Remote sensing of bush encroachment on commercial cattle farms in semi-arid rangelands in Namibia
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Remote sensing of bush encroachment on commercial cattle farms in semi-arid rangelands in Namibia. / Schröter, Matthias; Jakoby, Oliver; Olbrich, Roland et al.
Lüneburg : Institut für Volkswirtschaftslehre der Universität Lüneburg, 2009. (Working paper series in economics; Nr. 131).Publikation: Arbeits- oder Diskussionspapiere und Berichte › Arbeits- oder Diskussionspapiere
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TY - UNPB
T1 - Remote sensing of bush encroachment on commercial cattle farms in semi-arid rangelands in Namibia
AU - Schröter, Matthias
AU - Jakoby, Oliver
AU - Olbrich, Roland
AU - Eichhorn, Marcus
AU - Baumgärtner, Stefan
N1 - Literaturverz. S. 22 - 24. - Parallel als Online-Ausg. erschienen unter der Adresse http://www.uni-lueneburg.de/fb2/vwl/papers/wp_131_Upload.pdf
PY - 2009
Y1 - 2009
N2 - Bush encroachment is one of the most extensive changes in land cover in Namibia and an urgent problem for cattle farming, rapidly reducing the productivity of the rangeland. Despite the severity of these consequences, a complete and accurate assessment of bush encroached areas is still missing at large. This study aims at assessing bush encroachment on commercial cattle farms in central Namibia by employing remote sensing methods to distinguish between areas covered by bush and open rangeland. Herein we use different classification techniques and vegetation indices to characterize the nature of vegetation cover. Our analysis shows that results are sensitive to specific classifications of indices. As an accuracy assessment could not be run on these results we could not analyze which classification approximates real bush encroachment best. Hence, this study highlights the need for further analysis. Ground truth data, in the form of field mappings, high resolution aerial photographs or local expert knowledge are needed to gain further insights and produce reliable results.
AB - Bush encroachment is one of the most extensive changes in land cover in Namibia and an urgent problem for cattle farming, rapidly reducing the productivity of the rangeland. Despite the severity of these consequences, a complete and accurate assessment of bush encroached areas is still missing at large. This study aims at assessing bush encroachment on commercial cattle farms in central Namibia by employing remote sensing methods to distinguish between areas covered by bush and open rangeland. Herein we use different classification techniques and vegetation indices to characterize the nature of vegetation cover. Our analysis shows that results are sensitive to specific classifications of indices. As an accuracy assessment could not be run on these results we could not analyze which classification approximates real bush encroachment best. Hence, this study highlights the need for further analysis. Ground truth data, in the form of field mappings, high resolution aerial photographs or local expert knowledge are needed to gain further insights and produce reliable results.
KW - Sustainability sciences, Management & Economics
KW - remote sensing
KW - semi-arid rangelands
KW - cattle farming
KW - bush encroachment
M3 - Working papers
T3 - Working paper series in economics
BT - Remote sensing of bush encroachment on commercial cattle farms in semi-arid rangelands in Namibia
PB - Institut für Volkswirtschaftslehre der Universität Lüneburg
CY - Lüneburg
ER -