Berichte des Sonderforschungsbereichs 268
Refine
Document Type
- Article (116)
Has Fulltext
- yes (116)
Is part of the Bibliography
- no (116)
Institute
- SFB 268 (116)
02, 043
Studies on land use in Africa have usually been carried out by ethnologists or human geographers and were rarely concerned with data on the physical conditions of soil. There is hardly any issue, however, where interdependencies between natural and cultural factors are as evident as in the topic of land use. For this project the approach of three ethnologists, Braukämper, Kirscht and Platte, was therefore combined with the analysis of Thiemeyer as physical geographer. The area of research is the Local Government Area of Marte in the Nigerian State of Borno. As part of the Chad Basin this region is mainly characterised by clay sediments which are commonly labelled firgi by its inhabitants. Beside this general term, however, the local peasants clearly distinguish five types of soil (Kanuri: katti), to which different physical conditions and qualities with respect to their cultivation are attributed. The question arose how far can this popular knowledge, accumulated by agricultural experiences over generations, be correlated with scientific data. That is why samples of the mentioned types of soil were collected by the members of our team and analysed in the laboratory of the Frankfurt Institute of Physical Geography. The detailed presentation of this analysis has to be preceded by the classification of the respective soil types in the terminology of the indigenous farmers.
02, 161
We wish to emphasize the fact that so far our investigations have concentrated on documenting large bodies of data covering a number of linguistic units in an area which - as we hope to have demonstrated - displays a highly complex linguistic and ethnic structure. Our aim in the above remarks is essentially to throw out a challenge. In order to be able to interpret this situation in terms of the historic development of this zone of compression, further investigations are required, particularly regarding linguistic interference between Chadic and Niger-Congo languages in the south, as well as between Chadic and Nilo-Saharan languages, particularly Kanuri in the north-east and Songhay in the north-west. Ultimately, questions like the following are at stake: To what extent did the numerous Chadic languages preserve their original Hamitosemitic heritage? What is the impact of the Niger-Congo and Nilo-Saharan languages on individual Chadic languages in the respective border areas? In this context, detailed comparative studies between Chadic and Adamawa on the one hand, Chadic and Jukunoid and Chadic and Jarawan Bantu on the other hand as well as Chadic internal research, are urgently required.
02, 113
The land use in the Tangale-Waja area is analysed according to the two basic categories of geography: Firstly the manifold interaction between men and environment which form the spatial characteristics of an area, and secondly the decrease of influence with increasing distance. The importance of these two elementary factors is described by indicators as accessibility for the period from the precolonial situation until the time after World War II, when new roads were constructed through the mountainous area. Living in a hilly environment the self contained population (formerly called "hill pagans") had developed special agricultural techniques which can be considered ecologically well adapted. The opening up of the area after the pacification, Christianity and education, led to a considerable increase in population, the expansion of land under cultivation, and the change of settlement structure by down-hill population movement. This resulted in overuse of the fragile natural resources. The size of farm steads became too small for the family unit and the still low accessibility of the hinterland of the main interregional roads as well as inappropriate techniques of agricultural production are shortcomings causing heavy damage to the physical environment and decreasing living standards of the local population.
02, 227
The account of Borno's war with Mandara thus recounted above, at least from the point of view of the Mandara Chronicler, and all the other accounts I have given above clearly portray to us the essence of the Mune in that oppression and/or a war of caprice is not enjoined. And the war against Mandara was clearly a war of caprice, as Mandara had clearly recanted on its recalcitrance, when threatened. The essence of the Chronicle itself, however, is that we are here seeing, from accounts of an eye-witness, the portrayal of a polity whose language principles and practice of diplomacy, in war and in peace, are not less developed than any we have seen in the states of Euro-Germanic experience, of comparable times. The basis of this well ordered art is essentially the Mune, even though in its universalist form we may wish to assign it to the Book and the Sunna of Islam. Why not then, should we not regard the Mune as the constitution of the pre-colonial Borno State? Munen - ba (not in the Mune), for the Sayfawa ruler is certainly more binding than most modern constitutions had been binding on leaders of present-day African States!
02, 255
The Lake Chad Basin is a major geographical region in the central part of the Sudan zone of Africa. The northern parts, however, extend into the Sahel and the southern parts of the Sahara desert. It consists of an extensive shallow depression of about 1.536.000 km2 (600.000 miles2) of which about 10% lies in Nigeria. The greater part is shared between the three countries of Cameroon, Chad and Niger. Climatically and agriculturally, the Chad Basin lies within the dry or semi-arid zone of Nigeria. It is a marginal area which has experienced severe droughts and considerable environmental changes in recent years. The natural environment, its use and misuse, and the threat of life posed by environmental pollution dominate discussions on environmental change. But in addition to the natural or physical environment, there are other equally important 'environments' which deserve some attention in view of the role that they play in generating economic growth and in ensuring sustainable development which is the central issue in our concern about the environment. These other environments are the cultural environment, the political environment and the economic environment, both internal and external. In the Chad Basin, all these other environments, along with the natural environment have been greatly influenced by its land locked location in the heart of Africa.
