EARTH OBSERVATION / GIS






Miombo woodland is one of the largest ecoregions in Africa. Miombo is a very resilient woodland type, however, continuous mismanagement will break the resilience of the ecosystem (the regrowth ability) and general land degradation will take place.




Multi-temporal analysis of deforestation pattern in miombo woodland provided an understanding of the resilience of ecosystem. It was established that five yr of continuous agricultural use had a traumatic effect on regrowth - which was documented and mapped by the use of Landsat data. 


Monitoring of large scale deforestation in miombo woodland is possible with Landsat data. It is possible to assess conversion of miombo woodland into cleared and regrowth areas after first year of fallow.


The study suggested that regrowth from deforested woodland will take place rapidly if areas only was used a few years, however, it also showed that land use of more than 5 years on the same piece of land have traumatic effect on regrowth ability of miombo woodland. This result adds to the understanding of the deforestation versus regrowth rate, as well as degradation of virgin miombo woodland when exposed to intensive agricultural use.


This change detection method can be used for assessment of degradation in miombo woodland and can as such be used as a tool in REDD for assessment of the state of miombo woodland.  


Danida ENRECA program 1991-94


PRINS, E. and KIKULA,  I.S. (1996): Assessment of deforestation and regrowth in SW. Tanzania using Landsat MSS data. Forest, Ecology and Management  Vol. 84. 263-266.




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