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  • Erosion of plant genetic resources : causes and effects
  • Special issue. Agriculture - systems - landscapes - resources
  • of erosion of crop genetic resources.
  • Special issue. Agriculture - systems - landscapes - resources
  • Agriculture ; Agro-écosystème ; Analyse du paysage ; Burkina ; Danemark ; Domaine aride ; Gestion des ressources ; Jylland ; Niger ; Utilisation du sol ; Variation spatiale
  • Agriculture ; Agroecosystem ; Arid area ; Burkina ; Denmark ; Jylland ; Land use ; Landscape analysis ; Niger ; Resource management ; Spatial variation
  • way of decoding spatial messages and translating them into information about the dynamics of the agricultural resource management strategies. Selected cases from different agroecological environments, in Denmark, Burkina Faso and Niger, are presented.
  • Special issue. Agriculture - systems - landscapes - resources
  • This paper aims at assessing the present state of satellite remote sensing assessment of crop yields in the Sahel in the supprot of economic planing as well as natural resource management at a national level. Experiences from Senegal have shown
  • Special issue. Agriculture - systems - landscapes - resources
  • resource database, a classification of the land use changes in the period 1979-1989 and 1994 was conducted using air photos and satellite images. Finally the land use change was analysed using a geographical information system. The produced maps create
  • Special issue. Agriculture - systems - landscapes - resources
  • Special issue. Agriculture - systems - landscapes - resources
  • Special issue. Agriculture - systems - landscapes - resources
  • Special issue. Agriculture - systems - landscapes - resources
  • Special issue. Agriculture - systems - landscapes - resources
  • Special issue. Agriculture - systems - landscapes - resources
  • Special issue. Agriculture - systems - landscapes - resources