IMPACT OF CLIMATE CHANGE ON LAND USE/LAND COVER WITH EMPHASIS ON TREE SPECIES BIODIVERSITY IN BARA LOCALITY, NORTH KORDOFAN STATE, SUDAN

Awad Elkarim S. O. Khalifa, Elamin S. Mohammed, Hassan E. Adam, Mustafa M. El-Abbas, Mohamed E. Elhaja

Abstract


The broad objective of current paper was to study the impact of climate change on land use /land cover change with emphasis on vegetation cover; and to investigate farmers’ perception on the consequence of climate variability and change on tree species biodiversity in Bara Locality. Data was collected from satellite imageries as well as questionnaire and field observations. In order to depict the impact of climate change on land use/land cover, multi-temporal Landsat TM satellite imagery (cloud free) for the period from 1986 to 2011 were acquired, interpreted and analyzed. Remotely sensed data was analyzed using unsupervised classification and change detection analysis. Interview with local farmers, group discussions with key informants and field observations were conducted. One hundred and fourty respondents, from six villages, were randomly selected in Bara locality. Social data was analyzed using descriptive statistics. Results and analysis of classified imageries showed shrinkage of vegetation cover from 9.3% in 1986 to 7.8% in 2011, and increase of sand dunes from 69.5% to 77% during the same period. The impact of climate change on tree species biodiversity showed retrogression succession where dominant trees as well as Acacia senegal lost their dominance (as indicated by 83.3% of the respondents) for less preferred tree species such as Leptadenia pyrotechnica and Calotropis procera.

Keywords


Climate change, farmer’s perception, remote sensing, species diversity, sand dune

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