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Read e-book online Adapting to Drought: Farmers, Famines and Desertification in PDF

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By Michael Mortimore

This ebook embodies the result of 13 years of analysis in drought-prone rural parts within the semi-arid sector of northern Nigeria. It describes the styles of adaptive behaviour saw between Hausa, Ful'be and Manga groups in keeping with recurrent drought within the Nineteen Seventies and Nineteen Eighties. The query of desertification is explored in a space the place the seen facts of relocating sand dunes is dramatic blame are tested in terms of the sphere proof. A critique is out there of deterministic theories and authoritarian suggestions. Professor Mortimore demonstrates a parallel among the observable resilience of semi-arid ecosystems and the adaptive recommendations of the human groups that inhabit them and indicates coverage instructions for strengthening that resilience.

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Extra info for Adapting to Drought: Farmers, Famines and Desertification in West Africa

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The Dry (or semi-arid) Zone is delimited on the basis of a number of approximately coincident climatic parameters mapped by Kowal and Knabe (1972). These include the isohyets for 1,000 mm annual rainfall, and 40 days' growing season. Since actual rainfall is subject to wide annual variation, the Dry Zone may also be described in terms of 9:1 confidence limits. Its southern boundary has an upper limit of 1,270 mm (that is, rainfall may be expected to 4°E 5° 1 - 1 1 1 1 1 11° 12° 13° 1 1 i 1 - —>* B [ 13° *\ 4 S' \ 'N.

Neither is it necessary, in order to gain basic insight into the policy implications. The measurement of meteorological drought, distinct from its effect on food supply or welfare, is possible using standard rainfall data and methods (chapter 6); so is the persistence of drought and eventually, perhaps, its prediction. Theories of'feedback', however, which link rainfall with land use at the regional scale, are extremely difficult to put to the test and lie beyond the scope of this study. A review of hydrological drought in northern Nigeria has, by contrast, to be based on very inadequate data which are not yet free from ambiguity.

2) and are continuous with adjacent areas of Niger Republic. The Dry (or semi-arid) Zone is delimited on the basis of a number of approximately coincident climatic parameters mapped by Kowal and Knabe (1972). These include the isohyets for 1,000 mm annual rainfall, and 40 days' growing season. Since actual rainfall is subject to wide annual variation, the Dry Zone may also be described in terms of 9:1 confidence limits. Its southern boundary has an upper limit of 1,270 mm (that is, rainfall may be expected to 4°E 5° 1 - 1 1 1 1 1 11° 12° 13° 1 1 i 1 - —>* B [ 13° *\ 4 S' \ 'N.

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