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- W2003017529 abstract "Abstract Analysis of three Landsat Enhanced Thematic Mapper Plus (ETM+) images of the Putumayo region of Colombia, one of the primary regions of coca production in Colombia, demonstrated that aerial spraying of defoliants under the US ‘Plan Colombia’ programme impacted broad swaths of the landscape and had the unintended consequence of defoliating contiguous and interspersed native plant and food crop parcels. Using fractional coverage, field data collections and a hybrid classification, 106 178 ha of impacted land were found, compared with the United Nations Drug Control Program reported reduction in coca of 71 891 ha, an unexplained difference of 34 287 ha. The complex spatial organization of the Colombian coca‐producing landscape appeared to confound the spraying of defoliants, and as demonstrated here, many non‐coca land cover classes have been affected adversely. Acknowledgements The authors would like to thank the National Aeronautics & Space Administration (NASA) and the NASA New Investigator Program NAG 5‐12617 for funding this research. Further, the helpful suggestions and comments of the reviewers and Editor Giles Foody significantly improved this Letter." @default.
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- W2003017529 date "2006-01-10" @default.
- W2003017529 modified "2023-10-16" @default.
- W2003017529 title "Defoliation and the war on drugs in Putumayo, Colombia" @default.
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- W2003017529 doi "https://doi.org/10.1080/01431160500293708" @default.
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