Florística e estrutura de fragmento florestal em área de transição na Amazônia Matogrossense no município de Sinop

Araújo, Rosalia de Aguiar; Costa, Reginaldo Brito da; Felfili, Jeanine Maria; Gonçalvez, Ivani Kuntz; Sousa, Roberto Antônio Ticle de Melo e; Dorval, Alberto

doi:10.1590/s0044-59672009000400015

Cited by 35 publications

(26 citation statements)

References 23 publications

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“…The soil in the experimental site is classified as a Latossolo Vermelho-Amarelo Distrófico (Santos et al, 2013) The experimental plot began to be deforested in 1984 for cassava (Manihot esculenta Crantz) production (Araujo et al, 2009); this deforestation ended in the 2000s. In the early 1990s, the area started to be planted to rice (Oryza sativa L.) and later soybean (Glycine max (L.) Merr.)…”

Section: Methodsmentioning

confidence: 99%

Water Erosion on an Oxisol under Integrated Crop-Forest Systems in a Transitional Area between the Amazon and Cerrado Biomes

Rieger

Zolin

Paulino

et al. 2016

Rev. Bras. Ciênc. Solo

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Section: Methodsmentioning

confidence: 99%

Water Erosion on an Oxisol under Integrated Crop-Forest Systems in a Transitional Area between the Amazon and Cerrado Biomes

Rieger

Zolin

Paulino

et al. 2016

Rev. Bras. Ciênc. Solo

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“…O trabalho foi realizado na área experimental da Embrapa Agrossilvipastoril, em região de transição entre Cerrado e Floresta Amazônica (Araujo et al, 2009), em Sinop, MT (11°51'S, 55°35'W, a 384 m de altitude). O clima da região segundo a classificação de Köppen é do tipo Aw, tropical com inverno seco, com médias anuais de temperatura de 25ºC, umidade relativa de 82,5% e precipitação de 2.550 mm (Instituto Nacional de Meteorologia, 2013).…”

Section: Methodsunclassified

Distribuição horizontal e vertical de fósforo em sistemas de cultivos exclusivos de soja e de integração lavoura-pecuária-floresta

Diel

Behling

Neto

et al. 2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a distribuição horizontal e vertical do fósforo no solo e a produtividade de soja em sistemas de cultivos exclusivos e de integração lavoura-pecuária-floresta (ILPF). Foram avaliados os tratamentos: floresta plantada de eucalipto; lavoura de soja e milho safrinha consorciado com Urochloa brizantha 'Marandu'; pastagem de U. brizantha; sistema de ILPF; e duas áreas controle, com floresta nativa e pousio. O solo foi coletado nas camadas de 0-5, 5-10, 10-20 e 20-30 cm, para determinação das características químicas. As avaliações foram realizadas no segundo ano agrícola após a implantação do experimento. No sistema de ILPF, solo e produtividade foram avaliados em quatro transectos equidistantes, no centro do renque e a 3, 6, 10 e 15 m do renque, nas faces norte e sul. Os teores de P disponível (Mehlich-1) foram maiores nas camadas superficiais do solo, nos sistemas com soja/milho safrinha e com ILPF. No ILPF, os teores de P disponível não diferiram entre as distâncias do renque das árvores, e a produtividade de soja não diferiu da observada no sistema com soja/milho safrinha. Portanto, com dois anos de implantação, o sistema ILPF ainda não é capaz de interferir marcadamente nas características químicas do solo e na produtividade da soja.Termos para indexação: Eucalyptus, agrossilvipastoril, ILPF, nível crítico, P remanescente, sistemas de produção. Phosphorus horizontal and vertical distribution in single soybean crop and in integrated crop-livestock-forest systemsAbstract -The objective of this work was to evaluate the horizontal and vertical distribution of soil phosphorus and soybean yield in single-crop and in integrated crop-livestock-forest (ICLF) systems. The evaluated treatments were: forest planted with eucalyptus; soybean crop and off-season corn intercropped with Urochloa brizantha 'Marandu'; U. brizantha pasture; ICLF system; and two control areas, with native forest and fallow. Soil samples were taken at the depths of 0-5, 5-10, 10-20, 20-30 cm for determining chemical characteristics.Evaluations were done in the second crop year after the implementation of the experiment. In the ICLF system, soil and yield were evaluated in four equidistant transects, at the center of the tree rows, and at 3, 6, 10, and 15 m from the rows on the northern and southern sides. Available P levels (Mehlich-1) were greater at the upper soil layers, in the systems with soybean/off-season corn and ICLF. In ICLF, available P contents did not differ between the distances from the tree rows, and soybean yield did not differ from the one observed in the soybean/off-season corn system. Therefore, a two-year ICLF is not yet capable of major interference on soil chemical characteristics and on soybean yield.

