Abstract: Sandy terrains are fixed against displacement by the wind of the sandy soil using at least one non-woven textile filament network. Erosion of the soil is thereby prevented or at least significantly reduced. The network is preferably formed from a tow of artificial or synthetic textiles in the form of continuous threads which are separated first into locks which are fixedly positioned in the ground and then the locks are separated or opened to form a regular or irregular open network.Application of the non-woven network for fixing the surface soil of sandy zones prevents erosion and improves the planting and development of vegetation and crops.