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Spatial distribution of temporal dynamics in anthropogenic fires in Miombo savanna woodlands of Tanzania

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dc.contributor.author Tarimo, B.
dc.contributor.author Dick, O.B.
dc.contributor.author Gobakken, T.
dc.contributor.author Totland, O.
dc.date.accessioned 2015-11-25T12:46:38Z
dc.date.available 2015-11-25T12:46:38Z
dc.date.issued 2015
dc.identifier.citation Tarimo, B. et al. (2015). Spatial distribution of temporal dynamics in anthropogenic fires in Miombo savanna woodlands of Tanzania. Carbon balance management,10(18):1-15 en_GB
dc.identifier.other DOI 10.1186/s13021-015-0029-2
dc.identifier.uri http://www.taccire.sua.ac.tz/handle/123456789/479
dc.description The article is available at http://www.cbmjournal.com/ en_GB
dc.description.abstract Anthropogenic uses of fire play a key role in regulating fire regimes in African savannas. These fires contribute the highest proportion of the globally burned area, substantial biomass burning emissions and threaten maintenance and enhancement of carbon stocks. An understanding of fire regimes at local scales is required for the estimation and prediction of the contribution of these fires to the global carbon cycle and for fire management. We assessed the spatio-temporal distribution of fires in miombo woodlands of Tanzania, utilizing the MODIS active fire product and Landsat satellite images for the past ~40 years. Results: Our results show that up to 50.6% of the woodland area is affected by fire each year. An early and a late dry season peak in wetter and drier miombo, respectively, characterize the annual fire season. Wetter miombo areas have higher fire activity within a shorter annual fire season and have shorter return intervals. The fire regime is characterized by small-sized fires, with a higher ratio of small than large burned areas in the frequency-size distribution (β = 2.16 ± 0.04). Large-sized fires are rare, and occur more frequently in drier than in wetter miombo. Both fire prevalence and burned extents have decreased in the past decade. At a large scale, more than half of the woodland area has less than 2 years of fire return intervals, which prevent the occurrence of large intense fires. Conclusion: The sizes of fires, season of burning and spatial extent of occurrence are generally consistent across time, at the scale of the current analysis. Where traditional use of fire is restricted, a reassessment of fire management strategies may be required, if sustainability of tree cover is a priority. In such cases, there is a need to combine traditional and contemporary fire management practices. en_GB
dc.description.sponsorship Climate Change Impacts, Adaptation and Mitigation (CCIAM) Programme in Tanzania en_GB
dc.language.iso en en_GB
dc.publisher Springer en_GB
dc.subject Burned area en_GB
dc.subject Carbon stocks en_GB
dc.subject Fire history en_GB
dc.subject Surface fires en_GB
dc.subject Forest fire en_GB
dc.subject Miombo woodlands en_GB
dc.subject Fire regimes en_GB
dc.subject Tanzania en_GB
dc.subject Fire management en_GB
dc.title Spatial distribution of temporal dynamics in anthropogenic fires in Miombo savanna woodlands of Tanzania en_GB
dc.type Article en_GB

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