Contribution of Synthetic Resin Emulsion in Sand Dune Stabilization and Vegetation Growth

Abstract

A similitude model of a sand dune was erected at the Agricultural Research and Education Center of the United Arab Emirates University. The model was used to study the contribution of synthetic resin emulsion spray on dune stabilization and vegetation growth. Dune stabilization was studied in terms of control of shifting sand and effect on topographic changes. Vegetative growth was assessed using transplanted trees of two locally adapted species:(Samar ; Acacia tortilis, Ghaf: Prosopis spicigera) and three local shrubs:(Rims ; Hammada elegans, Arta ; Calligonum comosum, Markh ; Leptadenia pyrotechnica). Transplanting was done just before emulsion application at a density of 2000 plants per hector. Vegetation height and crown area in 6 quadrates were measured. Shifting sand at the top of dune was controlled and little topographic change was recognized in all measured points after spraying the emulsion. Vegetation grew well on the top of the dune and crown interference was observed 20 months after transplanting. Shrubs protected trees from strong aeolian activities due to their initial rapid growth. Deformation and destruction of the emulsion's crust were not observed within the 20 months period after its spraying. The use of synthetic resin emulsion along with the establishment of a vegetative belt provided a practical and effective method for sand dune stabilization in the United Arab Emirates. This study was carried as part of the joint study project between the Faculty of Agricultural sciences, United Arab Emirates University and the Faculty of Agriculture, Shizuoka University on “Improvement of arid land agriculture in the United Arab Emirates” under the technical cooperation program by Japan International Cooperation Agency.