Estoque De Carbono E Agregação Do Solo Sob Fragmentos Florestais Nos Biomas Mata Atlântica E Cerrado

Ozório, Jefferson Matheus Barros; Rosset, Jean Sérgio; Schiavo, Jolimar Antônio; Panachuki, Elói; Souza, Camila Beatriz da Silva; Menezes, Roniedison da Silva; Ximenes, Thiago Sandim; Castilho, Selene Cristina de Pierri; Marra, Leandro Marciano

doi:10.5327/z2176-947820190518

Cited by 15 publications

(26 citation statements)

References 48 publications

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“…O entendimento do processo da formação estrutural do solo envolve a compreensão da interação dos aspectos biológicos, químicos, geológicos e físicos no contexto do ambiente edáfico. A estabilidade dos agregados pode ser compreendida como um reflexo da estrutura do solo por ser dependente do equilíbrio integrado desses fatores CECAGNO;BAYER, 2019;MELO et al, 2019;OZÓRIO et al, 2019).…”

Section: Introductionunclassified

Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Falcão

Monteiro

Ozório

et al. 2020

Rev. Bras. Ciênc. Ambient. (Online)

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O objetivo do trabalho foi avaliar o estoque de carbono e a agregação dosolo em diferentes sistemas de manejo no município de Aquidauana (MS).Foram coletadas amostras de solo na camada 0,0–0,1 m em seis áreas: soloexposto (SE), sistema de preparo convencional (PC), sistema plantio direto(PD), cana-de-açúcar (CA), pastagem permanente (PP) e mata nativa (MN).Das amostras, determinou-se: carbono orgânico total (COT), densidadedo solo (Ds), sendo calculados o estoque de carbono (EstC) e a variaçãono estoque de carbono (ΔEstC), além da análise de estabilidade de agregados.Obteve-se: diâmetro médio ponderado (DMP), diâmetro médio geométrico(DMG) e porcentagem de agregados retidos nas peneiras. Os resultados foramanalisados em delineamento inteiramente casualizado (DIC) e análise canônica.Os maiores valores de Ds foram observados nos sistemas SE 1,53 Mg m-3,PC 1,46 Mg m-3, PD 1,47 Mg m-3 e CA 1,46 Mg m-3. Os teores de COT das áreasde PP e PD foram superiores ao da MN. O EstC apresentou o mesmo padrãode COT. As áreas de PP e PD exibiram valores de DMP e DMG semelhante aMN. As áreas de PP, PD e MN tiveram mais de 60% dos seus agregados maioresque 2 mm. A análise canônica indicou a formação de três grupos, um com SEe PC, outro apenas com CA e o terceiro composto de PD, PP e MN. O SE e o PCcomprometem o estoque de carbono e a agregação do solo na camada 0–10cm, já a PP e o PD aumentaram o estoque de carbono nessa mesma camada.

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Section: Introductionunclassified

Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Falcão

Monteiro

Ozório

et al. 2020

Rev. Bras. Ciênc. Ambient. (Online)

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“…Barros and Fearnside (2016), studying carbon stock (C) on the edges of forest fragments in the Amazon biome, reported an increase in soil C stock in the first meters entering the fragments, when compared to areas of 300 meters within these fragments. However, studies that present the effects that fragmentation and edge effect can cause in C and in the edaphic characteristics of Brazilian biomes are still incipient in the literature (Ozório et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Physical fractions of organic matter and mineralizable soil carbon in forest fragments of the Atlantic Forest

