期刊名称：Science et changements planétaires / Sécheresse
印刷版ISSN：1147-7806
电子版ISSN：1777-5922
出版年度：1997
卷号：8
期号：3
页码：151-156
出版社：John Libbey Eurotext
摘要：Authors Philippe C. Chamard , Marie-Françoise Courel , Michèle Adesir-Schilling , Cheick Hamalla Diakite UMR 183, Prodig, Institut de géographie, 191, rue Saint-Jacques, 75005 Paris, France, Institut d’Économie Rurale, BP 258, Bamako, Mali. Page(s) : 151-6 Published in: 1997 Continuing rainfall shortages and a decrease in river flow rates since 1968 have had major economic and environmental consequences for the alluvial plains of the Niger inland delta. In order to make natural summer flooding easier, increasing the surface area of rice that can be cultivated and helping fish move around, fishermen and rice farmers have dug channels through the banks and levees of the rivers and their tributaries. But these simple operations, conducted without any equipment to control water flows such as weirs and floodgates, does not allow the annual flooding to be successfully managed, and could cause problems if rainfall returns to normal.
