Carbon and nutrient stocks in the litter layer of agroforestry systems in central Amazonia, Brazil

Tapia-Coral, Sandra; Luizão, Flávio J.; Wandelli, E. V.; Fernandes, E. C. M.

doi:10.1007/s10457-004-5152-0

Cited by 35 publications

(28 citation statements)

References 6 publications

(16 reference statements)

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“…However, in our study, litter N stock values increased only in the IF +P treatment, suggesting that P limited N fixation by the species used for fallow improvement. In general, our litter mass and nutrient stock values are consistent with the few available estimates for natural or improved fallow sites in the Amazon (Brienza Jr, 1999;Tapia-Coral et al, 2005).…”

Section: Discussionsupporting

confidence: 88%

Phosphorus Fertilization Increases Biomass and Nutrient Accumulation Under Improved Fallow Management in a Slash-and-Mulch System in Eastern Amazonia, Brazil

Rangel‐Vasconcelos

Kato

Vasconcelos

et al. 2017

Rev. Bras. Ciênc. Solo

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Improvement of fallow vegetation can have a positive impact on the productivity of slash-and-mulch systems in eastern Amazonia. Phosphorus fertilization can increase biomass and nutrient stocks in the fallow phase, thereby improving nutrient cycling and crop productivity. Here, we compared biomass and nutrient stocks under three fallow management strategies: (1) natural fallow (regrowth vegetation) -NF; (2) NF vegetation improved with leguminous trees (Sclerolobium paniculatum Vogel and Inga edulis Mart.) -IF; and (3) NF vegetation improved with leguminous trees plus phosphorus fertilization -IF +P . We quantified above-and belowground biomass and N, P, K, Ca, and Mg stocks after 23 months of fallow. The IF +P increased aboveground (leaf + branch + stem + liana) biomass and N, P, Ca, and Mg stocks, compared to NF. Similarly, total (aboveground + belowground) biomass and N and P stocks were higher for IF +P than for NF. The differences in aboveground biomass between NF and improved fallow managements were attributed exclusively to the contribution of the tree species enriching fallow vegetation. Phosphorus application increased the aboveground biomass accumulation of the species for fallow improvement. Improving the fallow vegetation with P-fertilized, fast-growing, N-fixing species represents an efficient management strategy to accelerate the reestablishment of biomass and nutrient stocks in slash-and-mulch systems in Amazonia.

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Section: Discussionsupporting

confidence: 88%

Phosphorus Fertilization Increases Biomass and Nutrient Accumulation Under Improved Fallow Management in a Slash-and-Mulch System in Eastern Amazonia, Brazil

Rangel‐Vasconcelos

Kato

Vasconcelos

et al. 2017

Rev. Bras. Ciênc. Solo

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“…McGrath et al (2001) showed that there is no significant difference in organic C concentration between a primary forest area and six-year agroforestry systems. In the same way, Tapia-Coral et al (2005) found higher C concentrations in a managed forest as compared to a primary forest. This is directly related to more intense aggregation of these soils on the surface, while the higher contents of the FLF (labile) are directly related to the action of roots and leaves deposited on the surface, promoting mechanical protection of organic matter.…”

Section: Importance Of Tropical Soil Management On the Carbon Containmentioning

confidence: 53%

Distribution of Organic Carbon in Different Soil Fractions in Ecosystems of Central Amazonia

Marques

Luizão

Teixeira

et al. 2015

Rev. Bras. Ciênc. Solo

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Organic matter plays an important role in many soil properties, and for that reason it is necessary to identify management systems which maintain or increase its concentrations. The aim of the present study was to determine the quality and quantity of organic C in different compartments of the soil fraction in different Amazonian ecosystems. The soil organic matter (FSOM) was fractionated and soil C stocks were estimated in primary forest (PF), pasture (P), secondary succession (SS) and an agroforestry system (AFS).

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“…Many studies have revealed the advantages of AFS for improving and maintaining the mineral richness of soils (Beer et al 1998;Barrios and Cobo 2004;Isaac et al 2005;Tapia Coral et al 2005). The soil organic matter values mentioned by Duguna et al (2001) in mature cocoa plantations set up in forest areas in central and southern Cameroon are around 4.1-4.7%.…”

Section: Discussionmentioning

confidence: 99%

Long-term dynamics of cocoa agroforests: a case study in central Cameroon

2011

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The sustainability of cocoa growing systems in the humid tropics is debatable. Socio-economic and technical data were obtained from 1,171 cocoa farmers and 1,638 cocoa plantations to assess the long-term dynamics of cocoa agroforests in central Cameroon since the beginning of the twentieth century. On-site, we estimated the age of the cocoa trees and measured their density in a sub-sample of 402 cocoa plantations. We inventoried associated woody species in 45 cocoa plantations from this sub-sample. Our results revealed a high Shannon index for the cocoa plantations (2.6) and showed that an average of 25 tree species per cocoa plantation had been planted with the cocoa trees at a density of 120 trees ha−1. Surveys indicated that there had been no mineral fertilization. Nearly 70% of the cocoa agroforests were over 40 years old, and all farmers continuously regenerated their cocoa tree stands. Irrespective of the cocoa plantation age, the cocoa tree density remained over 1,000 plants ha−1, and fermented dried cocoa yields were 255 kg ha−1 on average. Cocoa agroforests occupied 60% of the cultivated area on farms and cocoa sales accounted for 75% of total farm income. Almost a third of the farmers were from the area and under 40 years old. In conclusion, our results show that the farmers’ agroforestry practices, in addition to the fact that the cocoa tree stands were continuously regenerated and passed down between generations of farmers, could explain the long-term dynamics of cocoa agroforests in central Cameroon

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Carbon and nutrient stocks in the litter layer of agroforestry systems in central Amazonia, Brazil

Cited by 35 publications

References 6 publications

Phosphorus Fertilization Increases Biomass and Nutrient Accumulation Under Improved Fallow Management in a Slash-and-Mulch System in Eastern Amazonia, Brazil

Phosphorus Fertilization Increases Biomass and Nutrient Accumulation Under Improved Fallow Management in a Slash-and-Mulch System in Eastern Amazonia, Brazil

Distribution of Organic Carbon in Different Soil Fractions in Ecosystems of Central Amazonia

Long-term dynamics of cocoa agroforests: a case study in central Cameroon

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