Impact of changes in land use, species and elevation on soil organic carbon and total nitrogen in Ethiopian Central Highlands

Tesfaye, Mehari A.; Bravo, Felipe; Ruíz-Peinado, Ricardo; Pando, Valentín; Bravo‐Oviedo, Andrés

doi:10.1016/j.geoderma.2015.06.022

Cited by 130 publications

(84 citation statements)

References 40 publications

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“…The main improvement in soil carbon sequestration and soil fertility (Jandl et al, 2007) associated with afforestation results from increased litterfall and rhizodeposition inputs, improved soil protection due to the soil cover, greater nutrient availability and increased water-retention capacity (e.g., Fernández-Ondoño et al, 2010;Tesfaye et al, 2016). The amounts of soil carbon sequestered will depend on the species used (e.g., Pérez-Cruzado et al, 2012;Vesterdal et al, 2013;Gómez de la Bárcena et al, 2014).…”

Section: Afforestationmentioning

confidence: 99%

Forest management and carbon sequestration in the Mediterranean region: A review

et al. 2017

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Aim of study: TTo review and acknowledge the value of carbon sequestration by forest management in the Mediterranean area. Material and methods:We review the main effects of forest management by comparing the effects of silvicultural systems (even-aged vs. uneven-aged stands, coppice systems, agroforestry systems), silvicultural options (thinning, rotation period, species composition), afforestation, harvesting, fire impact or effects of shrub layer on carbon sequestration in the Mediterranean area.Main results: We illustrate as forest management can clearly improve forest carbon sequestration amounts. We conclude that forest management is an effective way to maintain and enhance high carbon sequestration rates in order to cope with climate change and provision of ecosystem services. We also think that although much effort has been put into this topic research, there are still certain gaps that must be dealt with to increase our scientific knowledge and in turn transfer this knowledge to forest practitioners in order to achieve sustainable management aimed at mitigating climate change.Research highlights: It is important to underline the importance of forests in the carbon cycle as this role can be enhanced by forest managers through sustainable forest management. The effects of different management options or disturbances can be critical as regards mitigating climate change. Understanding the effects of forest management is even more important in the Mediterranean area, given that the current high climatic variability together with historical human exploitation and disturbance events make this area more vulnerable to the effects of climate change.Additional keywords: global carbon cycle; forest sink; forest mitigation strategies; carbon sequestration potential; climate change mitigation; Mediterranean forests.

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Section: Afforestationmentioning

confidence: 99%

Forest management and carbon sequestration in the Mediterranean region: A review

et al. 2017

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“…Given the critical role of soils in overall carbon storage, conservation measures -including fire prevention and control-must be developed and implemented to conserve carbon pools in soil. Land reclamation via forest plantation on degraded land is another important carbon pool enhancement measure; plantations on formerly eroded soils can store up to 77% more carbon (Tesfaye et al, 2016). Forest harvesting operations commonly result in short-term carbon losses from the soil (Turner and Lambert, 2000).…”

Section: Soil Conservationmentioning

confidence: 99%

Forest Carbon Sequestration: The Impact of Forest Management

Bravo

Rı́o

Bravo‐Oviedo

et al. 2017

Managing Forest Ecosystems: The Challenge of Climate Change

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“…Typically, it is impossible to find detailed field inventory data at a larger scale. For our study, only few empirical mineral soil data were available from local inventories, including data collected in one of our previous studies [5,9,[55][56][57][58][59][60][61]. From these published results, we derived mean soil carbon and nitrogen by land use type and a correction factor for soil carbon and nitrogen from a preparatory spin-up simulation to obtain spatially explicit soil carbon and nitrogen stocks across the study area as a starting condition for the reforestation simulations.…”

Section: Initial Soil Conditionsmentioning

confidence: 99%

The Carbon Sequestration Potential of Degraded Agricultural Land in the Amhara Region of Ethiopia

Belay

Pötzelsberger

Hasenauer

2018

Forests

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Forests are a key player within the global carbon cycle and reforestation is an important climate change mitigation mechanism. In this study, we identify potentially suitable areas for reforestation to assess the carbon sequestration potential in the highly deforested and degraded Amhara region of Ethiopia. We apply biogeochemical mechanistic ecosystem modelling to predict the amount of carbon that can be potentially sequestered within different time horizons. Since human intervention plays a key role within the Amhara region, three different forest management scenarios and five different rotation periods following reforestation are tested: (i) unthinned; (ii) removal of 5% of the stem carbon every 20 years (thinning 1); and (iii) removal of 10% stem carbon every 20 years (thinning 2), as well as a rotation period of 10, 30, 50, 100, and 150 years. Sustainable management of reforested land is addressed by implementing the so called 'Normal-forest' system (equal representation of every age class). This ensures the long term sequestration effect of reforested areas. The study shows that 3.4 Mha (Mha = Million hectare) of land, including bare land (0.7 Mha), grass land (1.2 Mha), and shrub land (1.5 Mha) can be considered as ecologically potentially suitable for reforestation. Assuming a 100 year rotation period in a 'Normal-forest' system, this shows that a total net carbon sequestration potential of 177 Tg C (10.8 Tg C in the soil and 165.9 Tg C aboveground; Teragram = 10 12 g) is possible, if all 3.4 Mha are replanted. The highest total net carbon sequestration (soil and aboveground) was evident for the Highland-wet agro-ecological zone, whereas the lowest values are typically in the Midland-dry zone. The highest net aboveground carbon sequestration was predicted for reforestations on current grass land and shrub land versus bare land, whereas the highest net soil carbon sequestration was predicted on current bare land, followed by grass land and shrub land.

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Impact of changes in land use, species and elevation on soil organic carbon and total nitrogen in Ethiopian Central Highlands

Cited by 130 publications

References 40 publications

Forest management and carbon sequestration in the Mediterranean region: A review

Forest management and carbon sequestration in the Mediterranean region: A review

Forest Carbon Sequestration: The Impact of Forest Management

The Carbon Sequestration Potential of Degraded Agricultural Land in the Amhara Region of Ethiopia

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