Influence of agroforestry systems on phosphorus export from small tropical watersheds

Verde, Bianca Souza Cana; Brandão, Haialla Carolina Rialli Santos; Souza, Jéssica Carneiro de; Silva, Daniela Mariano Lopes da

doi:10.1007/s10457-023-00825-3

Cited by 3 publications

(1 citation statement)

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“…Some of these services include an increase in groundwater recharge, an increase in harmonious relationships of pollination, dispersal, and facilitation, as well as pest control through natural enemies, reducing the need for agricultural chemicals and chemical fertilizers, which account for the majority of costs in agricultural production (Altieri 2002;McNeely and Schroth 2006;Jose 2009;Kennedy et al 2013). In ecological systems, the management allows for natural nutrient cycling and water percolation in the soil, reducing the impact of abrupt rainfall in the semi-arid region and requiring less external fertilizer input (Menezes et al 2002;Sacramento et al 2013;Gliessman 2014;Cana Verde et al 2023). These systems allow for the concurrent cultivation of forage, which can provide animal feed during the most critical times of the year and can also be used to restore degraded areas by improving soil conditions, maximizing positive interactions between ecological agents, and promoting natural succession (Bishaw et al 2022;Sarto et al 2022).…”

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confidence: 99%

Implementation and costs of agroforestry system in a degraded area of Brazilian Semi-Arid region

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Sousa

Nogueira

et al. 2023

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The Brazilian semi-arid region is characterized by scarce water and often saline soils, and the agricultural practices there contribute to desertification. Most of the land in this region is used for subsistence and income generation through the use of forestry resources, but the traditional management practices of clearing areas with fire and cutting trees result in long-term ecosystem degradation. Agroforestry systems (AS) are an alternative to traditional systems that incorporate ecological concepts and aim to increase ecosystem services while maintaining ecological relationships. This study aimed to analyze the implementation of an agroforestry system in a degraded urban area, estimate the costs of implementation, and observe the development of vegetation after 3 years. The initial attempt to implement the system failed due to direct seeding, but the method was changed after 6 months by using 4-month-old seedlings. The costs of the system involved preparation and planting expenses, as well as maintenance. All individuals in the sample area were measured for diameter, height above ground, and maximum height, and their phytosociological parameters were calculated. The study found that agroforestry systems are feasible in the semi-arid region and that species such as Ceiba, Gliricidia, and Moringa have fast growth and can increase organic matter in the semi-arid systems. After 3 years, the system had a basal area of 6.37 m²/ha and a carbon stock of 17.69 Mg/ha. The implementation costs were R$ 5,120.47 ($ 988.68), totaling R$ 57,468,79/ha ($ 11,096.29/ha), which were considered relatively low compared to other studies on degraded area restoration. ASs can be seen as an alternative for small producers, allowing them to generate income, ensure conservation, and improve social conditions, ensuring sustainability.

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