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Table A1 Soil organic carbon distribution and methods of SOC determination in different land uses in Ethiopia

From: Advances in quantifying soil organic carbon under different land uses in Ethiopia: a review and synthesis

Referred journal Research focus Methods of SOC determination Soil depth Land use type Reported SOC pool
Yimer et al. 2006 SOC and TN stocks as affected by topographic aspect and vegetation. Walkely and Black wet oxidation method 0-30 and 30-60cm Cropland, grazing land and forestland SOC stock (kg m−2)
Yimer et al. 2007 Changes in SOC and TN
Contents in 3 adjacent land use types
Walkely and Black wet oxidation method 0-20, 20-40, 40-100cm Cropland, grazing land and forestland SOC concentration (%)
Gelaw et al. 2013 Organic C and N associated with Aggregates and particle sizes under different land uses CN analyser by dry combustion method 0-10 and 10-20 cm Rainfed crop production agroforest, open communal pasture, silvopasture, and irrigation based fruit production SOC concentration (g/kg)
Gelaw et al. 2014 SOC and TN stocks in different
Different land uses
CN analyser by dry combustion method 0-15, 15-30 and 30-50 cm Rainfed crop production agroforest, open communal pasture, silvopasture, and irrigation based fruit production SOC concentration (g/kg) and stock (Mg/ha)
Gelaw et al. 2015a Land use impact on SOC TN storage CN analyser by dry combustion method 0-15, 15-30 and 30-50 cm Rainfed crop production agroforest, open communal pasture, silvopasture, and irrigation based fruit production SOC concentration (g/kg) and stock (Mg/ha)
Gelaw et al. 2015b Soil quality indices CN analyser by dry combustion method 0-15 cm Rainfed crop production agroforest, open communal pasture, silvopasture, and irrigation based fruit production SOC concentration (%)
Berihu et al. 2017 SOC and TN losses following deforestation Walkely and Black wet oxidation method 0-20 and 20-40 cm Dense forest, open forest, grazing and farm land SOC concentration (%) and Soil C sequestered (t/ha)
Corral-Nunez et al. 2014 Current and predicted trend of SOM Walkely and Black wet oxidation method 0-30 cm Farm land and exclosures SOC concentration (%)
Kassa et al. 2017 Impact of deforestation on soil ferility, soil C and nitrogen stock Walkely and Black wet oxidation method 0-20, 20-40, 40-60 and 60-80 cm Forest, cropland and Agroforestry SOC concentration (%) and stock (Mg/ha)
Lemma et al. 2006 Soil carbon sequetration under Different exotic tree species Isotope ratio mass spectrophotometer 0-5. 5-10, 10-20, 20-30 and 30-50 cm Native forest, farm land and plantation SOC concentration (g/kg) and stock (Mg/ha)
Lemenih et al. 2005 Changes in SOC and TN following reforestation of previously cultivated land LECO-1000 CHN Analyzer 0-10, 10-20, 20-40, 40-60 and 60-80 cm Continuos cultivation, natural forest and plantation SOC concentration (g/kg) and stock (g m-2)
Yosef 2012 Carbon stock potentials of woodlands Walkely and Black wet oxidation method 0-30 cm Boswellia papyrifera woodland and farmland SOC stock (Mg/ha)
Bazezew et al. 2015 Above-and below-ground C in a Community forest Walkely and Black wet oxidation method 0-10, 10-20 and 20-30 cm Afromontane forest SOC concentration (%) and stock (t/ha)
Itanna et al. 2011 Effect of land use change and soil type on SOC status CN analyser by dry combustion method Profile pits with varying depths ranging from 0- 140, 150, 160, 177 cm Agroforestry and farmland SOC concentration (g/kg) and stock (Mg/ha)
Cardelús et al. 2013a Assessment of Ethiopian sacred grove Elemental analyser coupled to Isotope ratio mass spectrophotometer 0-10 cm Church forest SOC concentration (%)
Abera and Belachew 2011 Effect of land use on SOC and TN Walkely and Black wet oxidation method 0-5, 5-15, 15-30 and 30-60 cm Fallow, cultivated, natural forest and grassland SOC concentration (%)
Kim et al. 2015 Impact of land use change on SOC and TN stocks Walkely and Black wet oxidation method 0-10, 10-20, 20-40, 40-70, 70-100 cm Home garden and converted mono-crop field SOC concentration (%) and stock (Mg/ha)
