Processus et enjeux d'eau en Afrique de l'Ouest soudano-sahélienne PDF Download

Author: Luc Descroix
Publisher: Archives contemporaines
ISBN: 281300314X
Category : Science
Languages : fr
Pages : 322

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Book Description
Ce livre décrit les processus hydrologiques et leurs dynamiques passées et actuelles au gré de l’évolution des agrosystèmes, de leur emprise spatiale, de leur capacité d’adaptation au changement global, et aux changements climatiques. Il se fonde sur l’indicateur que représente la capacité de rétention en eau des sols, qui conditionne la bonne alimentation en eau et en nutriments des systèmes racinaires, tant des cultures que de la végétation naturelle. C’est aussi cette rétention en eau qui permet de limiter le ruissellement et les inondations en aval. Parti d’une réflexion sur le paradoxe hydrologique du Sahel (la hausse des écoulements observée dans cette région durant la sécheresse), l’ouvrage décrit les enjeux de ces évolutions spatio-temporelles et entend montrer que la pression démographique n’est pas forcément un facteur de dégradation des agrosystèmes; au contraire, les régions les plus densément peuplées à l’heure actuelle sont très souvent celles qui font preuve de la plus grande capacité de résilience et d’adaptation aux changements climatiques et environnementaux.

Author: E. G. Davy
Publisher:
ISBN: 9789263204592
Category :
Languages : fr
Pages : 318

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Category :
Languages : fr
Pages : 0

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Category : Precipitation variability
Languages : fr
Pages : 22

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Author: Deepak Gupta
Publisher: Springer Nature
ISBN: 9811925356
Category : Technology & Engineering
Languages : en
Pages : 835

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Book Description
This book includes high-quality research papers presented at the Fifth International Conference on Innovative Computing and Communication (ICICC 2022), which is held at the Shaheed Sukhdev College of Business Studies, University of Delhi, Delhi, India, on February 19–20, 2022. Introducing the innovative works of scientists, professors, research scholars, students and industrial experts in the field of computing and communication, the book promotes the transformation of fundamental research into institutional and industrialized research and the conversion of applied exploration into real-time applications.

Author: International Union for Conservation of Nature and Natural Resources. Commission on Environmental Law
Publisher: IUCN
ISBN: 9782831705248
Category : Business & Economics
Languages : en
Pages : 226

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Book Description
This is an updated edition of the 1995 version. In the mid-1980's, the IUCN CEL, in consultation with leading experts from around the world, began to respond to a need later identified by Agenda 21: the preparation of an integrated framework for international environmental law.

Author: Tor Arve Benjaminsen
Publisher: Nordic Africa Institute
ISBN: 9789171064769
Category : Business & Economics
Languages : en
Pages : 342

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Book Description
Through a number of case studies from the West African Sahel, this book links and explores natural resources management from the perspectives of politics, property and production.

Author: Mannava VK Sivakumar
Publisher: Springer Science & Business Media
ISBN: 3540446508
Category : Science
Languages : en
Pages : 319

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Book Description
Based on an International Workshop held in Geneva in 2005, this book reviews the advances made so far in seasonal climate predictions and their applications for management and decision-making in agriculture. It also identifies the challenges to be addressed in the next 5 to 10 years to further enhance operational applications of climate predictions in agriculture, especially in developing countries.

Author: Bihini won wa Musiti
Publisher: IUCN
ISBN: 2831706904
Category : Conservation of natural resources
Languages : ru
Pages : 344

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Book Description
This bilingual publication results from a four-day symposium aimed at capturing the general directions and analytical issues that characterize approaches to sustainable use in Africa. The papers included in this work are organized under four major headings: modes of use, devolution, scale issues and external issues. Authors explore these themes through the use of case studies and the description of specific regional experiences. External issues are further explored in a series of commissioned policy papers which have also been included.

Author: Mohamed Meddi
Publisher: MDPI
ISBN: 3039214314
Category : Technology & Engineering
Languages : en
Pages : 212

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Book Description
Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.