Land Degradation Monitoring in Namibia: A First Approximation |
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Authors: | Patrik Klintenberg Mary Seely |
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Institution: | (1) The Desert Research Foundation of Namibia, Windhoek, Namibia;(2) Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden |
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Abstract: | This paper presents development of a first approximation of a Namibian, national level, land degradation monitoring system.
The process involved a large number of stakeholders and led to the definition of four primary indicators that were regarded
as related to land degradation in Namibia: population pressure, livestock pressure, seasonal rainfall and erosion hazards.
These indicators were calculated annually for the period 1971–1997. Annual land degradation risk maps were produced for the
same period by combining the indicators. A time series analysis of results generated by indicators was undertaken at two sites.
The analysis revealed a general trend towards an increased land degradation risk over the period 1971–1997. A decrease in
annual rainfall and an increase in livestock numbers caused this negative trend at one site, while decreased annual rainfall
and increased human population were the causes at a second site. Evaluation of resulting maps through direct field observations
and long-term monitoring at selected study sites with different conditions relevant for the indicators defined, is an essential
next step. |
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Keywords: | desertification Geographic Information Systems GIS indicators land degradation Namibia |
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