Environmental performance of agroforestry systems in the Cerrado biome, Brazil

Martinelli, Gabrielli do Carmo; Schlindwein, Madalena Maria; Padovan, Milton Parron; Vogel, Everton; Ruviaro, Clândio Favarini

doi:10.1016/j.worlddev.2019.06.003

Cited by 25 publications

(10 citation statements)

References 92 publications

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“…Conversely, the terms afforestation (i.e. converting grasslands and savannas into planted forests), agroforestry and woody encroachment (Martin et al., 2021; Martinelli et al., 2019; Shindler et al, 2011), even when they pose a threat to the ecological integrity of naturally open biomes (Veldman et al., 2015). Better mapping open biomes .…”

Section: Discussionmentioning

confidence: 99%

“…Agroforestry and afforestation in open biomes are being implemented widely in sub‐Saharan countries (Djenontin et al., 2021), India (Coleman et al, 2021), China (Cao et al., 2011) and Brazil (Martinelli et al., 2019), despite repeated warnings and robust evidence of the harmful consequences of such tree planting to ecosystem services, biodiversity conservation and human livelihoods (reviewed by Fleischman et al., 2020). Tree plantations may result in a reduction in net carbon sequestration or an increase in net emissions relative to previous land‐cover types, such as grassland or peatland, and may divert attention from efforts to reduce emissions from deforestation and degradation (Sutherland et al., 2021).…”

Section: Discussionmentioning

confidence: 99%

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Biome Awareness Disparity is BAD for tropical ecosystem conservation and restoration

Silveira

Ordóñez‐Parra

Moura

et al. 2021

Journal of Applied Ecology

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We introduce the concept of Biome Awareness Disparity (BAD)—defined as a failure to appreciate the significance of all biomes in conservation and restoration policy—and quantify disparities in (a) attention and interest, (b) action and (c) knowledge among biomes in tropical restoration science, practice and policy. By analysing 50,000 tweets from all Partner Institutions of the UN Decade of Ecosystem Restoration, and 45,000 tweets from the main science and environmental news media world‐wide, we found strong disparities in attention and interest relative to biome extent and diversity. Tweets largely focused on forests, whereas open biomes (such as grasslands, savannas and shrublands) received less attention in relation to their area. In contrast to these differences in attention, there were equivalent likes and retweets between forest versus open biomes, suggesting the disparities may not reflect the views of the general public. Through a literature review, we found that restoration experiments are disproportionately concentrated in rainforests, dry forests and mangroves. More than half of the studies conducted in open biomes reported tree planting as the main restoration action, suggesting inappropriate application of forest‐oriented techniques. Policy implications. We urge scientists, policymakers and land managers to recognise the value of open biomes for protecting biodiversity, securing ecosystem services, mitigating climate change and enhancing human livelihoods. Fixing Biome Awareness Disparity will increase the likelihood of the United Nations Decade on Ecosystem Restoration successfully delivering its promises.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Biome Awareness Disparity is BAD for tropical ecosystem conservation and restoration

Silveira

Ordóñez‐Parra

Moura

et al. 2021

Journal of Applied Ecology

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“…Devido aos seus benefícios ambientais e socioeconômicos, os sistemas agroflorestais biodiversos revestem-se de grande importância para a agricultura familiar e à sociedade em geral (Camargo et al, 2019;Martinelli et al, 2019). Contudo, apesar dos avanços nos estudos com esses agroecossistemas, poucos avaliam a viabilidade financeira de diferentes arranjos de espécies vegetais (Arco-Verde & Amaro 2014Camargo, 2019;Martinelli et al, 2019). Essas análises possibilitam aprimoramentos no planejamento e gerenciamento da unidade rural, evitando gastos desnecessários e aumentando a rentabilidade dos agricultores (Arco-Verde & Amaro, 2015).…”

Section: Introductionunclassified

Viabilidade financeira de sistemas agroflorestais biodiversos no Centro Oeste Brasileiro

