Abstract
The Mediterranean region is expected to experience the greatest changes at the beginning of the 21st century. Global warming is one of the determining factors explaining the various ecosystem disturbances. The analysis of average climatic conditions, such as the rain-thermal regime at different time scales, makes it possible to understand the growing conditions of forest stands. Similarly, the estimation of the amount of water available to plants is considered an important indicator to explain the impact of climate change on the forest (dieback and extinction of species). This study addresses the climatic context and the water balance of the Batna region, which makes it possible to monitor the evolution over time of the soil’s useful water reserve in order to more precisely characterize the levels of water constraints suffered by vegetation during a period of 30 years from 1990 to 2019. The results show a particularly pronounced increase in temperature that occurred in 2001, with simultaneously a rainfall deficit of -95.99 mm and an increase in the average annual temperature of around 1°C in the east and 1.308°C in the south. This is probably the year that saw the decline of the cedar. In 2014, higher temperatures and less precipitation were observed. And the year 2017 was characterized by an increase in average maximum temperatures and a decrease in precipitation. The satisfaction of soil water demand shows the lowest satisfaction in 2001 and 2002, at only 25.88 percent and 27.72 percent.
Presenters
Amal Hassina SmaihiTeacher Researcher, Agricultural Sciences, Batna 1 University, Batna, Algeria
Details
Presentation Type
Theme
Assessing Impacts in Diverse Ecosystems
KEYWORDS
MEDITERRANEAN REGION, CLIMATE CHANGE, WATER BALANCE, EDAPHIC DROUGHT
