Valoração econômica do efeito da erosão em sistemas de manejo do solo empregando o método custo de reposição

Pugliesi, Adriane Cristine Vasconcelos; Marinho, Mara de Andrade; Marques, João Fernando; Lucarelli, José Ricardo Freitas

doi:10.1590/s0006-87052011000100017

Cited by 13 publications

(17 citation statements)

References 10 publications

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“…In Brazil, examples of this finding are reported in Bertol et al (2007) and Pugliesi et al (2011), who verified a reduction of losses generated by erosion in management systems with greater soil cover. In the first case (Bertol et al, 2007), the authors estimated the costs of soil erosion associated with nutrient losses, converted into triple superphosphate, potassium chloride and dolomitic limestone, in three management systems (PC, PM and PD) on a Cambisol.…”

Section: Discussionmentioning

confidence: 80%

“…These practices enable reductions of 50% to 100% in soil losses compared to conventional tillage -PC (Bertol et al, 1997;Bertol et al, 2007;Morais & Cogo, 2001). Among the most investigated conservation tillage practices, soil losses in no-tillage (PD), in general, is lower than in PC and in minimum tillage systems -PM - (Eltz et al, 1984a, b;Bertol et al, 2007;Pugliesi et al, 2011), given the higher percentage of soil cover and slighter disturbance of the soil. Systems with soil cover indices over 30% during cultivation and fallow periods are considered conservation systems (Lopes et al, 1987;Machado & Silva, 2001;Soane et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…In Brazil, the association of physical losses caused by erosion with their economic aspects is not new (Telles et al, 2013b), but this approach was considered in a few studies (Marques et al, 1961;Sorrenson & Montoya, 1989;Martin et al, 1991;Marques, 1998;Rodrigues, 2005;Bertol et al, 2007;Sarcinelli et al, 2009;Dantas & Monteiro, 2010;Pugliesi et al, 2011;Andrade et al, 2011). Although these have addressed only the losses of nutrients in the production unit (on-site), representing a small portion of the total costs of soil erosion (Crosson, 1995), this information is important for farmers, researchers and policy makers to form their opinions on the conservation management practices.…”

Section: Introductionmentioning

confidence: 99%

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Perdas e custos associados à erosão hídrica em função de taxas de cobertura do solo

et al. 2015

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The aim of this study was to estimate water erosion costs associated with nutrient losses in four different rates of artificial cover. The experiment was carried out from 1987 to 1996 in runoff plots to measure soil losses in Campinas, State of Sao Paulo, in an Ferralsol under natural rainfall. The experimental design was completely randomized, with four treatments (0%, 24%, 40% and 90% artificial cover) and three replications. To estimate costs, P, K + , Ca 2+ and Mg 2+ concentrations in runoff water and soil removed by erosion were summed up, converted into triple superphosphate, potassium chloride and dolomitic limestone and multiplied by their respective market prices. The results indicate that, under the experimental conditions, the greater the percentage of soil cover, the lower the losses of water, soil, organic matter and nutrients. The soil with 90% cover presented reduction of 51.97% in average water losses, 54.44 in soil losses and 54.91% in organic matter losses than the treatment with 0% cover. In bare soil, losses were estimated at 16% P 2 O 5 and 8% KCl in terms of the amount of fertilizers recommended. Costs varied from US$ 107.76 ha -1 year -1 in bare soil (0% cover) to US$ 18.15 ha -1 year -1 in soil with 90% cover. With these values, losses were estimated at 616.5 million tons of soil per year for Brazil, as a result of soil erosion in annual crops, and cost of this process is around US$ 1.3 billion per year.

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Section: Discussionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Perdas e custos associados à erosão hídrica em função de taxas de cobertura do solo

et al. 2015

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“…Quando acelerada, principalmente pelo desmatamento, a erosão causa impactos ambientais, econômicos e sociais (Bertol et al, 2007;Pugliesi et al, 2011). O desmatamento também contribui para o aumento do escoamento superficial e da produção de sedimentos, com perda de nutrientes e redução da capacidade produtiva dos solos (Araújo & Knight, 2005), além de acarretar o assoreamento de reservatórios e rios (Bertoni & Lombardi Neto, 2005).…”

Section: Introductionunclassified

Análise de sensibilidade dos parâmetros do modelo SWAT e simulação dos processos hidrossedimentológicos em uma bacia no agreste nordestino

