29/08/2016 15h25 - Updated 29/08/2016 15h25

Black Earth's southern Amazon region is analyzed in soil research

The areas studied are in the municipality of Apuí, in the southern Amazon region.
Photo: disclosure

A study by the PhD in Soil Science from the Federal University of Santa Maria (UFSM), Luis Antonio dos Santos Coutrim, seeks to determine the mineralogical changes and characterize the chemical composition of organic matter occurred in archaeological black earth soils, in the southern Amazon region.

The research project, which began in 2015, It is promoted by the Government of Amazonas, through the Program of Support to Human Resources Training Postgraduate to the Amazonas State Interior (RH-Internalization), the Foundation for the State of Amazonas Research (Fapeam).

according to Luis, the black earth soils are considered one of the most fertile in Brazil, and has occurred only in the Amazon. This caught the attention of the researcher who decided to work with this theme since graduation. "I chose this topic because I've worked with archaeological black earth since the time of college, in Humaita (AM), and then continued with the theme of the master, in Recife (ON). Now I'm in graduate and proceed with research in this area, because the black earth soils a lot of attention due to their training and are today explanatory studies to learn how actually these soils have been formed ", said Louis.

During the project the mineralogical changes are studied that may have occurred during the formation of anthropogenic soils - significantly modified by intensive soil and continued man, by farm, mineral, urbana, etc. - the region, Besides the mulatto land soils and not anthropogenic soils, that is, who suffered no human intervention.

The areas studied are in the municipality of Apuí, in the southern Amazon region, where trenches will be opened for morphological characterization, physical, chemical and mineralogical soil, studying its density, for example. The mineralogical analyzes will be determined what types of minerals predominate in the soil and they have changed during the process of formation of black land.

According to Louis, soil analysis will also be investigated by Nuclear Magnetic Resonance (MRI). "This analysis is to identify which are the primary carbon groups that are part of organic matter and will allow whether the soil organic matter have a greater or lesser stability", he explained.

These analyzes will serve as a contribution to understanding and make inferences about the formation of anthropogenic soils of the Amazon, as well as understand its stability amid this environment.

Expected results
According to Luis Santos, the purpose of this research project is to result in the release of this study which will be published as articles in national and international journals, becoming a reference for future studies in the southern Amazon region. "As a contribution to Science, the work will generate information on the archaeological black earth soils and mulatto land in the Brazilian Amazon, mainly on the chemical composition of organic matter soils. We finalize this project in February 2018. ", said researcher.

The results of the studies are still under review, but Luis, start this research in a city in the interior of the Amazon is a big step to promote further the state and show the wealth that he has.

Support Fapeam
for Louis, Fapeam encourages the State researchers to develop their projects in the best research centers in Brazil, By means of studies and scientific programs bags. "The Amazon is still a little-known region scientifically. With this support from Fapeam, More work can be developed. Many of the research today have important results for the Amazon would not have been able to be performed without the incentive of the Research Support Foundation of our state ", said Santos.

Other partners supporting Luis research project are the Federal University of Amazonas (I trust), with assistance in the field of collection, and the Rural Federal University of Pernambuco (UFRPE), with the provision of equipment for carrying out mineralogical analysis.

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