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Potential for soil organic carbon sequestration in grasslands in East African countries: A review

Tessema, Bezaye and Sommer, Rolf and Piikki, Kristin and Söderström, Mats and Namirembe, Sara and Notenbaert, An and Tamene, Lulseged and Nyawira, Sylvia and Paul, Birthe (2020). Potential for soil organic carbon sequestration in grasslands in East African countries: A review. Grassland Science. 66 , 135-144
[Article Review/Survey]

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Abstract

Grasslands occupy almost half of the world's land area. Soil organic carbon (SOC) is a key indicator of soil fertility and grassland productivity. Increasing SOC stocks (so-called SOC sequestration) improves soil fertility and contributes to climate change mitigation by binding atmospheric carbon dioxide (CO2). Grasslands constitute about 70% of all agricultural land, but their potential for SOC sequestration is largely unknown. This review paper quantitatively summarizes observation-based studies on the SOC sequestration potential of grasslands in six East African countries (Burundi, Ethiopia, Kenya, Rwanda, Tanzania and Uganda) and seeks to identify knowledge gaps related to SOC sequestration potential in the region. In the studies reviewed, SOC stocks in grasslands range from 3 to 93 Mg C/ha in the upper 0.3 m of the soil profile, while SOC sequestration rate ranges from 0.1 to 3.1 Mg C ha(-1) year(-1) under different management strategies. Grazing management is reported to have a considerable impact on SOC sequestration rates, and grassland regeneration and protection are recommended as options to stimulate SOC sequestration. However, a very limited number of relevant studies are available (n = 23) and there is a need for fundamental information on SOC sequestration potential in the region. The effectiveness of potential incentive mechanisms, such as payments for environmental services, to foster uptake of SOC-enhancing practices should also be assessed.

Authors/Creators:Tessema, Bezaye and Sommer, Rolf and Piikki, Kristin and Söderström, Mats and Namirembe, Sara and Notenbaert, An and Tamene, Lulseged and Nyawira, Sylvia and Paul, Birthe
Title:Potential for soil organic carbon sequestration in grasslands in East African countries: A review
Year of publishing :2020
Volume:66
Page range:135-144
Number of Pages:10
Publisher:John Wiley & Sons Australia, Ltd, Japanese Society of Grassland Science
ISSN:1744-6961
Language:English
Publication Type:Article Review/Survey
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Keywords:GHG emission, grassland, grazing, management practices
URN:NBN:urn:nbn:se:slu:epsilon-p-104584
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-104584
Additional ID:
Type of IDID
DOI10.1111/grs.12267
Web of Science (WoS)000512367500001
ID Code:17279
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:19 Aug 2020 11:56
Metadata Last Modified:19 Aug 2020 11:56

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