Environmental Conservation. The expanding Sahara / Cloudsley-Thompson, J. L.

Public ISBD Titre de série : Environmental Conservation Titre : The expanding Sahara Type de document : texte imprimé Auteurs : Cloudsley-Thompson, J. L. Année de publication : 1974 ISBN/ISSN/EAN : CI-06823 Note générale : the belts of Savana lying to the south of the Sahara are described. Evidence is then presented which suggests that these have been created from forest by shifting cultivation and the use of fire : they have probably developed contemporaneously with the evalution of Man and increase in human population. The effect of climatic changes in creasing desert are discussed and the conclusion in reached that present conditions in much of the Sahara have been engendered almost entirely by human activities. Langues : Anglais (eng) Mots-clés : Environnement  Sécheresse  Zone aride  Changement climatique  Influence humaine  Savane Index. décimale : 363.7 Environnement : classer ici la protection de l'environnement Résumé : the belts of Savana lying to the south of the Sahara are described. Evidence is then presented which suggests that these have been created from forest by shifting cultivation and the use of fire : they have probably developed contemporaneously with the evalution of Man and increase in human population. The effect of climatic changes in creasing desert are discussed and the conclusion in reached that present conditions in much of the Sahara have been engendered almost entirely by human activities. Note de contenu : the belts of Savana lying to the south of the Sahara are described. Evidence is then presented which suggests that these have been created from forest by shifting cultivation and the use of fire : they have probably developed contemporaneously with the evalution of Man and increase in human population. The effect of climatic changes in creasing desert are discussed and the conclusion in reached that present conditions in much of the Sahara have been engendered almost entirely by human activities. Environmental Conservation. The expanding Sahara [texte imprimé] / Cloudsley-Thompson, J. L. . - 1974. ISSN : CI-06823 the belts of Savana lying to the south of the Sahara are described. Evidence is then presented which suggests that these have been created from forest by shifting cultivation and the use of fire : they have probably developed contemporaneously with the evalution of Man and increase in human population. The effect of climatic changes in creasing desert are discussed and the conclusion in reached that present conditions in much of the Sahara have been engendered almost entirely by human activities. Langues : Anglais (eng) Mots-clés : Environnement  Sécheresse  Zone aride  Changement climatique  Influence humaine  Savane Index. décimale : 363.7 Environnement : classer ici la protection de l'environnement Résumé : the belts of Savana lying to the south of the Sahara are described. Evidence is then presented which suggests that these have been created from forest by shifting cultivation and the use of fire : they have probably developed contemporaneously with the evalution of Man and increase in human population. The effect of climatic changes in creasing desert are discussed and the conclusion in reached that present conditions in much of the Sahara have been engendered almost entirely by human activities. Note de contenu : the belts of Savana lying to the south of the Sahara are described. Evidence is then presented which suggests that these have been created from forest by shifting cultivation and the use of fire : they have probably developed contemporaneously with the evalution of Man and increase in human population. The effect of climatic changes in creasing desert are discussed and the conclusion in reached that present conditions in much of the Sahara have been engendered almost entirely by human activities.

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Intern. J. Environmental Studies. Recent expansion of the Sahara / Cloudsley-Thompson, J. L.

Public ISBD Titre de série : Intern. J. Environmental Studies Titre : Recent expansion of the Sahara Type de document : texte imprimé Auteurs : Cloudsley-Thompson, J. L. Année de publication : 1971 ISBN/ISSN/EAN : CI-05443 Note générale : During the late Pleistacene, the Sahara experienced both pluvial and inter-pluvial periods when the climate was successevely wetter and drier than it is today. At the end of Pleistacene the regions bordering its southern edge were richly supplied with lakes and rivers. These dried up between 7000 and 3500 B.P. as the climate become progressively drier and warmer. Subsequent impoverishment of the flora and fauna has been due almost entirely to human activies : bad agriculture, felling trees for fuel and overgrazing by domestic stock. Langues : Anglais (eng) Mots-clés : Climatologie  Pluviométrie  Désert  Environnement  Pléistacène Index. décimale : 363.7 Environnement : classer ici la protection de l'environnement Résumé : During the late Pleistacene, the Sahara experienced both pluvial and inter-pluvial periods when the climate was successevely wetter and drier than it is today. At the end of Pleistacene the regions bordering its southern edge were richly supplied with lakes and rivers. These dried up between 7000 and 3500 B.P. as the climate become progressively drier and warmer. Subsequent impoverishment of the flora and fauna has been due almost entirely to human activies : bad agriculture, felling trees for fuel and overgrazing by domestic stock. Note de contenu : During the late Pleistacene, the Sahara experienced both pluvial and inter-pluvial periods when the climate was successevely wetter and drier than it is today. At the end of Pleistacene the regions bordering its southern edge were richly supplied with lakes and rivers. These dried up between 7000 and 3500 B.P. as the climate become progressively drier and warmer. Subsequent impoverishment of the flora and fauna has been due almost entirely to human activies : bad agriculture, felling trees for fuel and overgrazing by domestic stock. Intern. J. Environmental Studies. Recent expansion of the Sahara [texte imprimé] / Cloudsley-Thompson, J. L. . - 1971. ISSN : CI-05443 During the late Pleistacene, the Sahara experienced both pluvial and inter-pluvial periods when the climate was successevely wetter and drier than it is today. At the end of Pleistacene the regions bordering its southern edge were richly supplied with lakes and rivers. These dried up between 7000 and 3500 B.P. as the climate become progressively drier and warmer. Subsequent impoverishment of the flora and fauna has been due almost entirely to human activies : bad agriculture, felling trees for fuel and overgrazing by domestic stock. Langues : Anglais (eng) Mots-clés : Climatologie  Pluviométrie  Désert  Environnement  Pléistacène Index. décimale : 363.7 Environnement : classer ici la protection de l'environnement Résumé : During the late Pleistacene, the Sahara experienced both pluvial and inter-pluvial periods when the climate was successevely wetter and drier than it is today. At the end of Pleistacene the regions bordering its southern edge were richly supplied with lakes and rivers. These dried up between 7000 and 3500 B.P. as the climate become progressively drier and warmer. Subsequent impoverishment of the flora and fauna has been due almost entirely to human activies : bad agriculture, felling trees for fuel and overgrazing by domestic stock. Note de contenu : During the late Pleistacene, the Sahara experienced both pluvial and inter-pluvial periods when the climate was successevely wetter and drier than it is today. At the end of Pleistacene the regions bordering its southern edge were richly supplied with lakes and rivers. These dried up between 7000 and 3500 B.P. as the climate become progressively drier and warmer. Subsequent impoverishment of the flora and fauna has been due almost entirely to human activies : bad agriculture, felling trees for fuel and overgrazing by domestic stock.

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