Spatial structures of soil organic carbon in tropical forests—A case study of Southeastern Tanzania

Rossi, Joni; Govaerts, Annelies; Vos, Bruno De; Verbist, Bruno; Vervoort, André; Poesen, Jean; Muys, Bart; Deckers, Jozef

doi:10.1016/j.catena.2008.12.003

Cited by 64 publications

(39 citation statements)

References 36 publications

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“…These results are in agreement with the results of Rossi et al (2009), Qing-Biao et al (2009 and Hopmans and Elms (2009), who concluded that with increasing soil depth, bulk density and pH increased, while the amount of N %, organic matter and OC decreased. Previous studies also have revealed that there is an inverse relationship between soil carbon sequestration and soil depth in arid and semi-arid regions (Rice 2000).…”

Section: Resultssupporting

confidence: 92%

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Sadeghi

Raeini

2015

Int. J. Environ. Sci. Technol.

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Artemisia spp. is widespread Iranian rangelands, covering more than 50 % of land cover. The present study was conducted to estimate the amount of carbon sequestration in soil containing Artemisia aucheri at different soil depths (0-15 and 15-30 cm), as well as its organs (root, shoot and leaves) and some soil chemical and physical characteristics in the SalehAbad region, 41 km north of HajiAbad, Hormozgan, Iran. The results showed that soil with 0-15 cm depth had higher soil pH and moisture percentage, as well as lower nitrogen percentage and organic carbon percentage than soil at deeper depths. Soil samples from 0 to 15 cm depth had higher clay percentage. Multiple regression showed that nitrogen percentage and moisture percentage were the most effective traits contributing to carbon sequestration. Root and leaf plant tissues had higher and lower stored organic carbon, respectively. Overall, the results of this study indicated that the highest carbon sequestration was obtained at a soil depth of 0-15 cm and in the roots of A. aucheri in the SalehAbad region. Therefore, by recognizing the species that have more potential for carbon sequestration, as well as more resistance to environmental limits such as salinity and drought, and also to investigate the management factors affecting the sequestration process, regeneration and rehabilitation of rangeland can be followed in terms of carbon sequestration.

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Section: Resultssupporting

confidence: 92%

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Sadeghi

Raeini

2015

Int. J. Environ. Sci. Technol.

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“…The difference of soil pH, SP, MC, and OC% between two different soil depths for G. decander and N% for Z. atriplicoides was higher compared with the other plant. These results are in agreement with the results of Rossi et al , Qing‐Biao et al , and Hopmans and Elms who concluded that with increasing soil depth, the bulk density, and pH increased while the amount of N%, OM, and OC decreased. The soil sample related to Z. atriplicoides consisted of more clay and silt while the sand% was higher in G. decander soil samples.…”

Section: Discussionsupporting

confidence: 93%

Estimation and Comparison of Carbon Sequestration byZygophyllum atriplicoidesandGymnocarpus decander

Sadeghi

Raeini

2015

CLEAN Soil Air Water

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Estimation and Comparison of Carbon Sequestration by Zygophyllum atriplicoides and Gymnocarpus decanderThis study was conducted to evaluate the effect of plant organs (root, stem, and leaf) of two plants, Zygophyllum atriplicoides and Gymnocarpus decander, on carbon sequestration and some soil characteristics in the Saleh-Abad region, 41 km north of Haji-Abad, Bandar-Abbas, in 2012. This study was carried out by two separate factorial experiments. The first factor was the type of plant species in both experiments. The second factor was the plant organs in experiment I and different soil depths in experiment II. The results showed that the soil with Z. atriplicoides had a higher soil saturation percentage, moisture percentage, nitrogen percentage, and organic carbon percentage; the soil with G. decander had a higher electrical conductivity. Soil at 0-15 cm depth had a higher electrical conductivity, nitrogen percentage and organic carbon, as well as a lower moisture percentage, compared with 15-30 cm depth, which was similar for both plants. Soil with Z. atriplicoides and at a 0-15 cm depth had higher clay and silt percentages, and a lower sand percentage. Multiple regression showed that nitrogen and moisture percentage were the most effective traits contributing to carbon sequestration. Furthermore, Z. atriplicoides, compared to G. decander, had the higher stored organic carbon level in tissues; stems and leaves had higher and lower levels of stored organic carbon, respectively, in both plants. Overall, the results of this study indicated that the highest carbon sequestration was obtained in soils with Z. atriplicoides at 0-15 cm depth.

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“…The question of the sustainability of cashew nut production also remains unresolved. Of concern are the sensitivity of the soils of the Makonde plateau for acidification, particularly due to the use of sulfur which is applied as a fungicide in cashew groves (Ngatunga et al, 2001;Ngatunga, Dondeyne, and Deckers, 2003) and organic carbon losses (Rossi et al, 2009), as well as their sensitivity to the formation of erosion gullies (Achten et al, 2008). The latter is very much a function of the effect of cashew groves on the local hydrology, a matter still being studied.…”

Section: Discussionmentioning

confidence: 99%

More people, more trees in South Eastern Tanzania: local and global drivers of land-use/cover changes

Kabanza

Dondeyne

Tenga

et al. 2013

African Geographical Review

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Land degradation in South Eastern Tanzania, the country's major cashew producing area, has been attributed to deforestation. By comparing land-use/cover maps derived from aerial photographs of 1965 with maps derived from satellite images of 2002, we assessed how land-use changed in six villages, and relate these to local and global drivers. Land-use/cover changes are complex processes, which we analyzed by determining the relative net changes, losses, persistence and gains of each land-use/cover categories. Widespread planting of cashew trees only started in the 1960s; while the 'villagisation' program in the 1970s, altered settlement patterns as centrally planned villages were created. Population growth and rural development policies were major local drivers for land-use/cover change; international trade and technological innovations were principal global drivers. Though population increase led to a reduction of natural vegetation, the spread of cashew trees resulted in a case of 'more people, more trees.' How far the ensuing deforestation affected the biodiversity of the area and how sustainable the production of cashew nuts actually is, remains yet unresolved questions.

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Spatial structures of soil organic carbon in tropical forests—A case study of Southeastern Tanzania

Cited by 64 publications

References 36 publications

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Capability investigation of carbon sequestration in Artemisia aucheri Bioss

Estimation and Comparison of Carbon Sequestration byZygophyllum atriplicoidesandGymnocarpus decander

More people, more trees in South Eastern Tanzania: local and global drivers of land-use/cover changes

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