Relationships between on-farm tree stocks and soil organic carbon along an altitudinal gradient, Mount Kilimanjaro, Tanzania

Mpanda, Mathew; Majule, Amos; Sinclair, F.L.; Marchant, Robert

doi:10.1080/14728028.2016.1202790

Cited by 18 publications

(14 citation statements)

References 37 publications

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“…Contrary to this present study, Zhang et al [ 84 ] found that plant biomass, woody plant density and tree height did not emerge as significant predictor variables for soil organic carbon in the subalpine coniferous forest in Southwest China. Mathew et al [ 85 ] also found a poor correlation between soil organic carbon stock and above ground carbon in Mount Kilimanjaro, Tanzania. The inconsistency between these studies shows that environmental factors affecting the distributions of vegetation and soil carbon stocks are site-specific.…”

Section: Discussionmentioning

confidence: 99%

The effects of land cover change on carbon stock dynamics in a dry Afromontane forest in northern Ethiopia

Solomon

Pabi

Annang

et al. 2018

Carbon Balance Manage

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BackgroundForests play an important role in mitigating global climate change by capturing and sequestering atmospheric carbon. Quantitative estimation of the temporal and spatial pattern of carbon storage in forest ecosystems is critical for formulating forest management policies to combat climate change. This study explored the effects of land cover change on carbon stock dynamics in the Wujig Mahgo Waren forest, a dry Afromontane forest that covers an area of 17,000 ha in northern Ethiopia.ResultsThe total carbon stocks of the Wujig Mahgo Waren forest ecosystems estimated using a multi-disciplinary approach that combined remote sensing with a ground survey were 1951, 1999, and 1955 GgC in 1985, 2000 and 2016 years respectively. The mean carbon stocks in the dense forests, open forests, grasslands, cultivated lands and bare lands were estimated at 181.78 ± 27.06, 104.83 ± 12.35, 108.77 ± 6.77, 76.54 ± 7.84 and 83.11 ± 8.53 MgC ha−1 respectively. The aboveground vegetation parameters (tree density, DBH and height) explain 59% of the variance in soil organic carbon.ConclusionsThe obtained estimates of mean carbon stocks in ecosystems representing the major land cover types are of importance in the development of forest management plan aimed at enhancing mitigation potential of dry Afromontane forests in northern Ethiopia.Electronic supplementary materialThe online version of this article (10.1186/s13021-018-0103-7) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

The effects of land cover change on carbon stock dynamics in a dry Afromontane forest in northern Ethiopia

Solomon

Pabi

Annang

et al. 2018

Carbon Balance Manage

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“…This can be attributed to the removal of aboveground biomass due to grazing, logging, firewood collection, and deterioration of soil physical parameters. The changes in SOC and TN vary across disturbance regime, soil layers, and locations due to climatic, edaphic, biological, land management practices, vegetation cover, aspect, and topography (Moraes et al 1995;Batjes 1996;Lemenih and Itanna 2004;Vágen et al 2005;Yimer et al 2006;Jiménez et al 2007;Navarrete and Tsutsuki 2008;Shrestha and Singh 2008;Sakai et al 2010;Demessie et al 2011;Gamfeldt et al 2013;Peng et al 2013;Beniston et al 2014;Habtemicael et al 2014;Yimer et al 2015;Mathew et al 2016;Gurmessa et al 2016;Birhane et al 2017), and such changes affect the overall productivity of the ecosystems (Chen et al 2015). Understanding and incorporating such heterogeneity and spatial distribution characteristics can improve the precision of carbon-nitrogen budgets and assist in effective intervention measures toward vegetation recovery.…”

Section: Introductionmentioning

confidence: 99%

“…Most of this stored carbon is lost through degradation resulting in huge amounts of carbon released to the atmosphere (Eswaran et al 1993;Lal 2004). Different studies have shown that as soil depth increase, SOC and TN accumulation decrease for all land use because of the decrease in the effects of aboveground biomass accumulation and subsequent decomposition processes especially for forest and grasslands (Yimer et al 2006;Shrestha and Singh 2008;Sakai et al 2010;Demessie et al 2011;Gamfeldt et al 2013;Habtemicael et al 2014;Yimer et al 2015;Mathew et al 2016;Gurmessa et al 2016;Liu et al 2016). Similarly, findings (Yimer et al 2006;Gelaw et al 2014) have shown that the SOC did not differ significantly after a depth of 30 cm indicating stability between all land uses due to the low level of addition of biomass to lower depths.…”

Section: Introductionmentioning

confidence: 99%

The extent of soil organic carbon and total nitrogen in forest fragments of the central highlands of Ethiopia

