Show simple item record

dc.contributor.author Ringrose, S.
dc.contributor.author Jellema, A.
dc.contributor.author Huntsman-Mapila, P.
dc.contributor.author Baker, L.
dc.contributor.author Brubaker, K.
dc.date.accessioned 2008-07-24T11:30:18Z
dc.date.available 2008-07-24T11:30:18Z
dc.date.issued 2005-10-10
dc.identifier.citation Ringrose, S. et al (2005) Use of remotely sensed data in the analysis of soil-vegetation changes along a drying gradient peripheral to the Okavango Delta, Botswana, International Journal of Remote Sensing, Vol. 26, No. 19, 10 October, pp. 4293-4319 en
dc.identifier.issn 0143-1161
dc.identifier.issn 1366-5901 [online]
dc.identifier.uri http://hdl.handle.net/10311/174
dc.description.abstract This work determines the value of remotely sensed imagery in developing drying impacts which occur as a result of internal and/or external factors in the Okavango catchment. Three sites provide a preview of the consequences of Delta margin drying as depicted over historical, intermediate and geological timescales. Initially, supervised classification resulted in the identification of sequences of islands and flood plains and their associated vegetation cover on ETM+ imagery, with a classification accuracy of 74- 77%. Comparative results, augmented by patch analysis, suggest that through time, island woody vegetation cover has invaded the flood plains and locally developed protected ecotonal areas (extensions) which are densely treed, relative to adjacent, non-protected flood plains. Over longer time periods, protected areas between extensions became infilled with woody vegetation leading to, in effect, island enlargement or agglomeration. Disadvantages of long-term Delta drying in terms of natural resource management include a reduced availability of wetland-based construction and agricultural resources. If natural regeneration (island agglomeration) is allowed to take place, these resources may ultimately be replaced by dryland timber and potential cropland. en
dc.language.iso en en
dc.publisher Taylor & Francis; http://www.tandf.co.uk/journals/titles/01431161.asp en
dc.subject Okavango Delta en
dc.subject Remotely sensed imagery en
dc.subject Vegetation en
dc.title Use of remotely sensed data in the analysis of soil-vegetation changes along a drying gradient peripheral to the Okavango Delta, Botswana en
dc.type Article en


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search UBRISA


Advanced Search

Browse

My Account