Garcia

Paulus

Fernandes

et al. 2021

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Os sistemas agroflorestais biodiversos (SAF’s) combinam espécies arbóreas frutíferas ou lenhosas, com culturas agrícolas e/ou criação de animais, em uma mesma área. Para o agricultor que o detém, esses sistemas trazem melhoria da qualidade de vida econômica, social e ambiental, pois proporcionam formas sustentáveis de produção de alimentos, segurança alimentar, além da preservação ambiental. O estudo apresenta a análise de viabilidade financeira de dois modelos de sistemas agroflorestais implantados no município de Dourados, MS. A pesquisa objetivou fornecer subsídios aos agricultores familiares para a implementação de SAF’s. As culturas de interesse econômico selecionadas para composição dos SAF’s implantados foram: SAF1- café, abacaxi, milho, feijão; SAF2 – palmito de pupunha, banana, abacaxi, milho, feijão, além de nove espécies arbóreas para ambos os SAF’s: acerola, graviola, goiaba, pitanga, aroeira, guaritá, ipê, canafístula e peito de pombo, cada SAF’s contou com um hectare. Para planejamento e elaboração dos sistemas, foi utilizada a planilha AmazonSAF, onde foram inseridos dados de receitas e despesas, que refletem a realidade da agricultura familiar, verificando a rentabilidade ao longo de 20 anos. Ambos os SAF’s apresentaram condições de viabilidade financeira, pois o Valor Presente Líquido do SAF 1 foi de R$ 11.018,24 e do SAF 2 foi de R$ 40.377,04. Este último se apresentou ligeiramente como o mais rentável, já que sua relação Benefício/Custo foi de 1,2 e o payback 9 anos, diferente do SAF 1, cuja RB/C foi de 1,1 e payback de 10 anos. A viabilidade financeira, tanto do SAF 1, com café como cultura principal, quanto do SAF 2, com palmito de pupunha e banana, foi confirmada, de forma a garantir ao produtor rural que, se bem planejados e acompanhados, estes sistemas demonstraram boas condições para produção de alimentos e geração de renda. Além disso, se tornam soluções possíveis para uma agricultura sustentável, valorizando e utilizando sabiamente os recursos naturais.

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“…Agroforestry systems (AFS) have been an alternative for ecological restoration (Martinelli et al, 2019). These AFS gained prominence in Brazil with the publication of the National Plan for the Recovery of Native Vegetation, Decree no.…”

Section: Introductionmentioning

confidence: 99%

“…8.972 (Brasil, 2017), which imposes the recomposition of 12 million hectares in 20 years, being part of those with AFS established in legally protected areas, that allowed its adoption in small properties. AFS are considered integrated production systems that can provide environmental services, food, and nutritional security and have been used to restore the production capacity of degraded areas (Martinelli et al, 2019). Some recent advances in this field of knowledge have highlighted the use of stable isotopes as interesting restoration indicators for soil protection and nutrient cycling.…”

Section: Introductionmentioning

confidence: 99%

Carbon and nitrogen dynamics in a successional agroforestry system in the Neotropics

Pinheiro-Alves

Carvalho

Timoteo

et al. 2021

J. Biotechnol. Biodivers.

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The present study aimed to assess the effect of fourteen years of implementation of a successional and biodiverse agroforestry system (AFS) in a degraded agricultural field located in the Cerrado region of Central Brazil on the carbon and nitrogen dynamics. To track short term soil N dynamics we sampled instantaneous soil N rates in four seasonal periods (wet-dry, dry, dry-wet, wet) and to track long term C and N dynamics we measured C and N stable isotopes in the plant-litter-soil system. As additional data we determined the aboveground biomass; resorption rates of foliar and, soil C and N stocks. The measured aboveground biomass was 19.2 Mg C ha-1. The mean resorption rate of foliar N was 49.3%. C:N ratio was 20.4 ± 1.4 and 14.2 ± 0.32 in the litter layer and the topsoil, respectively. Soil N-NH4+ was predominant over N-NO3-. After 40 days, the cumulative N-N2O emission was 0.33 kg ha-1. The mean C and N stocks were 3.8 Mg N ha-1 and 43.6 Mg C ha-1, respectively. The averaged soil δ15N was 6.8‰. Soil δ13C was -20.3‰. After 14 years of implementation, approximately 40% of the total C in the topsoil (0-20 cm depth) was derived from the AFS biomass input, predominantly from the C3 photosynthetic pathway. The studied biodiverse AFS that replaced a degraded agricultural field in the Cerrado region showed to be responsive both in terms of soil and plant C and N pools and fluxes.

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Environmental performance of agroforestry systems in the Cerrado biome, Brazil

Cited by 25 publications

References 92 publications

Biome Awareness Disparity is BAD for tropical ecosystem conservation and restoration

Biome Awareness Disparity is BAD for tropical ecosystem conservation and restoration

Viabilidade financeira de sistemas agroflorestais biodiversos no Centro Oeste Brasileiro

Carbon and nitrogen dynamics in a successional agroforestry system in the Neotropics

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