ESTOQUE DE CARBONO E AGREGAÇÃO DO SOLO SOB FRAGMENTOS FLORESTAIS NOS BIOMAS MATA ATLÂNTICA E CERRADO

• Autor(a) principal: Barros Ozório, Jefferson Matheus
• Data de Publicação: 2019
• Outros Autores: Rosset, Jean Sérgio, Schiavo, Jolimar Antonio, Panachuki, Elói, Souza, Camila Beatriz da Silva, Menezes, Roniedison da Silva, Ximenes, Thiago Sandin, Castilho, Selene Cristina de Pierri, Marra, Leandro Marciano
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Brasileira de Ciências Ambientais (Online)
• Texto Completo: https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/518
• topic: avaliação ambiental; efeito de borda; qualidade do solo.; environmental assessment; edge effect; soil quality.

Carbon stock (EstC) and soil aggregation were studied in and around forestfragments of the Atlantic Forest (AF) and Cerrado (CE) biomes. Soil sampleswere collected from four forest fragments; two in AF and two in CE. Inthe fragments, three internal points were sampled: edge (EF), half radius(HR) and center (FC), besides a point around; no-tillage system (NTS) andpermanent pasture (PP) in AF and CE, respectively. Total organic carbon(TOC) and soil density (Sd) were determined with EstC calculations andaggregate stability. In AF, Sd reached 1.19 Mg m-3. Higher TOC and EstCcontents were verified in the FC, reducing the FC EstC for more peripheralpoints. Less soil structural stability was found in the surrounding NTS areas.The areas of PP around the CE fragments presented higher Sd. The TOCcontents and EstC values were heterogeneous between the internal pointsof the CE fragments. In the CE fragments, the structural variables did notdiffer from the surrounding PP areas. The TOC and EstC indicate the mostconserved FC point in the AF fragments. In CE, the PP areas presented thesame potential of carbon accumulation in subsurface layers in relation tothe fragments. Forest fragmentation, in both studied biomes, modified thephysical attributes of the soil, besides influencing the carbon storage patternsinside the fragments.