By Mary Cherry (auth.), G. E. Wickens, J. R. Goodin, D. V. Field (eds.)
Economic vegetation were outlined through SEPASAT as these vegetation which are utilised both without delay or ultimately for the good thing about guy. oblique utilization contains the wishes of Man's cattle and the upkeep of our surroundings; the advantages will be family, advertisement or aesthetic. financial crops represent a wide and to this point uncalculated percent of the sector of one million better vegetation on the planet this present day. even though, it's been calculated that 10% (25 000) of those species at the moment are at the verge of extinction and extinction implies that a genetic source which may be of profit to guy could be misplaced for ever. additionally, for each species misplaced an envisioned 10-30 different based organisms also are doomed. Fewer than 1 according to cent of the World's vegetation were sufficiently good studied for a real assessment of the aptitude floral wealth looking ahead to discovery, not just within the rain forests, which guy is now actively destroying at a expense of 20 ha a minute, but additionally within the greatly ignored dry components of the World.
Read or Download Plants for Arid Lands: Proceedings of the Kew International Conference on Economic Plants for Arid Lands held in the Jodrell Laboratory, Royal Botanic Gardens, Kew, England, 23–27 July 1984 PDF
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Additional info for Plants for Arid Lands: Proceedings of the Kew International Conference on Economic Plants for Arid Lands held in the Jodrell Laboratory, Royal Botanic Gardens, Kew, England, 23–27 July 1984
Example text
Arid land irrigation and soil fertility: problems of salinity, alkalinity, compaction. B. ): 211-236. B. 1955. Secular changes of tropical rainfall regimes. Q. J. R. Met. Soc. 81: 138-210. J. 1982. Persistence of subsaharan drought. Nature 299: 46-48. Meigs, P. 1953. World distribution of arid and semi-arid homoclimates. In Reviews of research on arid zone hydrology. Arid Zone Programme 1: 203-210. Paris: UNESCO. Otterman, J. 1974. Baring high-albedo soils by overgrazing: a hypothesised desertification mechanism.
Beran and R. Ratcliffe (eds): 317-330. Dordrecht: Reidel. J. A. Adamson (eds) 1982. A land between two Niles. Rotterdam: Balkema. Worthington. B. ) 1977. Arid land irrigation in developing countries. Oxford: Pergamon. 3 Wi Id desert relatives of crops: their direct uses as food Gary P. Nabhan' and Richard S. Felger2 'Office of Arid Lands Studies, University of Arizona, Tucson, Arizona 85719, USA 20ffice of Arid Lands Studies and Instituto de Ecologia, Mexico City, Mexico Introduction Arid lands worldwide offer a rich variety of wild and indigenous cultivated food plants adapted to low and variable precipitation regimes.
North American deserts have a high percentage of herbs with mucilaginous seeds with great hydroscopic capacities (Young & Evans 1973). The Sonoran and other tropical-derived New World hot deserts are vegetationally and floristically rich in woody legumes with nutritionally significant seeds and pods. It is ironic that much of the modern agricultural developments in arid zones depend on temperate or tropical crop species that are not well-adapted to high heat, low soil moisture and low humidity.