Salinity 照片檔

Aerial view of marginal farmland in western New South Wales, Australia. Drought conditions prevail in this semi-arid district where wheat and cotton are grown commercially over large tracts of plain lands transformed by irrigation. Dry river beds are seen in the upper half of photo with large meanders and dried out ox-bow lakes. Large perennial rivers only flow following heavy rains, usually in the summer months. Salinity of farmlands from widespread vegetation clearing and over-irrigation is an environmental issue in these areas.