Agroforestry can improve soil fertility and aggregate-associated carbon in highland soils in the Brazilian northeast

Macedo, Rodrigo Santana; Moro, Letícia; Sousa, Cristiano dos Santos; Carneiro, Kalline de Almeida Alves; Campos, Milton César Costa; Bakker, Alexandre Pereira de; Beirigo, Raphael Moreira

doi:10.1007/s10457-023-00875-7

Cited by 6 publications

(1 citation statement)

References 49 publications

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“…Overall, soils in the Amazon region are characterized by high acidity and low natural chemical fertility, so we can infer that despite AFS 4 and the FLO being older, the low levels of Ca, Mg, and V % in these ecosystems may be associated with the absence of liming, since Ca and Mg are the main inputs for this soil preparation stage (Siepel et al 2019), consequently in uencing the V % (Macedo et al 2023).…”

Section: Soil Chemical Attributesmentioning

confidence: 99%

Physical and chemical soil quality and litter stock in agroforestry systems in the Eastern Amazon

de Souza,

Santos,

Martins

et al. 2024

Preprint

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The influence of biodiversity and age of agroforestry systems (AFS) on the provision of ecosystem services, such as nutrient cycling, needs to be better understood to support management practices that promote such services. This study aimed to quantify and compare litter stock and the physical and chemical attributes of soil in four AFSs with different ages and arrangements to a secondary forest (FLO) in the Eastern Amazon. Litter stock did not differ among the AFSs, but the youngest AFS was lower (5.73 ± 1.04 Mg ha− 1) than in FLO (11.42 ± 2.44 Mg ha− 1). Similarities were found between FLO and the oldest AFS for most of the soil chemical attributes. The soil pH in AFSs was higher than in FLO in the surface layer, and the organic matter content of FLO did not differ from 2 and 51-year-old AFSs. The Al content and aluminum saturation of younger and 26 years-old AFSs were lower than in FLO. Particle density and total porosity did not differ among ecosystems, while soil density in the two younger AFSs was higher than in FLO. According to PCA results, variables such as organic matter, CECpH7, H + Al, Al content, and m % tended to be higher in FLO and oldest AFS. It was evident that the maturity and diversity of AFSs are relevant factors for Amazonian agroforests, as they offer positive impacts on ecosystem functionality, such as nutrient cycling and water retention.

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Section: Soil Chemical Attributesmentioning

confidence: 99%

Physical and chemical soil quality and litter stock in agroforestry systems in the Eastern Amazon

de Souza,

Santos,

Martins

et al. 2024

Preprint

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An assessment of the shade and ground cover influence on the mitigation of water-driven soil erosion in a coffee agroforestry system

Blanco-Sepúlveda,

Lima,

Aguilar-Carrillo

2024

Agroforest Syst

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Coffee cultivation under agroforestry systems is one of the main agricultural activities in Central America, but climate change is putting its sustainability at risk. Rainfall erosivity has worsened, thus driving soil losses. Although the vegetal covers in coffee agroforestry systems play a crucial role in controlling erosion, the specific influence of each cover layer remains unclear. In this study, we assessed the influence of the canopy (tree and banana cover and coffee cover) and ground cover (weed and litter) on water driven soil erosion, to determine which type of cover has the most influence on soil erosion control. The study site is situated in the core and buffer zones of the Macizo de Peñas Blancas National Park (Nicaragua), where seventeen coffee sampling plots with an agroforestry system composed of an Inga spp and Musa spp canopy cover were analysed. The results showed that the 19.2 ± 3.4% of the soil surface was affected by erosion and it was mainly related to the litter ground cover (r = –0.95, P < 0.001). Also, this cover presented the best partial correlation (ryl.tcw = –0.93, P < 0.001) when the effects of the other vegetal covers were eliminated. Specifically, the litter cover accounted for 90% of the erosion variability, while the impact of the other types of cover was negligible, accounting for just 1% of the erosion. We conclude that litter layer is more important than canopy cover for effective erosion control, and the main function of shade trees is as a source of litter biomass.

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Agroforestry systems in Latin America

López-Sampson,

Andrade

2024

Agroforest Syst

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Agroforestry can improve soil fertility and aggregate-associated carbon in highland soils in the Brazilian northeast

Cited by 6 publications

References 49 publications

Physical and chemical soil quality and litter stock in agroforestry systems in the Eastern Amazon

Physical and chemical soil quality and litter stock in agroforestry systems in the Eastern Amazon

An assessment of the shade and ground cover influence on the mitigation of water-driven soil erosion in a coffee agroforestry system

Agroforestry systems in Latin America

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