02, 197
Yerwa is the last of the Borno capitals. Although established in the first decade of colonial administration, it cannot be compared with the many other towns like Fort Lamy, Jos, Kaduna, Niamey et al. which all developed about the same time. Colonial interference with the development of Yerwa appears restricted, mainly, to insistence upon wider roads than a Borno town otherwise would have featured and resettlement schemes, e.g. Mafoni, Ari Askeri. The following is based on the premise that as the town - despite time and political circumstances of its emergence - is a distinctive Borno town, also occupational diversification and structure are distinctively related to urban Borno culture.
01, 071
Située dans l'extrême sud-est de Burkina Faso, la Chaîne grèseuse de Gobnangou se détache du reste du paysage par d'abruptes falaises. Autant les terres au nord que celles au sud sont exceptionnellement densément peuplées. Les Gulmances qui y vivent font de l'agriculture itinérante. Les périodes de cultures varient selon la qualité du sol de 5 à 20 ans. Les périodes de jachères pour la régénération des sols varient énormément selon les types de sols et l'intensité de l'utilisation précédente et peuvent aller jusqu'à 30 ans. Mais ici aussi, l'explosion démographique entraîne une diminution du temps de jachères. L'aspect de la végétation et sa composition diffèrent beaucoup et dépendent de nombreux facteurs. Ils sont surtout influencés par l'homme: outre l'agriculture itinérante, le pâturage, la coupe du bois de chauffage et les feux peuvent être citer. On decrirá ici les communautés de végétations de deux types de sites qui ont pour point commun d'être portées par des sols pauvres. La principale différence entre ces types de sites est la profondeur des sols et donc leur ressources en eau.
01, 047
L'art de soigner par les plantes ou phytothérapie remonte à l'origine des temps. L'Homme a développé trés tôt une relation intime entre lui et le milieu qui l'entoure. Pour subvenir à ses besoins, il a appris à se servir des éléments naturels indispensables à son existence. Si en Europe la phytothérapie, jadis florissante, a connu un déclin à cause de la découverte de molécules chimiques de synthèse, en Afrique les médicaments à base de plantes restent les produits les plus utilisés par l'immense majorité de la population dans des villages comme des villes. C'est le cas du Burkina Faso où la pharmacopée traditionnelle, en temps que système de soins, demeure le système le plus populaire parce que mieux intégré aux réalités socio-culturelles des populations. Pour notre exposé, nous avons retenu dix espèces de plantes qui sont utilisées dans la médecine traditionelle populaire pour traiter les maladies les plus courantes comme les accés fébriles dus au paludisme, la jaunisse ou ictère, les diarrhées, la toux etc.
01, 033
Le Burkina Faso connaît une urbanisation relativement modérée. En effet, selon le recensement de décembre 1985, le taux d'urbanisation s'élevait à 13,6% et cela en tenant compte des seize centres secondaires de plus de 10.000 habitants. En se basant sur les 119 localités de plus de 5.000 habitants, ce taux dépasse à peine 27%. Or des pays tels que la Côte d'Ivoire, le Ghana et le Sénégal présentaient au même moment des taux de 45 à 50%. Cependant la taille et le nombre des centres urbains ne cessent de croître. Mais jusqu'à présent, le pays ne compte que deux principales villes: Ouagadougou et Bobo Dioulasso avec respectivement 441.514 et 228.668 habitants soit 70% environ de la population urbaine nationale. Les estimations de 1992 donnent à Ouagadougou 842.000 habitants et environ 400.000 à Bobo-Dioulasso. Ouagadougou, la capitale est sans doute le pôle le plus développé avec une armature urbaine assez complète, des activités et des fonctions diversifiées. Le développement urbain est ici plus perceptible qu'ailleurs, il en est autant des problèmes: équipements insuffisants et inadaptés, marginalisation des populations démunies, destruction du patrimoine naturel, forte croissance démographique. Les problèmes environnementaux sont multiples et se manifestent différemment avec plus ou moins d'acuité. C'est cet aspect précis que nous allons analyser.
01, 055
La métallurgie du fer jouit d'un regain d'intérêt en Afrique depuis une décénnie. Alors que les diffusionistes et les antidiffusionistes se sont affrontés dans les années 1970, on assiste aujourd'hui à une nouvelle fièvre du "fer" où les chercheurs, mettant de côté l'idéologie, travaillent avec acharnement sur les fourneaux de réduction et sur toutes les traces de cette métallurgie. Les résultats obtenus sont déja impressionnants. L'environnement constituent aussi, désormais, une préoccupation majeure des chercheurs. Les recherches en paléométallurgie au Burkina Faso n'échappent pas totalemennt à cette critique. C'est pour attirer plus d'attention sur l'important complément sociologique des investigations archéologiques que nous proposons en ces lignes les quelques informations relatives aux conditions sociales des forgerons, potiers et potières, réunis dans plusieurs nationalités du Burkina Faso par une sorte de communauté de destin: les arts du feu.