Aragão

Cruz

Amorim

et al. 2013

Rev. Bras. Ciênc. Solo

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RESUMOO processo erosivo constitui-se na principal causa de degradação dos solos e é acelerado por intervenções humanas nas bacias hidrográficas, resultando em prejuízos ao setor agrícola e ao meio ambiente. Para a previsão dos impactos de ações antrópicas ou de mudanças climáticas sobre os processos hidrossedimentológicos, os modelos distribuídos e de base física têm sido bastante eficazes. Neste estudo, aplicou-se o modelo SWAT à sub-bacia do Rio Japaratuba Mirim, em Sergipe, nas seções de medição das estações Fazenda Pão de Açúcar (PA) e Fazenda Cajueiro (CJ), com áreas de contribuição respectivamente de 137,3 e 277,8 km 2 , visando à parametrização das duas bacias aninhadas por meio dos processos de calibração e de validação. Foram realizadas simulações do escoamento na bacia menor (PA), a partir dos parâmetros calibrados na bacia maior (CJ), e, reciprocamente, do escoamento na bacia maior (CJ). Em seguida, foram também realizadas simulações do escoamento e da produção de sedimentos para o período de dados de vazão disponíveis (1985 a 2000), para a seção CJ. Os resultados evidenciaram que o modelo calibrado simulou bem o escoamento superficial e conseguiu prever, de forma coerente, a produção de sedimentos com base nos 12 parâmetros mais sensíveis do modelo. A transposição dos parâmetros da bacia maior para a menor e, vice-versa,

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“…For example, Bakker et al (2004) stated that a loss of 0.10 m of the soil surface in agricultural ecosystems would cause a mean loss in crop productivity of 4 %. In Brazil, for several reasons, but mainly due to the complexity of tropical agricultural systems (Sparovek et al, 1993;Pugliesi et al, 2011), little evidence was found for this relationship. For an Argissolo at an experimental site in the region of Santa Maria/RS, Albuquerque et al (1996) found a direct relationship between the horizon thickness and maize grain yield, i.e., a decrease of 43 kg ha -1 for each 0.01 m of lost surface layer.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of the Accelerated Soil Erosion in São Paulo State (Brazil) by the Soil Lifetime Index Methodology

Medeiros

Giarolla

Sampaio

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:The soil is a key component of the Earth System, and is currently under high pressure, due to the increasing global demands for food, energy and fiber. Moreover, the management of agricultural systems is often inadequate and ignores the agricultural suitability of lands, and particularly the vulnerability of soils. This paper demonstrates the application of the concept of the Soil Lifetime Index (SLtI) for the entire state of São Paulo, at a spatial resolution of 30 m. The SLtI methodology represents a tolerance criterion and a diagnostic tool to assess the level of soil degradation by water erosion, based on estimated soil loss rates and on an average soil renewal rate. Two approaches were applied to determine: i) the remaining time (years) until the solum (horizons A + B) is removed by water erosion to a critical depth of 1.0 m (original approach); ii) the remaining time (years) until the top 0.25 m of the nutrient-rich soil surface is removed by water erosion (new approach). Several areas in the state have reached a very critical soil depletion level, due to the predominance of consolidated agricultural activities, mainly of sugarcane and livestock production (as in the mesoregions of Ribeirão Preto, Bauru, Assis, Itapetininga and Araraquara). Only 35 % of the study area is in conserved state; 65 % of the study area is in the state of resource degradation, requiring intervention to diminish soil loss rates -and of this total, SLtI is zero in 1 and 0.25 % of the study area, respectively, for the original (critical depth of 1 m) and the new approach (0.25 m). It was estimated that at the current soil loss rates, within 100 years, 20,000 km 2 of the total area of the state of São Paulo (248,209 km 2 ) will have reached the critical depth of 1.0 m, and the top 0.25 m of the soil surface from an area of approximately 76,000 km 2 will have been completely removed if the current pace of resource exploitation is maintained.

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Valoração econômica do efeito da erosão em sistemas de manejo do solo empregando o método custo de reposição

Cited by 13 publications

References 10 publications

Perdas e custos associados à erosão hídrica em função de taxas de cobertura do solo

Perdas e custos associados à erosão hídrica em função de taxas de cobertura do solo

Análise de sensibilidade dos parâmetros do modelo SWAT e simulação dos processos hidrossedimentológicos em uma bacia no agreste nordestino

Diagnosis of the Accelerated Soil Erosion in São Paulo State (Brazil) by the Soil Lifetime Index Methodology

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