The use of geographical information systems and image processing techniques for the analysis of aerial photographs and vegetation survey data in African dry-woodland research

acacia acacia tortilis aerial surveying canopy cartografia cartographie cartography case studies classification computer software couvert cubierta de copas dynamique des populations encuestas evaluation fotografia geographical information systems global positioning systems image processing imagerie imagery logiciel mapping natural regeneration photographie photography population dynamics programas de ordenador surveys vegetation woodlands