Pedosphere 35(6): 971--982, 2025
ISSN 1002-0160/CN 32-1315/P
©2025 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Soil microbial biomass carbon and metabolic changes induced by different ecological restoration systems in the Amazon |
Paula Adriana Medeiros DE CASTRO1, Ingo ISERNHAGEN2,3, Rafael ARRUDA4, Anderson FERREIRA2,5 |
1 Programa de pós graduação em Ciências Ambientais, Universidade Federal de Mato Grosso, Sinop MT 78550-000 (Brazil);
2 Empresa Brasileira de Pesquisa Agropecuária (Embrapa) Agrossilvipastoril, Sinop MT 78550-970 (Brazil);
3 Embrapa Florestas, Colombo PR 83411-000 (Brazil);
4 Laboratório de Quiropterologia Neotropical, Instituto de Ciências Naturais, Humanas e Sociais, Universidade Federal de Mato Grosso, Sinop MT 78550-000 (Brazil);
5 Embrapa Trigo, Passo Fundo RS 99050-970 (Brazil) |
| ABSTRACT |
| The Amazon boasts high diversity in fauna, flora, and microorganisms, but anthropogenic actions could lead to environmental imbalances, resulting in degradation. An alternative to restore these ecological processes is ecological restoration, involving ecosystem recovery. One way to assess changes in these environments during ecological restoration processes is through studies using microbiological indicators of soil quality. Thus, the hypothesis of this study was that the quantity and activity of microorganisms would vary according to the vegetative cover provided by different ecological restoration strategies and over time. This study aimed to evaluate whether different ecological restoration strategies influence the quantity of microbial biomass carbon, enzyme activity, and functional diversity of soil microbial communities. Seven treatments were set up: planting native and eucalyptus seedlings; planting native, açaí, and rubber tree seedlings; planting native seedlings; seeding of native species and green manure and planting of eucalyptus seedlings; row seeding of native plants, green manure, and eucalyptus; passive natural regeneration management; and planting native seedlings without thinning and pruning. In addition, native forest was included as a reference. Microbial biomass carbon showed great variation at the beginning of the experiment, and it became uniform across treatments over seven years. The activity of β-glucosidase did not exhibit differences between treatments, and acid phosphatase activity showed variation in the second year. Evaluation of these microbiological parameters revealed that the treatments with green manure achieved better results over time, aiding in directing ecological restoration strategies and maintaining microbial biodiversity. |
| Key Words: enzyme activity|functional diversity|metabolic diversity|microbial biomass|microbiological indicators |
| Citation: de Castro P A M, Isernhagen I, Arruda R, Ferreira, A. 2025. Soil microbial biomass carbon and metabolic changes induced by different ecological restoration systems in the Amazon. Pedosphere. 35(6): 971-982. |
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