Terrestrial carbon stocks following 15 years of integrated watershed management intervention in semi-arid Ethiopia
DC Field | Value | Language |
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dc.contributor.author | Gessesse, Tigist Araya | - |
dc.contributor.author | Khamzina, Asia | - |
dc.contributor.author | Gebresamuel, Girmay | - |
dc.contributor.author | Amelung, Wulf | - |
dc.date.accessioned | 2021-08-30T20:28:00Z | - |
dc.date.available | 2021-08-30T20:28:00Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-07 | - |
dc.identifier.issn | 0341-8162 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/54901 | - |
dc.description.abstract | Our study investigated the total terrestrial stock of organic carbon and its controlling factors in prevalent land-use systems in semi-arid Ethiopia (610 mm of annual rainfall), as part of the impact assessment of the national Integrated Watershed Management (IWM) program. Above- and below-ground biomass and soil organic carbon (SOC) stocks of major land-use systems (i.e., exclosure, cropland, rangeland, and bare land) were quantified after field sampling along a topographic gradient. We found that aboveground carbon stocks peaked in the 15-year-old exclosures (9.08 +/- 1.44 Mg ha(-1)) owing to intact woody and grass vegetation as well as substantial litter cover ( > 20% of the total biomass). Croplands cultivated with wheat and rangelands vegetated with perennial grasses showed average aboveground carbon stocks of 3.16 +/- 0.24 and 1.45 +/- 0.19 Mg ha(-1), respectively. The belowground biomass carbon stock was particularly low in croplands (0.76 +/- 0.09 Mg ha(-1)), exceeded by that in both exclosures and rangelands, where values averaged 3.67 +/- 0.06 and 3.04 +/- 0.42 Mg ha(-1), respectively. The topsoil (0-30 cm) SOC stocks also varied with land-use systems but showed a different order, peaking in rangelands (53.9 +/- 10.1 Mg ha(-1)) and exclosures (41.4 +/- 8.1 Mg ha(-1)), followed by bare lands (29.0 +/- 11.5 Mg ha(-1)) and croplands (26.4 +/- 4.6 Mg ha(-1)). The sub-soils (30-100 cm) added 40% to this SOC storage. The greatest total SOC stock identified in exclosures that had been established primarily on degraded hillslopes may signify a successful restoration effort under the IWM program. However, croplands exhibited the lowest SOC stock, which implies the need for urgent interventions to improve the soil fertility. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | SOIL ORGANIC-CARBON | - |
dc.subject | DIFFERENT LAND USES | - |
dc.subject | ROCK FRAGMENTS | - |
dc.subject | SEQUESTERING CARBON | - |
dc.subject | NITROGEN STOCKS | - |
dc.subject | LOESS PLATEAU | - |
dc.subject | BULK-DENSITY | - |
dc.subject | MATTER | - |
dc.subject | TIGRAY | - |
dc.subject | ROOT | - |
dc.title | Terrestrial carbon stocks following 15 years of integrated watershed management intervention in semi-arid Ethiopia | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Khamzina, Asia | - |
dc.identifier.doi | 10.1016/j.catena.2020.104543 | - |
dc.identifier.scopusid | 2-s2.0-85081254120 | - |
dc.identifier.wosid | 000525324600027 | - |
dc.identifier.bibliographicCitation | CATENA, v.190 | - |
dc.relation.isPartOf | CATENA | - |
dc.citation.title | CATENA | - |
dc.citation.volume | 190 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Geology | - |
dc.relation.journalResearchArea | Agriculture | - |
dc.relation.journalResearchArea | Water Resources | - |
dc.relation.journalWebOfScienceCategory | Geosciences, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Soil Science | - |
dc.relation.journalWebOfScienceCategory | Water Resources | - |
dc.subject.keywordPlus | SOIL ORGANIC-CARBON | - |
dc.subject.keywordPlus | DIFFERENT LAND USES | - |
dc.subject.keywordPlus | ROCK FRAGMENTS | - |
dc.subject.keywordPlus | SEQUESTERING CARBON | - |
dc.subject.keywordPlus | NITROGEN STOCKS | - |
dc.subject.keywordPlus | LOESS PLATEAU | - |
dc.subject.keywordPlus | BULK-DENSITY | - |
dc.subject.keywordPlus | MATTER | - |
dc.subject.keywordPlus | TIGRAY | - |
dc.subject.keywordPlus | ROOT | - |
dc.subject.keywordAuthor | Carbon sequestration | - |
dc.subject.keywordAuthor | Biomass carbon | - |
dc.subject.keywordAuthor | Soil organic carbon stock | - |
dc.subject.keywordAuthor | Land-use system | - |
dc.subject.keywordAuthor | Tigray | - |
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