A and P); the lowest
(0.49-0.21) were in VC in maize and pasture and in SF in maize. The cluster analysis did
discriminate 8 groups of the sampling points having a similar GISQ.
The Ind Val analysis extracted some species indicators many from the ants and the nematodes
and few from the earthworms, termites and mycorrhizal fungi.
The co-inertia analysis between soil quality indicators and species richness displayed that
some diplopodes and coleoptera and native earthworms required a high soil quality soil. Other
coleoptera, ants and exotic earthworms required a less rich soil although with a high quality in
organic matter. Finally ,the microorganisms (Rhizobia and mycorrhizal fungi), Nematodes and
Chilopoda, were more represented in poor quality soils MenosIn the frame of the project ?Conservation and sustainable management of below ground
biodiversity (GEF/UNEP-CIAT/TSBF)? soil organisms inventories were done in the biosphere
reserve of Los Tuxtlas around Santa Martha volcano. 3 Sites (LM, SF and VC) and 4 land use
(forest (S), fallow (A), pasture (P) and maize (M) were sampled, in 89 points . The sampled
organisms were the biological nitrogen fixators, the mychorrizal fungi, the nematodes, the
macrofauna (earthworms, ants, termites, beetles, millipedes, centipedes?). In each point the
samples for the microorganisms and nematodes came from a composite soil sample made of
12 cores of 5 cm diameter and 20 cm height. The macrofauna was sampled with monoliths
(25x25x30cm), Winkler bags and Pitfall traps. Some chemical parameters (pH, Na, K, Mg. Ca
and P Bray), physical (% H,EC, clay, lime, sand, ad, rd, slope) and organic parameters ( C, N,
NH4, NO3, litter and deshydrogenase and B-glucosidase activity) were measured in each points
from the composed sample.
In order to synthesized the results and to evaluate which parameters of the soil determine the
diversity of organisms the general indicator of soil quality (GISQ) was build after 4 subindicators
that evaluates the physical, chemical, organic matter and the macrofauna data. The construction
of the GISQ was made with PCA of each of the 4 sets of variables and a cluster analysis. Also
identification of species indicators (Ind Val) and coinertia analysis was carried out.
The PCA o... Mostrar Tudo |
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Embrapa Florestas (CNPF) |
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