Demessie et al. 2012 Effects of eucalyptus and coniferous plantations on soil properties Walkely and Black wet oxidation method 0-10, 10-20, 20-40, and 40-60 cm Eucalyptus and coniferous plantations SOC concentration (%)
Singh et al. 2010 SOC concentration and stock under different land uses Walkely and Black wet oxidation method 0-10, 10-20, 20-40, 40-60, and 60-100 cm Agroforestry and cropland SOC concentration (%) and stock (Mg/ha)
Shiferaw et al. 2015 SOC to mitigate land degradation and climate change Walkely and Black wet oxidation method 0-30 cm Cropland, grassland and forestland SOC concentration (g/kg)
Michelsen et al. 2004 SOC stocks in different ecosystems Shimadzu TOC analyser 0-30, 30-55 and 55-100 cm Dry deciduous forest, dry woodland and different types of wooded grassland SOC concentration (%) and stock (Mg/ha)
Gebremariam and Kebede 2010 Effect of land use chnage on SOC, above-grounf biomass and aggregarte stability Walkely and Black wet oxidation method 0-15, and 15-30 cm Farmland, forest land and uncontrolled grazing land SOC concentration (%) and stock (t/ha)
Tura and Eshetu 2013 C stock in Church forests Walkely and Black wet oxidation method 0-30 cm church forest SOC concentration (%) and stock (Mg/ha)
Assefa et al. 2017 Effect of land use and deforestation on SOC and TN CN Elemental analyser 0-10, 10-20, 20-30 and 30-50 cm Forest, Eucalyptus, grazing and cropland SOC concentration (%) and stock (kg m-2)
Haile et al. 2014 Impact of land use change on SOC and TN Walkely and Black wet oxidation method 0-15, 15-30, and 30-45 cm Cropland, grazing land and Eucalyptus camaldulensis woodlot SOC concentration (%) and stock (Mg/ha)
Girmay and Singh 2012 Effect of land use change on SOC and soil quality Walkely and Black wet oxidation method 0-20, 20-40, 40-60 and 60-80 cm Cultivated land, grazing land and area exclosure SOC concentration (%) and stock (Mg/ha)
Haileslassie et al. 2006 Assessment of soil nutrient depletion on smallholder mixed farming system Walkely and Black wet oxidation method 0-30 cm Enset-based farming and teff-based farming SOC concentration (%)
Vagen et al. 2013 Mapping land degradation and soil properties using Landsat approaches DC-IRS 0-20, and 20-50 cm Cropland and shrub land SOC concentration (g/kg)
Mohammed and Beleke, 2014 Changes in C stock and sequestration potential under native forest and Walkely and Black wet oxidation method adjacent land uses 0-30 cm Native forest, annual crop field and coffee based agroforestry SOC stock (Mg/ha)
Solomon et al. 2002b SOM composition as influenced by deforestation and agricultural management CN analyser by DC method 0-10 cm Forest and cropland SOC concentration (g/kg) and stock (Mg/ha)
Negash and Starr 2015 Soil carbon stocks of indigenous agroforestry systems LOI; ignition at 550oC for 2h 0-30, and 30-60 cm Agroforestry systems (Enset, Enste-Coffee and Fruit-Coffee) Soil C stock (Mg/ha)
Amare et al. 2013 Predicting SOC using soil spectroscopy for Ethiopian highlands Walkely and Black wet oxidation method and Reflectance spectrometer Not specified Cropland, grassland, forest land SOC concentration (%)
Belay et al. 2018 C dynamics of dry tropical Afromontane forest ecosystems LOI; ignition at 550oC for 2h 0-10, 10-20, 20-30, and 30-50 cm Church forest, Community forest and agricultural land Soil C stock (t/ha)
Negasa et al. 2017 Variations in soil properties under different Smallholder farmers along a toposequence Walkely and Black wet oxidation method 0-20, 20-40, 40-60 and 60-100 cm Agroforestry, cultivated land, and grazing land SOC concentration (%)
Welemariam et al. 2018 SOC and MBC distribution under various land uses and management practices Walkely and Black wet oxidation method 0-15, and 15-30 cm Terraced grazing land, exclosure with terrace, , exclosure alone, and non-conserved open and communal grazing land SOC concentration (%) and Soil C stock (Mg/ha)
  1. C Carbon, SOC Soil organic carbon, SOM Soil organic matter, TN Total nitrogen, TOC Total organic carbon, DC-IRS Dry combustion and Infra-Red spectroscopy, LOI Loss of Ignition, MBC Microbial biomass carbon