Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential
Cropland soils are considered to have the potential to sequester atmospheric CO2 through agronomic best management practices (BMPs). To estimate this potential in East Africa, the authors reviewed 69 published studies from Ethiopia, Kenya, Rwanda, Tanzania, Uganda, and Burundi assessing the effect o...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Informa UK Limited
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/107386 |
| _version_ | 1855516982696214528 |
|---|---|
| author | Namirembe, Sara Piikki, Kristin Sommer, Rolf Söderström, Mats Tessema, Bezaye Dr. Nyawira, Sylvia Sarah |
| author_browse | Namirembe, Sara Nyawira, Sylvia Sarah Piikki, Kristin Sommer, Rolf Söderström, Mats Tessema, Bezaye Dr. |
| author_facet | Namirembe, Sara Piikki, Kristin Sommer, Rolf Söderström, Mats Tessema, Bezaye Dr. Nyawira, Sylvia Sarah |
| author_sort | Namirembe, Sara |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cropland soils are considered to have the potential to sequester atmospheric CO2 through agronomic best management practices (BMPs). To estimate this potential in East Africa, the authors reviewed 69 published studies from Ethiopia, Kenya, Rwanda, Tanzania, Uganda, and Burundi assessing the effect of land use conversion from native vegetation to cropland on soil organic carbon (SOC) and the extent to which carbon sequestration is feasible through BMPs. Reported losses of SOC in the top 30 cm of the soil profile in short (<10 years), medium (10–25 years), and long (>25 years) term were 6.7 ± 6.0, 13.0 ± 9.2, and 2.8 ± 1.0 t C ha–1 year–1, respectively, for forest-to-cropland; and 16.0, 2.1 ± 2.2 and 0.3 ± 0.8 t C ha–1 year–1 respectively, for woodland-to-cropland conversion. Duration to steady-state SOC was 21–38 years for forest-to-cropland conversion. Short-term SOC sequestration (t C ha–1 year–1) in the 0–30 cm layer as a result of BMPs was 19.7 ± 3.9 from crop residues, 14.8 ± 8.7 from farmyard manure, 3.5 ± 4.5 from inorganic fertilizers, 2.7 from agroforestry, and 2.5 from improved fallow. However, the studies reviewed were mostly short-term and concentrated to a few locations. Future research should address these gaps. |
| format | Journal Article |
| id | CGSpace107386 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1073862024-10-03T07:40:47Z Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential Namirembe, Sara Piikki, Kristin Sommer, Rolf Söderström, Mats Tessema, Bezaye Dr. Nyawira, Sylvia Sarah management farmland soil organic carbon gestion tierras agricolas carbono organico del suelo ecology Cropland soils are considered to have the potential to sequester atmospheric CO2 through agronomic best management practices (BMPs). To estimate this potential in East Africa, the authors reviewed 69 published studies from Ethiopia, Kenya, Rwanda, Tanzania, Uganda, and Burundi assessing the effect of land use conversion from native vegetation to cropland on soil organic carbon (SOC) and the extent to which carbon sequestration is feasible through BMPs. Reported losses of SOC in the top 30 cm of the soil profile in short (<10 years), medium (10–25 years), and long (>25 years) term were 6.7 ± 6.0, 13.0 ± 9.2, and 2.8 ± 1.0 t C ha–1 year–1, respectively, for forest-to-cropland; and 16.0, 2.1 ± 2.2 and 0.3 ± 0.8 t C ha–1 year–1 respectively, for woodland-to-cropland conversion. Duration to steady-state SOC was 21–38 years for forest-to-cropland conversion. Short-term SOC sequestration (t C ha–1 year–1) in the 0–30 cm layer as a result of BMPs was 19.7 ± 3.9 from crop residues, 14.8 ± 8.7 from farmyard manure, 3.5 ± 4.5 from inorganic fertilizers, 2.7 from agroforestry, and 2.5 from improved fallow. However, the studies reviewed were mostly short-term and concentrated to a few locations. Future research should address these gaps. 2020-01-01 2020-03-04T18:45:31Z 2020-03-04T18:45:31Z Journal Article https://hdl.handle.net/10568/107386 en Open Access Informa UK Limited Namirembe, S.; Piikki, K.; Sommer, R.; Söderström, M.; Tessema, B.; Nyawira, S.S. (2020) Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential. South African Journal of Plant and Soil 15 p. ISSN: 0257-1862 |
| spellingShingle | management farmland soil organic carbon gestion tierras agricolas carbono organico del suelo ecology Namirembe, Sara Piikki, Kristin Sommer, Rolf Söderström, Mats Tessema, Bezaye Dr. Nyawira, Sylvia Sarah Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential |
| title | Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential |
| title_full | Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential |
| title_fullStr | Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential |
| title_full_unstemmed | Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential |
| title_short | Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential |
| title_sort | soil organic carbon in agricultural systems of six countries in east africa a literature review of status and carbon sequestration potential |
| topic | management farmland soil organic carbon gestion tierras agricolas carbono organico del suelo ecology |
| url | https://hdl.handle.net/10568/107386 |
| work_keys_str_mv | AT namirembesara soilorganiccarboninagriculturalsystemsofsixcountriesineastafricaaliteraturereviewofstatusandcarbonsequestrationpotential AT piikkikristin soilorganiccarboninagriculturalsystemsofsixcountriesineastafricaaliteraturereviewofstatusandcarbonsequestrationpotential AT sommerrolf soilorganiccarboninagriculturalsystemsofsixcountriesineastafricaaliteraturereviewofstatusandcarbonsequestrationpotential AT soderstrommats soilorganiccarboninagriculturalsystemsofsixcountriesineastafricaaliteraturereviewofstatusandcarbonsequestrationpotential AT tessemabezayedr soilorganiccarboninagriculturalsystemsofsixcountriesineastafricaaliteraturereviewofstatusandcarbonsequestrationpotential AT nyawirasylviasarah soilorganiccarboninagriculturalsystemsofsixcountriesineastafricaaliteraturereviewofstatusandcarbonsequestrationpotential |