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Growth and breakdown of fine roots in soil in Cerrado preserved and in regeneration (São Carlos-SP)

Grant number: 13/26273-3
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): April 01, 2014
Effective date (End): March 31, 2015
Field of knowledge:Biological Sciences - Ecology
Principal Investigator:Marisa de Cassia Piccolo
Grantee:Lucas de Camargo Reis
Home Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The Savannah , or Cerrado environments as they are known in Brazil , are of great importance for humanity. In this environment live nearly a fifth of the world's population and is concentrated much of agriculture, and a significant portion of water resources and biodiversity. The Brazilian Cerrado was the most affected by the expansion of the agricultural frontier and the growth of cities in the last century , and this situation tends to persist in the coming years ecosystem . To establish a balance of human action in this environment , then many studies have been carried out . Regarding studies of native vegetation , much progress has been made regarding the plant shoots . As for the underground parts , roots , due to methodological difficulties of studies of the root system ( based on laborious forms of destructive sampling) , no such advancement was similar . However , in some species of the Cerrado , the root system can represent up to 70 % of the total biomass , which is therefore of great environmental importance , including the accounting for the accumulation of carbon in the atmosphere . The present study aims to study the dynamics ( growth and decay ) of fine roots in the soil under the vegetation preserved Cerrado ( Cerradão ) and regeneration ( Cerrado sensu strictu ) . Being used for both a non-destructive method , using Minirhizotrons in order to evaluate the root system in the rainy season . This research project will complement the scientific research studies to evaluate the root system which is being held in the Cerrado , the Project Assistance FAPESP ( 2012/13484-3 in ) "Models of Determination of Soil Quality Index ( SQI) for areas Cerrado in the State of Sao Paulo . "