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“…These two phytophysiognomies have species commonly found in the Cerrado Biome (FELFILI et al, 2004;FAGG, 2007). Mezilaurus itauba is in the Amazon phytogeographical domain but it also occurs in the forest-savannah areas of Mato Grosso and Amazon (Brazil) (ARAÚJO et al, 2009).…”

Section: Resultsmentioning

confidence: 99%

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

Miguel

Rezende

Leal

et al. 2017

SCA

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This objective of this study was to characterize the floristic, structural, and ecological groups and to estimate the arboreal volume and biomass of a cerradão site in Palmas, Tocantins, Brazil. A forest inventory was conducted on 10.15 ha of the study area. Plots of 400-m 2 were used for systematic sampling. All standing trees (dead or alive) with a breast-height diameter (DHB) greater than 5 cm were identified and measured. Floristic diversity and horizontal structure were assessed using the Shannon and importance value indices, respectively. Forest vertical structure was classified into three stratata and the tree species were categorized into ecological groups. Ninety tree volumes were rigorously cubed and weighed. Fresh-and dry biomass were sampled and estimated. Mathematical models were applied and adjusted to estimate tree volume and biomass. It was observed that the species Myrcia splendens and Emmotum nitens and the families Fabaceae and Chrysobalanaceae were dominant in our study site. The pioneer (613 individuals ha -1 ) and climax (530 individuals ha -1 ) tree species group predominated. The floristic diversity index was estimated as 3.35 nats ind -1. The vertical structure analysis indicated fewer individuals in the superior stratum (13%) compared to the medium (63%) and inferior (24%) stratum. The Schumacher and Hall model showed better results with regard to estimated forest production. Forest volume and biomass estimates were 126.71 m³ ha -1 and 61.67 Mg ha -1 , respectively. The studied cerradão area had high floristic diversity and climax species predominated. Since this cerradão is in close proximity to the Amazon biome, its volume and biomass stocks were higher than those estimated for other cerradão and forest formations within the Cerrado biome. Key words: Brazil. Cerrado Biome. Forestry inventory. Ecological group. Production. ResumoO objetivo do estudo foi caracterizar a florística, a estrutura, o grupo ecológico e estimar os estoques de volume e biomassa arbórea em uma área de 10, 15 hectares de cerradão, localizado no município de Palmas, Estado do Tocantins, utilizando a amostragem sistemática com parcelas de 400 m². Foram amostradas e identificadas todas as árvores vivas e mortas em pé, com diâmetro a 1,3 metros do solo ≥ 5 cm. A diversidade florística foi avaliada pelo o índice Shannon e a estrutura horizontal pelo o Índice de Valor de Importância. Quanto a estrutura vertical, a floresta foi classificada em três estratos.

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Florística e estrutura de fragmento florestal em área de transição na Amazônia Matogrossense no município de Sinop

Cited by 35 publications

References 23 publications

Water Erosion on an Oxisol under Integrated Crop-Forest Systems in a Transitional Area between the Amazon and Cerrado Biomes

Water Erosion on an Oxisol under Integrated Crop-Forest Systems in a Transitional Area between the Amazon and Cerrado Biomes

Distribuição horizontal e vertical de fósforo em sistemas de cultivos exclusivos de soja e de integração lavoura-pecuária-floresta

Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

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