THE USE OF REMOTE SENSING IN DETERMINING AREAS UNDER CULTIVATION IN THE SAHEL
We summarise the specific problems posed by the agriculture of the Sahelian countries considering remote sensing techniques. The French and American examples of setting up these techniques to estimate cultivated surfaces are then briefly analysed. The essential elements of how the agricultural space is structured are mentioned and a method of stratifying space into three levels as a sampling base, taking account of the specific situations in West African countries, is then proposed. These three levels are: 1) determination of the agricultural regions and, for each of them, of the agricultural surface used; 2) for a number of zones selected in each of the regions, characterisation and localisation of the soils and an estimate of their surface in the total agricultural surface used; 3) on the segments of each of the soils selected proportionally to their importance in the agricultural surface, establishment of a plan of enquiry, preferably setting up a plan of small lots, and investigation on the ground.
Bibliographic Reference: AMELIORATION DES PROCEDURES D'ENQUETES AGRICOLES PAR LA TELEDETECTION, NIAMEY (NIGER), JUNE 15-19, 1987 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER F 33519 ORA
Availability: Can be ordered online
Record Number: 1989126002300 / Last updated on: 1988-02-01
Available languages: fr