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  • In selected test areas the development of land use, especially of arable land, and the present-day situation of vegetation cover, soil degradation and erosion were analysed by field work and the use of panchromatic air photographs. At least the area
  • 1991
  • are the eroded steep slopes and especially small channels which drain catchment areas under a dense vegetation cover. The main effect of catastrophic high floods is a high rate of lateral and vertical erosion in the river bed which in this region has not been
  • 1991