Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania
Knowledge of greenhouse gas (GHG) fluxes in soils is a prerequisite to constrain national, continental, and global GHG budgets. However, data characterizing fluxes from agricultural soils of Africa are markedly limited. We measured carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4) fluxes...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2016
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/129458 |
| _version_ | 1855534526086774784 |
|---|---|
| author | Rosenstock, Todd S. Mpanda, Mathew Pelster, David E. Butterbach-Bahl, Klaus Rufino, Mariana C. Thiong'o, Margaret Mutuo, Paul Abwanda, Sheila Rioux, Janie Kimaro, Anthony A. Neufeldt, Henry |
| author_browse | Abwanda, Sheila Butterbach-Bahl, Klaus Kimaro, Anthony A. Mpanda, Mathew Mutuo, Paul Neufeldt, Henry Pelster, David E. Rioux, Janie Rosenstock, Todd S. Rufino, Mariana C. Thiong'o, Margaret |
| author_facet | Rosenstock, Todd S. Mpanda, Mathew Pelster, David E. Butterbach-Bahl, Klaus Rufino, Mariana C. Thiong'o, Margaret Mutuo, Paul Abwanda, Sheila Rioux, Janie Kimaro, Anthony A. Neufeldt, Henry |
| author_sort | Rosenstock, Todd S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Knowledge of greenhouse gas (GHG) fluxes in soils is a prerequisite to constrain national, continental, and global GHG budgets. However, data characterizing fluxes from agricultural soils of Africa are markedly limited. We measured carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4) fluxes at 10 farmer‐managed sites of six crop types for 1 year in Kenya and Tanzania using static chambers and gas chromatography. Cumulative emissions ranged between 3.5–15.9 Mg CO2‐C ha−1 yr−1, 0.4–3.9 kg N2O‐N ha−1 yr−1, and −1.2–10.1 kg CH4‐C ha−1 yr−1, depending on crop type, environmental conditions, and management. Manure inputs increased CO2 (p = 0.03), but not N2O or CH4, emissions. Soil cultivation had no discernable effect on emissions of any of the three gases. Fluxes of CO2 and N2O were 54–208% greater (p < 0.05) during the wet versus the dry seasons for some, but not all, crop types. The heterogeneity and seasonality of fluxes suggest that the available data describing soil fluxes in Africa, based on measurements of limited duration of only a few crop types and agroecological zones, are inadequate to use as a basis for estimating the impact of agricultural soils on GHG budgets. A targeted effort to understand the magnitude and mechanisms underlying African agricultural soil fluxes is necessary to accurately estimate the influence of this source on the global climate system and for determining mitigation strategies. |
| format | Journal Article |
| id | CGSpace129458 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1294582024-11-15T08:52:53Z Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania Rosenstock, Todd S. Mpanda, Mathew Pelster, David E. Butterbach-Bahl, Klaus Rufino, Mariana C. Thiong'o, Margaret Mutuo, Paul Abwanda, Sheila Rioux, Janie Kimaro, Anthony A. Neufeldt, Henry kenya tanzania agricultural soils Knowledge of greenhouse gas (GHG) fluxes in soils is a prerequisite to constrain national, continental, and global GHG budgets. However, data characterizing fluxes from agricultural soils of Africa are markedly limited. We measured carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4) fluxes at 10 farmer‐managed sites of six crop types for 1 year in Kenya and Tanzania using static chambers and gas chromatography. Cumulative emissions ranged between 3.5–15.9 Mg CO2‐C ha−1 yr−1, 0.4–3.9 kg N2O‐N ha−1 yr−1, and −1.2–10.1 kg CH4‐C ha−1 yr−1, depending on crop type, environmental conditions, and management. Manure inputs increased CO2 (p = 0.03), but not N2O or CH4, emissions. Soil cultivation had no discernable effect on emissions of any of the three gases. Fluxes of CO2 and N2O were 54–208% greater (p < 0.05) during the wet versus the dry seasons for some, but not all, crop types. The heterogeneity and seasonality of fluxes suggest that the available data describing soil fluxes in Africa, based on measurements of limited duration of only a few crop types and agroecological zones, are inadequate to use as a basis for estimating the impact of agricultural soils on GHG budgets. A targeted effort to understand the magnitude and mechanisms underlying African agricultural soil fluxes is necessary to accurately estimate the influence of this source on the global climate system and for determining mitigation strategies. 2016-06 2023-03-10T14:35:48Z 2023-03-10T14:35:48Z Journal Article https://hdl.handle.net/10568/129458 en Open Access Wiley Rosenstock, Todd S.; Mpanda, Mathew; Pelster, David E.; Butterbach-Bahl, Klaus; Rufino, Mariana C.; Thiong'o, Margaret; Mutuo, Paul; Abwanda, Sheila; Rioux, Janie; Kimaro, Anthony A.; Neufeldt, Henry. 2016. Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania. Journal of Geophysical Research: Biogeosciences 121: 1568-1580 |
| spellingShingle | kenya tanzania agricultural soils Rosenstock, Todd S. Mpanda, Mathew Pelster, David E. Butterbach-Bahl, Klaus Rufino, Mariana C. Thiong'o, Margaret Mutuo, Paul Abwanda, Sheila Rioux, Janie Kimaro, Anthony A. Neufeldt, Henry Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania |
| title | Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania |
| title_full | Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania |
| title_fullStr | Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania |
| title_full_unstemmed | Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania |
| title_short | Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania |
| title_sort | greenhouse gas fluxes from agricultural soils of kenya and tanzania |
| topic | kenya tanzania agricultural soils |
| url | https://hdl.handle.net/10568/129458 |
| work_keys_str_mv | AT rosenstocktodds greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT mpandamathew greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT pelsterdavide greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT butterbachbahlklaus greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT rufinomarianac greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT thiongomargaret greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT mutuopaul greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT abwandasheila greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT riouxjanie greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT kimaroanthonya greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania AT neufeldthenry greenhousegasfluxesfromagriculturalsoilsofkenyaandtanzania |