Relationship between carbon stocks and tree species diversity in a humid Guinean savanna landscape in northern Sierra Leone

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dc.contributor University of Helsinki, Department of Geosciences and Geography en
dc.contributor University of Helsinki, Institute for Atmospheric and Earth System Research (INAR) en
dc.contributor University of Helsinki, Department of Geosciences and Geography en
dc.contributor.author Amara, Edward
dc.contributor.author Heiskanen, Janne
dc.contributor.author Aynekulu, Ermias
dc.contributor.author Pellikka, Petri Kauko Emil
dc.date.accessioned 2019-11-22T12:21:01Z
dc.date.available 2019-11-22T12:21:01Z
dc.date.issued 2019-07-03
dc.identifier.citation Amara , E , Heiskanen , J , Aynekulu , E & Pellikka , P K E 2019 , ' Relationship between carbon stocks and tree species diversity in a humid Guinean savanna landscape in northern Sierra Leone ' , Southern Forests , vol. 81 , no. 3 , pp. 235-245 . https://doi.org/10.2989/20702620.2018.1555947 en
dc.identifier.issn 2070-2620
dc.identifier.other PURE: 123679612
dc.identifier.other PURE UUID: c6ff85f4-aa18-4fcd-b704-bf1ec3388aaa
dc.identifier.other WOS: 000464572200001
dc.identifier.uri http://hdl.handle.net/10138/307230
dc.description.abstract Global sustainable development goals include reducing greenhouse gas emissions from land-use change and maintaining biodiversity. Many studies have examined carbon stocks and tree species diversity, but few have studied the humid Guinean savanna ecosystem. This study focuses on a humid savanna landscape in northern Sierra Leone, aiming to assess carbon stocks and tree species diversity and compare their relationships in different vegetation types. We surveyed 160 sample plots (0.1 ha) in the field for tree species, aboveground carbon (AGC) and soil organic carbon (SOC). In total, 90 tree species were identified in the field. Gmelina arborea, an exotic tree species common in the foothills of the Kuru Hills Forest Reserve, and Combretum glutinosum, Pterocarpus erinaceous and Terminaria glaucescens, which are typical savanna trees, were the most common species. At landscape level, the mean AGC stock was 29.4 Mg C ha(-1) (SD 21.3) and mean topsoil (0-20 cm depth) SOC stock was 42.2 Mg C ha(-1) (SD 20.6). Mean tree species richness and Shannon index per plot were 7 (SD 4) and 1.6 (SD 0.6), respectively. Forests and woodlands had significantly higher mean AGC and tree species richness than bushland, wooded grassland or cropland (p <0.05). In the forest and bushland, a small number of large diameter trees covered a large portion of the total AGC stocks. Furthermore, a moderate linear correlation was observed between AGC and tree species richness (r = 0.475, p <0.001) and AGC and Shannon index (r = 0.375, p <0.05). The correlation between AGC and SOC was weak (r = 0.17, p <0.05). The results emphasise the role of forests and woodlands and large diameter trees in retaining AGC stocks and tree species diversity in the savanna ecosystem. en
dc.format.extent 11
dc.language.iso eng
dc.relation.ispartof Southern Forests
dc.rights en
dc.subject ABOVEGROUND BIOMASS en
dc.subject BIODIVERSITY en
dc.subject CLIMATE-CHANGE en
dc.subject COVER en
dc.subject FOREST en
dc.subject MANAGEMENT en
dc.subject MAP en
dc.subject ORGANIC-CARBON en
dc.subject STABILITY en
dc.subject STORAGE en
dc.subject aboveground carbon en
dc.subject soil organic carbon en
dc.subject tree species en
dc.subject 1172 Environmental sciences en
dc.title Relationship between carbon stocks and tree species diversity in a humid Guinean savanna landscape in northern Sierra Leone en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.2989/20702620.2018.1555947
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/acceptedVersion
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dc.contributor.pbl
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