Journal of Soils and Sediments

, Volume 14, Issue 3, pp 525–537

Use of geophysical methods for the study of sandy soils under Campinarana at the National Park of Viruá, Roraima state, Brazilian Amazonia

  • Bruno Araujo Furtado de Mendonça
  • Elpídio Inácio Fernandes Filho
  • Carlos Ernesto Gonçalves Reynaud Schaefer
  • Anôr Fiorini de Carvalho
  • José Frutuoso do ValeJr.
  • Guilherme Resende Corrêa
SOILS, SEC 2 • GLOBAL CHANGE, ENVIRON RISK ASSESS, SUSTAINABLE LAND USE • RESEARCH ARTICLE

DOI: 10.1007/s11368-013-0811-2

Cite this article as:
de Mendonça, B.A.F., Filho, E.I.F., Schaefer, C.E.G.R. et al. J Soils Sediments (2014) 14: 525. doi:10.1007/s11368-013-0811-2

Abstract

Purpose

The vegetation of the Campinaranas occurs in humid areas with hydromorphic sandy soils at the Amazon region. Thus, the determination and in situ monitoring of moisture content in Campinarana soils, besides the detection of subsurface layers are key measures for studying these soil–vegetation systems. Also, the application of ground penetrating radar (GPR) in deep sandy sedimentary sequence of Amazonia is a promising tool to enhance the knowledge on depositional and soil formation features.

Materials and methods

We studied representative soils of the Campinaranas at the National Park of Viruá, state of Roraima (Brazilian Amazonia), through the use of geophysical methods (soil moisture sensors and GPR). The study was applied in four sandy soils. Besides chemical and physical analysis of soils, soil moisture sensors were installed for monitoring during an entire hydrological year (2010/2011), and performed the calibration of sensors , coupled with imaging of the soil along transects with GPR.

Results and discussion

As a result of calibration of the soil moisture sensors we obtained a general equation with an R2 greater than 0.9. There is an influence of soil moisture content and soil temperature in the distribution of vegetation types in Campinaranas. The use of GPR identified some determinants characteristics in these soils for the differentiating the Campinaranas, represented by spodic and C horizons.

Conclusions

The spodic horizons in soils under Forest Campinarana provided potential errors in the determination of soil moisture, requiring calibration data for the precise use of this device. The investigation of the soil through the GPR showed interesting results, which allowed continuous visualization of the main soil horizons along transects in the phytophysiognomies of Campinaranas.

Keywords

CampinaranaGPRMoisture sensor calibrationSandy soilsSoil moisture monitoring

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Bruno Araujo Furtado de Mendonça
    • 1
  • Elpídio Inácio Fernandes Filho
    • 1
  • Carlos Ernesto Gonçalves Reynaud Schaefer
    • 1
  • Anôr Fiorini de Carvalho
    • 1
  • José Frutuoso do ValeJr.
    • 2
  • Guilherme Resende Corrêa
    • 3
  1. 1.Soil DepartmentFederal University of ViçosaViçosaBrazil
  2. 2.Soil and Agricultural Engineering DepartmentFederal University of RoraimaBoa VistaBrazil
  3. 3.Biodiversity and Forest InstituteFederal University of West of ParáSantarémBrazil