central Mali, these areas are linked to the annual growth of natural vegetation. This growth is different to the
south, in the middle and to the north of the delta. The fight against locusts in this region can thus be efficient
only if it is based on a good map of vegetation growth stages. After a survey mission on the spot in 1970, FAO
decided to compile such a map on a 1:50,000 scale by the photointerpretation of a double aerial coverage
(panchromatic black and white infrared) taken at different times and taking propagation and decrease into
consideration. The period chosen was from January to March, 1971, and the survey was made from south to
north of the delta. This paper describes the main features of the map and presents a fragment.
22. Maruyasu, T.
Nakamura, H.
Fuchimoto, M.
Japan
EXISTING AERIAL PHOTOS FOR LAND USE ANALYSIS
Abstract not provided.
23. Maruyasu, T.
Murai, S.
Japan
TOPOGRAPHIC INFORMATION PROCESSING
SYSTEM IN CIVIL ENGINEERING
Abstract not provided.
24. McEwen, R.B.
United States
IS REMOTE SENSING OPERATIONAL?
Abstract not provided.
25. Mike, S.
Hungary
THE FUNCTION OF THE AERIAL PHOTOGRAPH IN THE LARGE
SCALE SOIL MAPPING
The growing needs make the regional survey more intensive for the exploration of the biological resources and
the continuous control of them. This is necessary in the developing, and in the undeveloped countries alike,
even then when they possess considerable survey results.
The soil survey is an important part of the regional exploration. Some authors state that aerial photographs
are only applied to the medium and small scale soil mapping adequately, since the photographic interpretation
cannot fulfill the requirements of the large scale soil survey, because the necessary details cannot be seen on
the aerial photographs. Should things be so, and the aerial photographic interpretation is useful only at small
and medium scales, which fulfills the developing nation’s requirements only, it cannot be considered as a
method of universal validity.
The researches accomplished within the frame of the experimental program of soil survey and classification
of our country, demonstrated that the aerial photographic interpretation is suitable for the large scale soil
survey. We were carrying out parallel land surveys on a different landscape of our country, partly applying the
aerial photo interpretation method, partly the field survey. The result has given the proof, that by the
application of the system of complex land analysis, depending on the nature of slopes, on the geomorphologic
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