5 results

Soil organic carbon sequestration under Araucaria angustifolia plantations but not under exotic tree species on a mountain range

Yuri Lopes Zinn ORCID logo , Ricardo Cardoso Fialho ORCID logo , Carlos Alberto Silva ORCID logo

19/jun/2024

ABSTRACT Plantation forests can be efficient C sinks in biomass and soil organic carbon (SOC), but the latter depends on many factors, including climate. Tropical humid, mountain areas have cooler temperatures, slowing microbial decomposition, and thus can store considerable SOC. However, the effects of forest plantations on SOC of these montane areas are still poorly studied. Here, we aimed to assess changes in SOC, and related soil properties, after conversion of native rainforest to plantations of five tree species, with […]

Visual Abstract

Microbial contribution to the carbon flux in the soil: A literature review

Lucas Carvalho Basilio Azevedo ORCID logo , Simone Cristina Braga Bertini ORCID logo , Adão Siqueira Ferreira ORCID logo , Nathalia Silva Rodovalho ORCID logo , Luiz Fernando Romanholo Ferreira ORCID logo , Ajay Kumar ORCID logo

25/mar/2024

ABSTRACT Carbon flows into and out of the soil are important processes that contribute to controlling the global climate. The relationship between soil organisms and the climate is interdependent since the organisms that contribute to carbon and greenhouse gas fluxes are simultaneously affected by climate change and soil management. Temperature, soil moisture, pH, nutrient level, redox potential and organic matter quality are key elements affecting the microorganisms involved in organic carbon flows in the soil. Climate, topography (slope and position […]

Visual Abstract

Physicogenic and biogenic aggregates under different management systems in the Cerrado region, Brazil

Luiz Alberto da Silva Rodrigues Pinto ORCID logo , José Luiz Rodrigues Torres ORCID logo , Igor de Sousa Morais ORCID logo , Robert Ferreira ORCID logo , Wanderson Farias da Silva Júnior ORCID logo , Sandra de Santana Lima ORCID logo , [...]

23/abr/2021

ABSTRACT An important strategy for the sustainable management of Cerrado soils is no-till (NT) systems, which may improve soil properties, particularly aggregation. Soil aggregates can be categorized according to their formation pathways into physicogenic (Phy) and biogenic (Bio). This study aimed (i) to quantify the relative proportion of physicogenic and biogenic aggregates and (ii) evaluate the levels of total organic carbon and their respective humic and physical fractions in the aggregates’ formation pathways. The following managed and unmanaged sites were […]

Visual Abstract

Decomposition of black oat straw and pig slurry in a soil under no-tillage

Celso Aita, Ivan Carlos Chiapinotto, Sandro José Giacomini, André Paulo Hübner, Marcelo Gonçalves Marques

01/fev/2006

The use of pig slurry in no-tillage systems is relatively recent in South Brazil, so it is important to evaluate the decomposition of pig slurry as well as its effects on the cover crop residue decomposition in this system. The objective of this study was to evaluate the pig slurry decomposition and its influence on the decomposition rate of black oat straw in a soil under no-tillage. Two experiments were carried out under field conditions in an experimental area of […]

Decomposição de palha de aveia preta e dejetos de suínos em solo sob plantio direto

Celso Aita, Ivan Carlos Chiapinotto, Sandro José Giacomini, André Paulo Hübner, Marcelo Gonçalves Marques

01/fev/2006

A aplicação dos dejetos de suínos em sistema plantio direto é uma prática relativamente recente no Sul do Brasil. É necessário avaliar, nesse sistema, a decomposição dos dejetos, bem como seus efeitos sobre a decomposição dos resíduos culturais das plantas de cobertura. O objetivo deste trabalho foi avaliar a decomposição de dejetos de suínos e sua influência sobre a velocidade de decomposição da palha de aveia preta, em solo sob plantio direto. Para isso, foram realizados dois experimentos em condições […]