Aeolian Accumulation of Organic and Inorganic Sediments in a Semi-Arid Watershed in the Northern Negev Desert, Israel
In arid and semi-arid regions, aeolian particle input is one of the major sources for soil development. The aim of this study was to investigate the total aeolian accumulation and the temporal and spatial distribution of the inorganic and organic components, in a semi-arid environment of the northern Negev desert. For five years, we measured the total aeolian accumulation and its components in a watershed, under a 200-mm annual average rainfall regime. Maximum annual aeolian accumulation was recorded during the third year (358 g m-2) and the lowest was in the first year (33 g m-2). Maximum seasonal accumulation was measured in winter and the minimum in summer. The lowest amount was measured in July. Across the watershed, highest and most significant quantities of total aeolian accumulation were measured in two locations: wadi and south-facing slope.
Keywords: Aeolian particles, Inorganic and organic matter, Soil genesis, Dust, Morphoclimatical, Semiarid
Dr Eli Zaady
Gilat Research Center, Agriculture Research Organization, Ministry of Agriculture
Prof' Zvi Offer
Professor, Department of Environmental Physics, Ben-Gurion University of the Negev