Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Egypte → MANAGEMENT SYSTEM OF NEW IMPROVED RANGE AREAS OF NORTH WESTERN COAST TO CONTROL DESERTIFICATION

Ain Shams University (1997)

MANAGEMENT SYSTEM OF NEW IMPROVED RANGE AREAS OF NORTH WESTERN COAST TO CONTROL DESERTIFICATION

El-Toukhy, Salwa Ali Mohamed

Titre : MANAGEMENT SYSTEM OF NEW IMPROVED RANGE AREAS OF NORTH WESTERN COAST TO CONTROL DESERTIFICATION

Auteur : El-Toukhy, Salwa Ali Mohamed

Etablissement de soutenance : Ain Shams University

Grade : Doctor of Philosophy (PhD) in Environmental Science 1997

Résumé
Arid and semi-arid regions account for about 30% of the total global land surface, and could contribute significantly to agricultural production had the constraints limiting the production level were removed. Traditionally, the greater part of these regions were used for extensive grazing, tmder a varying degree of nomadism. However, sedentation of the nomadic population, introduction of mechanization callowing the cultivation of vast marginal areas, and the construction of water harvesting and management structure have engendered the evaluation of many farming systems in these regions. This evaluational process was good on some areas, but it has been ofharmful, or damaging, effect on the bio-physical equilibrimn of environment on other areas, leading to resource degradation and desertification. The North western coastal zone of Egypt, with its long history of intensive land-sue of mainly grazing and rainfed fanning provides a clear example of the impact of man’s disruptive action on arid and semi-arid regions. It is well known that this region has the most favourable moisture regime and best biological potential of all Et,ryptian deserts. Continued uncontrolled grazing, wood cutting and fanning of natural range and marginal lands have, however induced a process of degradation. This is coupled with severe environment, uncertain and en-atic rainfall, and a change in socio-economic circumstances, has resulted in an advanced stage of desertification. As a result, the region now is producing at a rate less than its potential, and is continuing to lose the productivity it had. Among other measures, improvement of the degradated areas, can be achieved through revegetation by more ecologically adapted vegetation types, (such as Acacia saligna, Atriplex nummularia, etc.), annual forages and improved management system. This investigation was designed to evaluate the optimum management system which can be followed to improve range areas in the north western coast of Egypt by determing the optimum herbacious plant species to be cultivated under the shrubs already planted in the area. And, to determine the optimum fertilization systems which can be adapted for these types of agroforestry range areas, and the optimum methods of clipping or grazing system for these areas in relation to get optimum production of forage and animal production per unit area.

Présentation étendue (EULC)

Page publiée le 21 février 2019