oa Botswana Notes & Records - An update on the use of remotely sensed data for range monitoring in south-east Botswana - 1984-1994

Volume 27, Issue 1
  • ISSN : 0525-5090



Satellite imagery interpretation and field data collection for range monitoring was undertaken over part of south-east Botswana during 1994. These data were compared to a comparable data set collected one decade ago. The comparison took place within various previously mapped eco-systems which showed increases or decreases in woody vegetation cover, species numbers, relative richness and palatability. After intermittent rains in the post-drought era, a number of problems are still prevalent. For instance, the increased pressure of communal activities in the Notwane area (VI) and especially around Lensweletau (II) has apparently led to significant declines in area of higher quality rangeland. The impact of increased farming (lands area extensions) has also contributed significantly to rangeland decline both in the hardveld and sandveld. As significant declines are taking place in range quality despite years of good rains, the assumption is that human pressure on the vegetation cover is excessive and leading to a situation where more pressure over a number of years may lead ultimately to irreversible losses.

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