Rapport Sur Les Ressources En Sols Du Monde
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Base de Référence Mondiale Pour Les Ressources en Sols
Author | : Food and Agriculture Organization of the United Nations |
Publisher | : Food & Agriculture Org. |
Total Pages | : 112 |
Release | : 1999-05-30 |
Genre | : Business & Economics |
ISBN | : 9789252041412 |
Cette publication constitue un manuel technique destine aux pedologues et autres chercheurs appliquant la science du sol. Proposant un systeme de reference unique, elle facilitera les echanges d'information pedologiques. La publication contient les definitions et les criteres diagnostiques pour decrire les differents horizons des sols, et propose une classification pour delimiter les sous-divisions des groupes de sols de reference reconnus."
FAOUNESCO carte mondiale des sols. Legende revisee
Author | : |
Publisher | : Food & Agriculture Org. |
Total Pages | : 0 |
Release | : 1989 |
Genre | : Soil surveys |
ISBN | : 9789252026228 |
Soils as a Key Component of the Critical Zone 5
Author | : Christian Valentin |
Publisher | : John Wiley & Sons |
Total Pages | : 276 |
Release | : 2019-02-06 |
Genre | : Science |
ISBN | : 1786302195 |
One third of the world's soils have already been degraded. The burden on the land continues to grow under the combined pressures of demography, urbanization, artificialization and mining, and there are increased demands on agricultural land: changing dietary preferences, land speculation, as well as new demands for agroenergy, fiber, green chemistry, and more. Resulting issues such as soil crusting, water and wind erosion, soil salinization and soil acidity therefore constitute a major threat. The authors of this book present the main processes and factors of soil degradation, different ways to prevent it and methods of rehabilitation. The book also deals with the origin and processes of metallic and organic soil pollution as well as methods of phytoremediation and restoration. It is one of the few books to explore the issue of soil artificialization and urban soil management and to highlight how agricultural and urban waste can be used to amend and fertilize cultivated soils.
Bioclimatology and Biogeography of Africa
Author | : Henry N. Houérou |
Publisher | : Springer Science & Business Media |
Total Pages | : 252 |
Release | : 2008-12-10 |
Genre | : Science |
ISBN | : 3540851925 |
Covering an area of over 130 million km2 spanning the Mediterranean, equator and tropics, the African continent features a spectacular geographic diversity. Consequently, it is characterised by extremely variable climatic, edaphic and ecological conditions, associated with a wide range of natural vegetation and wildlife, as well as human population density, crops and livestock. In this book, Henry Le Houérou presents his bioclimatic and biogeographic classification of Africa. The extensive data provide the basis for comparisons between various African regions, and with regions on other continents such as Latin America or the Indian subcontinent. The results constitute a rational basis for national, regional and sub-regional rural development planning, and for agricultural research dealing with aspects such as plant and animal introductions, the extrapolation or interpolation of experimental or developmental findings, and ecosystems dynamics. Possible problems of applications are also examined.