ABSTRACT
Vegetation itself is an excellent product to protect soil against erosion. Sometimes however, for instance if erosive forces are to large or when vegetation is to be developed under difficult conditions, this protection may be insufficient. Three dimensional synthetic mats are used on dikes and banks as a reinforcement of vegetation to increase the erosion resistance. In many cases they enable the construction of low-cost protection with high environmental value in stead of more traditional revetments consisting of ’hard’ materials.
