Abstract
Soil degradation in sub-Saharan Africa necessitates accurate soil carbon quantification using a locally applicable method. We assessed the reliability of the original Walkley-Black method for analyzing soil organic carbon (SOC) in semi-arid soils in northern Ethiopia characterized by low SOC (1.3 ± 0.09%) and lack of carbonates. Eighty samples from entire soil profiles were collected in four prevalent land use systems along an elevation gradient and analyzed using the Walkley-Black method and CN elemental analyzer. The results were compared by linear regression analysis followed by the Bland and Altman analysis, eliminating the possible bias of regression. The analyses demonstrated the universal applicability of the Walkley-Black method using the standard correction factor (1.32) for SOC evaluation in carbon-poor, non-calcareous soils.
| Original language | English |
|---|---|
| Pages (from-to) | 98-101 |
| Number of pages | 4 |
| Journal | Journal of Arid Environments |
| Volume | 153 |
| DOIs | |
| Publication status | Published - 2018 Jun 1 |
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Keywords
- Bland and Altman analysis
- CN analyzer
- Leptosol
- Soil organic carbon (SOC)
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Ecology
- Earth-Surface Processes
Cite this
How reliable is the Walkley-Black method for analyzing carbon-poor, semi-arid soils in Ethiopia? / Gessesse, Tigist Araya; Khamzina, Asia.
In: Journal of Arid Environments, Vol. 153, 01.06.2018, p. 98-101.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - How reliable is the Walkley-Black method for analyzing carbon-poor, semi-arid soils in Ethiopia?
AU - Gessesse, Tigist Araya
AU - Khamzina, Asia
PY - 2018/6/1
Y1 - 2018/6/1
N2 - Soil degradation in sub-Saharan Africa necessitates accurate soil carbon quantification using a locally applicable method. We assessed the reliability of the original Walkley-Black method for analyzing soil organic carbon (SOC) in semi-arid soils in northern Ethiopia characterized by low SOC (1.3 ± 0.09%) and lack of carbonates. Eighty samples from entire soil profiles were collected in four prevalent land use systems along an elevation gradient and analyzed using the Walkley-Black method and CN elemental analyzer. The results were compared by linear regression analysis followed by the Bland and Altman analysis, eliminating the possible bias of regression. The analyses demonstrated the universal applicability of the Walkley-Black method using the standard correction factor (1.32) for SOC evaluation in carbon-poor, non-calcareous soils.
AB - Soil degradation in sub-Saharan Africa necessitates accurate soil carbon quantification using a locally applicable method. We assessed the reliability of the original Walkley-Black method for analyzing soil organic carbon (SOC) in semi-arid soils in northern Ethiopia characterized by low SOC (1.3 ± 0.09%) and lack of carbonates. Eighty samples from entire soil profiles were collected in four prevalent land use systems along an elevation gradient and analyzed using the Walkley-Black method and CN elemental analyzer. The results were compared by linear regression analysis followed by the Bland and Altman analysis, eliminating the possible bias of regression. The analyses demonstrated the universal applicability of the Walkley-Black method using the standard correction factor (1.32) for SOC evaluation in carbon-poor, non-calcareous soils.
KW - Bland and Altman analysis
KW - CN analyzer
KW - Leptosol
KW - Soil organic carbon (SOC)
UR - http://www.scopus.com/inward/record.url?scp=85041635373&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041635373&partnerID=8YFLogxK
U2 - 10.1016/j.jaridenv.2018.01.008
DO - 10.1016/j.jaridenv.2018.01.008
M3 - Article
AN - SCOPUS:85041635373
VL - 153
SP - 98
EP - 101
JO - Journal of Arid Environments
JF - Journal of Arid Environments
SN - 0140-1963
ER -