@article{icrisat3706,
           title = {Changes in West African Savanna agriculture in response to growing population and continuing low rainfall},
       publisher = {Elsevier},
          author = {H I D Vierich and W A Stoop},
           pages = {115--132},
            year = {1990},
          volume = {31},
         journal = {Agriculture, Ecosystems and Environment},
          number = {2},
             url = {http://oar.icrisat.org/3706/},
        abstract = {Changes in village farming systems brough about by population growth and continuing low rainfall, are described for the three main agro-ecological zones in Burkina Faso. The toposequential landuse and cropping patterns were used as the basis for a model, which describes the long-term ecological degradation from declining proportions of fallow land and over-cropping. The implications of these changes for land tenure systems have also been considered. The result provide a human and ecological setting for th current land degradation problem in the West African savanna and thereby indicate possible directions and priorities for future agricultural research.}
}