Ozório¹,

Rosset²,

Schiavo³

et al. 2020

Rev. ambiente água

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This study determined the physical granulometric fractionation evaluated the mineralizable carbon within and around forest fragments of the Atlantic Forest biome located in the state of Paraná. Soil samples were collected at three three internal points of the fragments: the edge (E), the half radius (HR) and the center (CF); and one point in no-tillage system (NTS) areas around the fragments, in four replicates. The contents of total organic carbon (TOC), particulate fraction carbon (C-POM) and mineral fraction (C-MOM) were determined, and the %POM and %MOM and the stocks of POM (StockPOM) and MOM (StockMOM) were calculated, in addition to the indices: carbon stock index (CSI), lability (L), lability index (LI) and carbon management index (CMI), also evaluating CO2 emission, daily and accumulated. The highest TOC levels were observed in the CF point. The highest C-POM contents were observed in the E and CF points of fragment 1, in the CF point of fragment 2, and the highest C-MOM contents were expressed in the CF points of both fragments. CMI showed a distinct pattern among the fragments. The NTS areas showed lower C-CO2 emissions, with 39.8% and 28.3% less total emission compared to CF. The results of physical granulometric fractionation show the CF point favors the quality of SOM and the mineralizable carbon analysis indicated that the conversion of native areas into NTS compromises soil microbial activity.

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“…In the 0.05-0.10m layer, the SC, PP, and NTS presented contents of 11.63, 13.71, and 12.57 g kg -1 , respectively. These higher contents in the NF area are due to the higher litter deposition of different forest extracts (Ozório et al, 2019), which increases the TOC contents in the most superficial layers of the soil (Assunção et al, 2019). Several authors have reported higher TOC contents in higher native areas compared with production systems in different regions of Brazil, soil types, and management systems (Borges et al, 2019;Maia et al, 2019;Santos et al, 2019;Ferreira et al, 2020;Medeiros et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

“…The conversion of natural areas into production systems can, in addition to modifying the landscape, change the edaphic quality when not properly handled (Freitas et al, 2018). The different uses and managements directly influence soil attributes, such as carbon (C) (Lal, 2018;Ozório et al, 2019), besides causing changes in physical (Sales et al, 2018;Falcão et al, 2020), chemical (Souza et al, 2018;Assunção et al, 2019), and biological attributes of the soil (Borges et al, 2015;Barbosa et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Stock and indices of carbon management under different soil use systems

Morais

Silva

Rosset

et al. 2021

Rev. Bras. Ciênc. Ambient. (Online)

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The aim of this study was to evaluate the stock of total organic carbon (TOC) and to perform the physical-granulometric fractionation of soil organic matter (SOM) in different management systems (MS). Three MS and one reference area of Native Forest (NF) were studied, and the three systems were sugarcane (SC), permanent pasture (PP) and no-tillage system (NTS). Soil samples were collected in the 0–0.05, 0.05–0.10, 0.10–0.20-m layers. Soil density (Sd), TOC, stratification index (SI), carbon stock (StockC), variation in StockC (∆StockC), carbon content of particulate organic matter (C-POM) and mineral organic matter (C-MOM), carbon stock index (CSI), lability (L), lability index (LI), and carbon management index (CMI) were determined. The MS presented higher Sd than the NF area. The NF area had higher TOC contents in the first layers, reaching 25.40 g kg-1 in the 0–0.05-m layer, with the PP area having higher values than the NF in the 0.10–0.20-m layer. The NF area showed the highest levels of C-POM (15.25 g kg-1) and C-MOM (10.15 g kg-1) in the first layer. In the 0.10–0.20-m layer, the PP and NTS systems were superior to the others. Regarding the C-MOM content, SC and PP showed higher levels in the 0.10–0.20-m layer. The highest CMI values were observed in the NTS and PP areas in the 0.10–0.20-m layer. The MS increased the Sd and reduced the TOC levels. The different MS modified the POM fraction, and the MOM fraction was most impacted by the SC area. The lability of the SOM was altered by the MS in the most superficial layers.

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Estoque De Carbono E Agregação Do Solo Sob Fragmentos Florestais Nos Biomas Mata Atlântica E Cerrado

Cited by 15 publications

References 48 publications

Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Physical fractions of organic matter and mineralizable soil carbon in forest fragments of the Atlantic Forest

Stock and indices of carbon management under different soil use systems

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