PLANTS FOR ARID LANDS

Opis produktu

Economic plants have been defined by SEPASAT as those plants that are utilised either directly or indirectly for the benefit of Man. Indirect usage includes the needs of Mans livestock and the maintenance of the environment: the benefits may be domestic commercial or aesthetic. Economic plants constitute a large and so far uncalculated percentage of the quarter of a million higher plants in the World today. However it has been calculated that 10% (25 000) of these species are now on the verge of extinction and extinction means that a genetic resource that could be of benefit to Man will be lost for ever. Furthermore for every species lost an estimated 1030 other dependent organisms are also doomed. Fewer than 1 per cent of the Worlds plants have been sufficiently well studied for a true evaluation of the potential floral wealth awaiting discovery not only in the rain forests which man is now actively destroying at a rate of 20 ha a minute but also in the very much neglected dry areEconomic plants have been defined by SEPASAT as those plants that are utilised either directly or indirectly for the benefit of Man. Indirect usage includes the needs of Mans livestock and the maintenance of the environment: the benefits may be domestic commercial or aesthetic. Economic plants constitute a large and so far uncalculated percentage of the quarter of a million higher plants in the World today. However it has been calculated that 10% (25 000) of these species are now on the verge of extinction and extinction means that a genetic resource that could be of benefit to Man will be lost for ever. Furthermore for every species lost an estimated 1030 other dependent organisms are also doomed. Fewer than 1 per cent of the Worlds plants have been sufficiently well studied for a true evaluation of the potential floral wealth awaiting discovery not only in the rain forests which man is now actively destroying at a rate of 20 ha a minute but also in the very much neglected dry areBackground. 1. The needs of the people. 2. The arid environment. Food. 3. Wild desert relatives of crops: their direct uses as food. 4. Crops for arid lands. 5. The nutritional composition of Australian Aboriginal food plants of the desert regions. 6. Khoisan Food plants: taxa with potential for future economic exploitation. 7. Food plants of prehistoric and predynastic Egypt. Timber Fuel and Forage. 8. Place and role of trees and shrubs in dry areas. 9. Prosopis tamarugo in the Chilean Atacama ecophysiological and reforestation aspects. 10. Forage and fuel plants in the arid zone of North Africa the Near and Middle East. 11. Forage and browse the northern Australian experience. 12. Bees and honey in the exploitation of arid land resources. Plants for the Environment. 13. Economic halophytes a global review. 14. Present and potential economic usages of palms in arid and semiarid areas. 15. Plants for conservation of soil and water in arid ecosystems. 16. Nitrogen fixation in arid e

Wymiary: 718 gr 155 mm 235 mm