Erosão hídrica em Latossolos Vermelhos distróficos

Ayer, Joaquim Ernesto Bernardes; Olivetti, Diogo; Mincato, Ronaldo Luiz; Silva, Marx Leandro Naves

doi:10.1590/1983-40632015v4531197

Cited by 18 publications

(20 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In these cases, soils in general undergo more degradation, with loss of nutrients and of organic matter, due to intensification of eroding processes (Lepsch et al, 2015). In a study about water erosion of Latosols in the hydrographic basin of Córrego Pedra Branca, Ayer et al (2015) made a map of soil loss and found that 34% of the sub-basin area present losses above SLT limits.…”

Section: Resultsmentioning

confidence: 99%

“…When simulating conservationist management techniques for agropastoral activities at the hydrographic sub-basin, Ayer et al (2015) found out that total contribution of erosion in pasture plots and eucalyptus plantations decreases to 8.50% and 0.20%, respectively. This illustrates the potential and advantages of agro ecological conservationist management techniques, as illustrated by Freitas et al (2012).…”

Section: Resultsmentioning

confidence: 99%

“…This situation speeds up soil degradation processes, mainly those related to accelerated water erosion (Lepsch et al, 2015). In studies about soil losses related to water erosion, Ayer et al (2015) evaluated soil loss susceptibility in the hydrographic sub-basin of Córrego Pedra Branca, Alfenas, in the state of Minas Gerais (MG). They detected losses of 23.86 Mg year -1 , with average losses of 8.40 Mg ha -1 year -1 , and found that 34.80% of the sub-basin presented losses above soil loss tolerance limit (SLTL), which varied from 8.94 to 9.99 Mg ha -1 year -1 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Land use capacity and environment services

Servidoni

Ayer

Silva

et al. 2016

Rev. Bras. Geog. Fis.

Self Cite

View full text Add to dashboard Cite

A B S T R A C TThe increasing demand for food resulting from demographic growth has required more productive agropastoral practices. Consequently, new areas were selected for agropastoral production in an arbitrary way, disregarding land use capacity. This ends up in acceleration of degradation processes, mainly those related to water erosion. In this context, the system of land use capacity proposes the classification of maximum use allowed for land of a rural property or of a hydrographic sub-basin, in an attempt to make sustainable plans of use and management of natural resources. Concerning current use of land, the system indicates the sites where there are conflicts in use in relation to their use capacity. Thus, it is possible to propose measures to adapt land use to its use capacity. Therefore, in this study, the classes of land use capacity at the hydrographic sub-basin of Córrego Pedra Branca, in Alfenas, in the state of Minas Gerais, were evaluated. For that purpose, the following soil parameters were evaluated: effective depth, water permeability, texture, declivity, erosion class, base saturation, effective and potential cationic exchange capacity, and aluminum saturation. Soil analyses presented values of base saturation and of low capacity of effective and potential cationic exchange, which illustrate the low natural fertility of these soils, as well as aluminum saturation level harmful to most cultures. Thus, land use would be restricted to low impact, permanent crops, silvicultures, associated agrosilvipastoral system with conservationist management techniques, as, for example, direct seeding, soil correction and fertilization, and reforestation of permanent preservation areas Capacidade de uso das terras e serviços ambientais R E S U M OA crescente demanda por alimentos devido ao crescimento demográfico tem exigido uma agropecuária mais produtiva. Novas áreas são destinadas à produção agropecuária de forma arbitrária, sem respeitar a capacidade de uso das terras. Neste contexto, o sistema de capacidade de uso das terras propõe a classificação do uso máximo permitido para terras de uma propriedade rural ou sub-bacia hidrográfica, buscando elaborar planos de uso e manejo sustentáveis de seus recursos naturais. Em relação ao uso atual das terras, o sistema indica os locais em que existe um conflito de uso em relação a sua capacidade de uso. Assim, é possível propor medidas para adequar o uso das terras com sua capacidade de uso. Nesta pesquisa, foram avaliadas as classes de capacidade de uso das terras da sub-bacia hidrográfica do Córrego Pedra Branca, Alfenas, Minas Gerais. Para tanto, foram avaliados os seguintes parâmetros do solo: profundidade efetiva, permeabilidade à água, textura, declividade, classe de erosão, saturação por bases, capacidade de troca catiônica efetiva e potencial, e saturação por alumínio. Ensaios analíticos do solo apresentaram valores de saturação por bases e de capacidade de troca catiônica efetiva e potencial baixos, que ilustram a baixa fertilidade natural desses solos ...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Land use capacity and environment services

Servidoni

Ayer

Silva

et al. 2016

Rev. Bras. Geog. Fis.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Conservationist management practices are essential in establishing a socioeconomic and environmentally sustainable agriculture. Simple proceedings as, for example, the adoption of a rotating instead of continuous grazing system, and direct seeding could contribute to a significant reduction of erosion rates (Ayer et al, 2015;Olivetti et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Land use capacity and environment services

