Soil erosion as a function of different agricultural land use in Rio de Janeiro

Nacinovic, Mario Guilherme Garcia; Mahler, Cláudio Fernando; Avelar, André de Souza

doi:10.1016/j.still.2014.07.002

Cited by 27 publications

(16 citation statements)

References 19 publications

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“…For mass flow regulation, for example, 37 out of 60 papers cite negative (or mixed positive and negative) human impacts, mainly from overgrazing or intensive cultivation of arable land, though also from fuelwood collection, skirun construction and road building (e.g. Garcia Nacinovic et al, 2014;Liu et al, 2014;Pohl et al, 2012). However, 20 of these papers show how impacts could be mitigated through restoration and soil-water conservation methods such as re-planting or re-seeding with protective vegetation, constructing low walls or terraces on steep slopes, establishing contour hedges or grass buffer strips between fields, using cover crops to avoid bare soil in winter, and shifting to no-till agriculture (e.g.…”

Section: Human Impactsmentioning

confidence: 99%

How natural capital delivers ecosystem services: A typology derived from a systematic review

et al. 2017

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Section: Human Impactsmentioning

confidence: 99%

How natural capital delivers ecosystem services: A typology derived from a systematic review

et al. 2017

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“…The erosion can intensify the drainage network sedimentation, reducing the eutrophic layer and increasing the suspended sediments associated with pollutants, affecting the water quality (Rickson, 2013;Nacinovic et al, 2014). The factor map was generated from Digital Elevation Model (DEM), that was produced from the topographic map (IGC; 1:10.000; from Piedade county) through the Triangular Irregular Network (TIN) method.…”

Section: Criteria Definitionmentioning

confidence: 99%

Priority Areas for Forest Conservation, Aiming at the Maintenance of Water Resources, Through the Multicriteria Evaluation1

Silva

Mello²,

Vettorazzi³

et al. 2017

Rev. Árvore

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-Replacing the original land cover by other land uses, especially when it is associated with inadequate management practices, can cause changes in runoff and rainwater infiltration. This can result in above normal levels of soil erosion and sediment-carrying to the rivers and streams. The original land cover conservation in the watersheds is, therefore, essential for the maintenance of its water resources. In this context, the main objective of this study was to prioritize areas for forest conservation in two watersheds, aiming at maintaining the water availability, in terms of quantity and quality, for the public supply. The watersheds were selected considering their regional importance and because they are similar in terms of land use / land cover. The study was developed in the Multicriteria Evaluation (MCE) context, which permits the integration of different landscape characteristics (i.e. factors), in order to obtain a solution for the decision-making process. The following criteria were selected by considering the expert's opinions: slope, flow accumulation, aspect, and land use / land cover. Their relative importance (i.e. factor weight) was defined through the Pairwise Comparison Method. The criteria maps units were normalized by a common scale and then aggregated through an MCE method named Weighted Linear Combination (WLC). Pearson correlation was used to evaluate the criteria contribution on the final map. The watershed 1 was classified in approximately 14% of its area as very high priority; 27% as high; 19% as medium; 21% as low; and 18% as very low. The watershed 2 obtained, respectively, 17%; 29%; 17%; 21%; e 17%. We conclude that the WLC method supports the definition of priority areas for forest conservation in the watersheds, in order to have an appropriate design of actions for forest conservation.Keywords: Weighted Linear Combination; Geographic Information System; Decision-support. AVALIAÇÃO MULTICRITERIAL NA PRIORIZAÇÃO DE ÁREAS À CONSERVAÇÃO FLORESTAL VISANDO À MANUTENÇÃO DE RECURSOS HÍDRICOSRESUMO -A substituição da cobertura original do solo por outros usos, em especial quando se tem práticas inadequadas de manejo, pode causar alterações entre o escoamento superficial e infiltração da água das chuvas. O resultado pode ser o processo de erosão do solo e carreamento de sedimentos aos canais de drenagem em níveis acima do normal. A conservação da cobertura original de uma microbacia é, portanto, essencial à manutenção de seus recursos hídricos. Neste contexto, o principal objetivo do trabalho foi a priorização de áreas à conservação florestal de duas microbacias, visando à manutenção da disponibilidade de água, em quantidade e em qualidade ao abastecimento público. As microbacias foram selecionadas por sua importância regional e por possuírem semelhanças quanto ao uso e cobertura do solo. O estudo realizou-se no contexto da Avaliação Multicriterial (AMC), que permite a integração de diferentes características da paisagem (i.e. 2Revista Árvore. 2017;41(1):e410119Silva VAM et al.fator...

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“…Em áreas sob pastagem com alto percentual de cobertura, a rugosidade superficial do solo aumenta (Nacinovic et al, 2014), favorece maior infiltração de água e, consequentemente, menor escoamento supeficial (Amaral et al, 2008).…”

Section: Introductionunclassified

Erosão hídrica em diferentes sistemas de cultivo e níveis de cobertura do solo

Almeida

Carvalho

Panachuki

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar, sob chuva simulada, o efeito da cobertura vegetal sobre a erosão de um Argissolo Vermelho, no Estado de Mato Grosso do Sul, nos seguintes sistemas de cultivo: soja, com preparo convencional; soja, em plantio direto; pastagem estabelecida, sem pisoteio animal; e condição de solo exposto, como padrão de comparação. A cada 20 dias, foram tiradas fotografias digitais para a estimativa da cobertura do solo, e chuvas simuladas de 60 mm h -1 foram aplicadas às parcelas experimentais, com uso do simulador portátil de chuvas. As perdas de solo, quantificadas a cada 2 min, variaram de 3,10 a 11,40 Mg ha , no cultivo de soja sob plantio direto. As perdas de solo diminuíram com o aumento da cobertura vegetal. Na pastagem, a máxima cobertura foi de 98,10%. Os efeitos benéficos do preparo convencional são temporários, o que torna o solo mais suscetível à erosão do que os sistemas conservacionistas.Termos para indexação: Glycine max, Urochloa ruziziensis, perda de solo e água, chuva simulada. Hydraulic erosion in different tillage systems and soil coverAbstract -The objective of this work was to evaluate, under simulated rainfall, the effect of soil cover on the erosion of a Typic Hapludalf erosion, in the state of Mato Grosso do Sul, Brazil, in the following crop systems: soybean, under conventional tillage; soybean, under no-tillage; established pasture, without cattle trampling; and exposed soil, as a comparison standard. Digital photographs were taken every 20 days for soil cover estimate, and 60 mm h -1 simulated rainfall was applied on the experimental plots, using a portable sprinkler infiltrometer. Soil losses, quantified every 2 min, ranged from 3.10 to 11.40 Mg ha -1 , in exposed soil, and from 0.03 to 0.19 Mg ha -1 , in established pasture; water losses ranged from 300 to 555 m 3 ha -1 , in exposed soil, and from 63 to 229 m 3 ha -1 , in soybean cultivation under no-tillage. Soil losses decreased with the increase in vegetation cover. In the pasture, the maximum vegetation cover was 98.10%. Conventional tillage has temporary positive effects, which makes the soil more susceptible to erosion than the conservationist systems.

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Soil erosion as a function of different agricultural land use in Rio de Janeiro

Cited by 27 publications

References 19 publications

How natural capital delivers ecosystem services: A typology derived from a systematic review

How natural capital delivers ecosystem services: A typology derived from a systematic review

Priority Areas for Forest Conservation, Aiming at the Maintenance of Water Resources, Through the Multicriteria Evaluation1

Erosão hídrica em diferentes sistemas de cultivo e níveis de cobertura do solo

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