Dr. Yahia is a land degradation expert, specializing in plant-microbe interactions and their applications in floriculture, forestry, rangeland management, and ecological restoration. With extensive experience in remote sensing, GIS, and land degradation assessment, his work focuses on enhancing plant health, growth, and resilience through microbial symbiosis. Dr. Yahia expertise also extends to the physiological and postharvest quality of floriculture crops, the use of native plant species in landscape restoration, and sustainable rangeland and forestry management.