THE THE USE OF PHYTOMASS IN THE RECOVERY OF DEGRADED SOIL

Authors

DOI:

https://doi.org/10.4215/rm2019.e18028

Keywords:

área degradada, fitomassa, nutrientes, cupuaçu, erosão.

Abstract

The objective of this study was to evaluate the recovery of a degraded area using phytomass together with Theobroma Grandiflorun Schum (cupuassu). A further aim was to monitor the growth of individual plants of the species in question, measure the nutrients added to the soil; compare the physical soil properties between the plots with and without phytomass, and estimate the increase of the matter in the soil’s surface horizons from the decomposition of the added phytomass. The soil degradation level was evaluated through impact penetrometer tests and a Guelph Permeameter. Soil samples were collected to analyze particle size, and bulk and real density. Allometric measurements of the seedlings were

performed every four months, concurrently with the renewal of the phytomass on one of the plots. These measurements aimed to monitor the vertical growth and development of the crown. The findings show that the seedlings in the plot with the addition of phytomass developed better, however, in the final stages it was observed that of the 30 initial individuals only two in the control plot and one in the phytomass plot survived. The results indicate that Theobroma Grandiflorun Schum has no potential to recover degraded areas. Nevertheless, the use of phytomass improved the soil characteristics, first by acting as protection and so reducing leaching. It also helped replace nutrients in the soil layers and improve soil porosity.

Keywords: degraded area, phytomass, nutrients, cupuassu, erosion.

Author Biographies

  • Armando Brito da Frota Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro (RJ), Brasil

    Doutorando em Geografia pela Universidade Federal do Rio de Janeiro - UFRJ. Possui experiência na área de Geografia Física, com ênfase em Geomorfologia e Pedologia, atuando principalmente nos seguintes temas: Bacias Hidrográficas, geomorfologia de encostas, processos erosivos, vulnerabilidade erosiva, impactos ambientais, mudanças da paisagem e Geografia Física e Ensino.

  • Antonio Fábio Sabbá Guimarães Vieira, Universidade Federal do Amazonas, Manaus (AM), Brasil

    Doutorado em Geografia pela Universidade Federal de Santa Catarina (2008). Coordenador do Laboratório de Análise e Tratamento de Sedimentos e Solos - LATOSSOLO/DEGEO-UFAM. Lider do Grupo de Pesquisa Geografia Física da Amazônia. Membro docente do Programa de Pós-Graduação em Geografia da UFAM. Tem experiência na área de Geociências, com ênfase em Geografia Física, atuando principalmente nos seguintes temas: voçorocas (estudo, monitoramento e contenção), impactos ambientais (identificação e recuperação de áreas degradadas), movimentos de massa (deslizamentos, desmoronamentos, etc.), solos (descrição morfológica) e mais recentemente Climatologia (Clima Urbano). 

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Published

2019-11-22

Issue

Vol. 18 (2019)

Section

Artigos

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