Tolessa

Senbeta

2018

j ecology environ

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Background: Deforestation and degradation are currently affecting the ecosystem services of forests. Among the ecosystem services affected by deforestation and degradation are the amount of soil organic carbon (SOC) and total nitrogen (TN) stored in forest soils which have greater impacts in global climate change. This study aimed at examining the amount of SOC and TN in the forest fragments which were separated from the continuous tracts of forests of Jibat and Chillimo through fragmentation processes over four decades. Methods: We have sampled soils from 15 forest fragments of Chillimo and Jibat in the central highlands of Ethiopia. The soil samples obtained in two separate soil depths (0-30 and 30-60 cm) were bulked, dried, and sieved for analysis. Results: Our results have shown that the two sites (Jibat and Chillimo forest fragments) differed in their SOC and TN contents. While the values for Jibat were found to be 29.89 Mg/ha of SOC and 2.84 Mg/ha for TN, it was 14. 06 Mg/ha of SOC and 1.40 Mg/ha for TN for Chillimo. When all forest fragment soil samples were bulked together, Jibat site had twice the value of SOC and TN than Chillimo. When disaggregated on the basis of each fragments, there existed differences in SOC (1.86 Mg/ha and 42.15 Mg/ha) and TN (0.24 Mg/ha and 4.23 Mg/ha) values. Among the forest fragments, fragment four (F 4) had the highest Relative Soil Improvement Index (RSII) value of 3826.82% and fragment fifteen (F 15) had the lowest RSII value (726.87%) which indicated that the former had a better quality of soil properties than the latter. Conclusion: SOC and TN differed across sampled fragments and sites. Variations in soil properties are the reflections of inherent soil parent material, aboveground vegetation, human interferences, and other physical factors. Such differences could be very important for identifying intervention measures for restoration and enhancing ecosystem services of those fragments.

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“…Ndiaye et al (2012) reported a positive impact on crop productivity when soil carbon has improved through the practice of agroforestry. Most of the studies related to the impact of trees in improving soil carbon in agroforestry parklands in the Sahel region focused on one tree species and on one site (Traore et al, 2004) while the positive effect of tree on soil fertility depends on several factors such as tree species, climate, soil characteristics, altitude and land use (Lorenz et al, 2014;Mathayo et al, 2016;Sileshi, 2016;Bayala et al, 2019). Furthermore, the magnitude of the impact of tree species on soil organic carbon improvement according to a rainfall gradient is not well documented according to our literature review (Lorenz et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Assessing tree effect on total soil carbon in agroforestry parklands systems along a rainfall gradient in Burkina Faso (West Africa)

Coulibaly¹,

Bayala²,

Gaiser³

et al. 2021

Int. J. Bio. Chem. Sci

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Trees contribution in improving soil carbon is well established, but few works addressed how this was affected by a climatic gradient. This research investigated effects of Vitellaria paradoxa C. F Gaertn and Parkia biglobosa (Jacq.) Benth on total soil carbon in parklands along a rainfall gradient for recommendations of tree species which better improve soil carbon under specific climatic conditions for parklands adaptation to climate change. Total soil carbon at topsoil and subsoil layers measured using spectrophotometry infrared method, was higher when rainfall increased and were respectively (1.598 ± 0.040; 1.033 ± 0.022; 0.834 ± 0.014; 0.857 ± 0.016%). It was higher at topsoil (0.529 ± 0.015%) and subsoil (0.282 ± 0.019%) under V. paradoxa when rainfall decreased while it was higher under P. biglobosa and V. paradoxa when rainfall increased slightly. Its improvement was higher under V. paradoxa and P. biglobosa when rainfall respectively decreased and increased. A decrease trend of total soil carbon under both tree species from trunk to outside the canopy whatever rainfall levels and soil layers was observed. Tree species choice could play an important role in improving total soil carbon and crop productivity according to rainfall level for parklands adaptation to climate change.

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Relationships between on-farm tree stocks and soil organic carbon along an altitudinal gradient, Mount Kilimanjaro, Tanzania

Abstract: World agroforestry Centre (iCraF), dar es salaam, tanzania; b institute of resource assessment, University of dar es salaam, dar es salaam, tanzania; c World agroforestry Centre (iCraF),

Cited by 18 publications

References 37 publications

The effects of land cover change on carbon stock dynamics in a dry Afromontane forest in northern Ethiopia

The effects of land cover change on carbon stock dynamics in a dry Afromontane forest in northern Ethiopia

The extent of soil organic carbon and total nitrogen in forest fragments of the central highlands of Ethiopia

Assessing tree effect on total soil carbon in agroforestry parklands systems along a rainfall gradient in Burkina Faso (West Africa)

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