Carbon sequestration and nutrient cycling in agroforestry systems on degraded soils of Eastern Amazon, Brazil
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Carbon sequestration and nutrient cycling in agroforestry systems on degraded soils of Eastern Amazon, Brazil Danielle Celentano . Guillaume Xavier Rousseau . Larissa Santos Paixa˜o . Francisneide Lourenc¸o . Ernesto Go´mez Cardozo . Thiago Oliveira Rodrigues . Hulda Rocha e Silva . Ju´lio Medina . Tatiane Marques C. de Sousa . Ariadne Enes Rocha . Fabrı´cio de Oliveira Reis
Received: 25 November 2019 / Accepted: 20 April 2020 Ó Springer Nature B.V. 2020
Abstract Land degradation and rural poverty are widespread in the Eastern Brazilian Amazon. Slashand-burn agriculture is the main source of livelihood in small farms but also a driver of degradation. In this context, Agroforestry Systems (AFS) are an alternative for climate change mitigation and land restoration, allying food security and ecosystem services reestablishment. We evaluated the increment of carbon stock (aboveground biomass, necromass, and soil) and standing litter nutrients in AFS and compared Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10457-020-00496-4) contains supplementary material, which is available to authorized users.
with natural succession. Treatments were established in 30 9 30 m plots with six repetitions (randomized block design) on a very degraded soil at UEMA School farm, in Eastern Amazon. In AFS, the 17 planted tree species of local interest (for fruit, timber, N-fixing) were associated with agricultural species and fertilized according to local standards. Carbon stock was measured in 2012 before the experiment setup (baseline) and in 2018. Aboveground carbon increment (Mg ha-1) was higher in AFS (26.79 ± 23.41) than in natural succession (1.13 ± 1.5), because of tree and shrub cover as a result of planting efforts. We found very high variability in plant development and carbon
D. Celentano (&) G. X. Rousseau L. S. Paixa˜o F. Lourenc¸o E. G. Cardozo T. O. Rodrigues H. R. e Silva J. Medina T. M. C. de Sousa F. de Oliveira Reis Agroecology Postgraduate Program (PPGAgroecologia), Maranha˜o State University (UEMA), Av. Lourenc¸o Vieira da Silva, 1000, Jardim Sa˜o Cristova˜o, Sa˜o Luı´s, MA 65055-310, Brazil e-mail: [email protected]
T. O. Rodrigues e-mail: [email protected]
G. X. Rousseau e-mail: [email protected]
F. de Oliveira Reis e-mail: [email protected]
L. S. Paixa˜o e-mail: [email protected] F. Lourenc¸o e-mail: [email protected]
H. R. e Silva e-mail: [email protected] J. Medina e-mail: [email protected] T. M. C. de Sousa e-mail: [email protected]
H. R. e Silva National Institution of Colonization and Agrarian Reform (INCRA). Rua H, Quadra E, Lote 01, No 12, Turu, Sa˜o Luı´s, MA 65067-150, Brazil
E. G. Cardozo e-mail: [email protected]
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Agroforest Syst
sequestration between plots. Soil organic carbon did not present increment between 2012 and 2018, and no differences between treatments were found in 2018. Species choice plays a keyhole
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