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ASSESSING DESERTIFICATION IN ARID AUSTRALIA USING SATELLITE DATA 

作成者 Bastin, Gary, Chewings, Vanessa
日本十進分類法 (NDC) 471.71, 450
内容 研究概要:Large paddock size, complex vegetation patterns and variable rainfall combine to make assessment of grazing impact difficult in Australia's arid and semi-arid lands. Satellite data are useful in separating adverse grazing effects on vegetation cover from that caused by spatial and seasonal variability. Grazing is focussed on watering points and cover varies systematically with distance from water to produce a "grazing gradient". After good rains, vegetation cover is fully restored close to watering points if landscapes are not degraded while the persistence of a gradient indicates land degradation or desertification. Two operational methods for objectively determining desertification over large areas are illustrated. We also show how the results of analysing satellite data can be effectively verified with airborne video data.
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
ハンドルURL http://mitizane.ll.chiba-u.jp/meta-bin/mt-pdetail.cgi?cd=00022207
掲載誌情報 Proceedings of the international symposium on "The role of remote sensing for the environmental issues in arid and semi-arid regions" page.81-88 (1997)
フルテキストへのリンク http://mitizane.ll.chiba-u.jp/metadb/up/assist1/C-18_12.pdf
言語 英語


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