مرکز منطقه ای اطلاع رساني علوم و فناوري - The Possible Effects Of Drought On Natural Pastures

Abstract :

Agricultural production in a region, depending on soil conditions, climate and plant species is being shaped triangle, plant species that can be grown in the region and ecological conditions, especially climatic factors are significant determinants of the region on the productivity of this species. The drought is defined as lower rainfall values than the long-term average precipitation values, the water restriction that results from drought have negative effects on human, animal and plant vegetation. As well as the reduction in yield, species composition of the vegetation, canopy coverage and forage quality is also affected negatively due to drought. The majority of our rangelands are located in East and Central Anatolian regions considered as arid or semi-arid because in these regions annual total rainfall is low and rainfall distribution is irregular. In such areas, prolonged drought, the production of rangeland decreases significantly. In addition to drought, untimely and heavy grazing in the pasture can cause to come into a situation that cannot be evaluated animal grazing of rangelands. So rearrangement of grazing practices in during dry periods is important for the maintenance of pasture vegetation.