Servidoni

Ayer

Silva

et al. 2016

Revista Brasileira De Geografia Física

Self Cite

View full text Add to dashboard Cite

The increasing demand for food resulting from demographic growth has required more productive agropastoral practices. Consequently, new areas were selected for agropastoral production in an arbitrary way, disregarding land use capacity. This ends up in acceleration of degradation processes, mainly those related to water erosion. In this context, the system of land use capacity proposes the classification of maximum use allowed for land of a rural property or of a hydrographic sub-basin, in an attempt to make sustainable plans of use and management of natural resources. Concerning current use of land, the system indicates the sites where there are conflicts in use in relation to their use capacity. Thus, it is possible to propose measures to adapt land use to its use capacity. Therefore, in this study, the classes of land use capacity at the hydrographic sub-basin of Córrego Pedra Branca, in Alfenas, in the state of Minas Gerais, were evaluated. For that purpose, the following soil parameters were evaluated: effective depth, water permeability, texture, declivity, erosion class, base saturation, effective and potential cationic exchange capacity, and aluminum saturation. Soil analyses presented values of base saturation and of low capacity of effective and potential cationic exchange, which illustrate the low natural fertility of these soils, as well as aluminum saturation level harmful to most cultures. Thus, land use would be restricted to low impact, permanent crops, silvicultures, associated agrosilvipastoral system with conservationist management techniques, as, for example, direct seeding, soil correction and fertilization, and reforestation of permanent preservation areas

show abstract

“…Apesar da EUPS ser amplamente usada em estudos de quantificação dos processos erosivos (Weill e Sparovek, 2008), ela ainda é pouco utilizada no planejamento territorial. A exceção são os trabalhos sobre limite de tolerância de perda de solo, aplicados em pequenas sub-bacias (Ayer et al, 2015;Olivetti et al, 2015). Porém, de acordo com Ross (1994;, os valores obtidos em estudos que quantificam as perdas de solo para cada característica específica de cada um dos fatores, podem ser utilizados para fundamentar a classificação da vulnerabilidade.…”

unclassified

Environmental vulnerability to water erosion in a hydrographic sub-basin by analytic hierarchy process

Ribeiro¹,

Mincato

Curi

et al. 2016

Revista Brasileira De Geografia Física

Self Cite

View full text Add to dashboard Cite

Artigo submetido em 18/08/2015 e aceite em 29/12/2015. R E S U M OA erosão hídrica é uma das maiores causas de depauperamento dos solos no mundo. No Brasil, a erosão causa a perda de produtividade, o avanço das fronteiras agrícolas, o assoreamento e a contaminação dos corpos d'água e a perda da biodiversidade. Neste cenário, para contribuir com o planejamento ambiental e a gestão territorial, foi avaliada a vulnerabilidade ambiental à erosão hídrica da sub-bacia hidrográfica do rio Mandu, sul de Minas Gerais, pela análise empírica da fragilidade dos ambientes naturais e antropizados. Para tanto, foram considerados os componentes da paisagem: uso do solo, relevo, solo, geologia e clima, em ordem decrescente de importância, pelo Processo Analítico Hierárquico. Foi verificado que os usos do solo estão adequados em 32,72% e inadequados em 67,28% da área. Mais especificamente, 17,68% apresentam forte propensão à erosão hídrica e 0,08% são locais em que os impactos diretos da erosão hídrica são irreversíveis. Portanto, a adoção de técnicas de manejo adequadas para as pastagens, a erradicação dos solos expostos e a redefinição dos locais de produção de café e da agricultura temporária atenuariam os impactos ambientais. Palavras-Chave: Erosão Hídrica; Fragilidade Ambiental; Uso do Solo; Bacia Hidrográfica do Rio Grande. Environmental vulnerability to water erosion in a hydrographic sub-basin by analytic hierarchy process ABSTRACTWater erosion is one of the greatest causes of deterioration of soils worldwide. In Brazil, erosion causes loss of productivity, advance of the agricultural frontier, silting and contamination of water bodies and biodiversity loss. Therefore, to contribute to environmental planning and land management, the environmental vulnerability to water erosion of the Mandu river hydrographic sub-basin, southern Minas Gerais State, was evaluated by empirical analysis of the fragility of natural and anthropogenic environments. Landscape components taken into consideration were: land use, relief, soils, geology and climate, in descending order of priority by the Analytical Hierarchy Process (AHP). It was verified that the land uses are appropriate in 32.72% and inadequate in 67.28% in the area. More specifically, in 17.68% there is strong propensity to water erosion and in 0.08% of the site direct impacts of these processes are irreversible. So, the adoption of appropriate management techniques for pastures, the eradication of exposed soil and the rearrangement of coffee production sites and temporary agriculture would diminish the environmental impacts.

show abstract

Erosão hídrica em Latossolos Vermelhos distróficos

Cited by 18 publications

References 19 publications

Land use capacity and environment services

Land use capacity and environment services

Land use capacity and environment services

Environmental vulnerability to water erosion in a hydrographic sub-basin by analytic hierarchy process

Contact Info

Product

Resources

About