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标题：Classification of radicular biomass and monitoring of litter in Pantanal and Cerrado Mato-Grossense
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作者：Ana Carolina Freitas da Silva Taques ; Osvaldo Borges Pinto Junior ; George Louis Vourlities 等
期刊名称：Revista Ibero-Americana de Ciências Ambientais
电子版ISSN：2179-6858
出版年度：2020
卷号：11
期号：7
页码：501-512
DOI：10.6008/CBPC2179-6858.2020.007.0040
出版社：Escola Superior de Sustentabilidade
摘要：The quantification of root biomass and the assessment of its dynamics in forest ecosystems has been intensified due to its important role in carbon sequestration and storage and the possible consequences under climate change conditions. In general, biomass stocks between and within forest ecosystems are highly variable. It is necessary to study all the different components of vegetation, however, the vast majority of the works found in the literature, address only the biomass of the aerial part of the plants, with few studies involving the quantification of these stocks by the roots, in the different ecosystems. The present study objective quantify and classify a root biomass with a depth of 0 to 10 cm, and to monitor accumulated litter in the soil (litter pool), in two different regions, in the Pantanal (Acurizal) and in the Cerrado (Sensu stricto) Mato-Grossense. The root biomass was obtained by means of unformed soil samples (0-10 cm) and the roots were classified by diameter, with the aid of digital calipers, between thick (> 10 mm), medium (5-10 mm), slightly thin (2-5 mm) and fine (<2 mm). The samples collected monthly between August 2018 and July 2019. Was observed that in both areas, about 90% of the roots collected, were fine (<2 mm). The root density in Acurizal was on average 124.92 g/m² and in Sensu stricto it was on average 57.5 g/m². The difference in root density in the soil, between the two study areas, significant (p<0.05). However, there no significant difference in root density between the dry and wet periods in each area. The monthly average of litter pool in the area of Acurizal and Sensu stricto was, respectively: 526.52 g/m² and 588.96 g/m². In both areas, the accumulated litter was significantly different between periods of drought and precipitation.
关键词：Diâmetro de raízes; Estoque de carbono no solo; Biomassa florestal