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Topic V - Mapping


Fourteen years of rangeland mapping at I.E.M.V.T.

Purpose of mapping - two-fold option
Criteria to be strictly followed in rangeland cartography
Homogeneity of presentation
Evolution of the presentation of rangeland cartography at I.E.M.V.T. over the past 14 years
Conclusions and wishes

The search for a cartographic methodology applicable to the Sahelian pasturelands

Data on the Sahel
Proposals for a methodology
Conclusions
Bibliography

Factors determining the selection of scales for pastureland maps

Introduction
The reconnaissance plan (or map) of pasturelands
The synthesis map
The inventory map
Detailed maps
Conclusions

Mapping

Classification of grassy formations by the structure of the vegetation

1. Ranking of criteria
2. Organization of classification
3. Naming of herbaceous formations
Bibliography

Review of the discussions

Techniques and cost
Contents and utilization
Training

Under the Chairmanship of Mr. SORA ADI, Southern Rangelands Project Manager, Ministry of Agriculture, Ethiopia.

5.1. Transcription of data from aerial photographs to base maps.

5.2. Cartographic conventions, i.e. aridity, vegetation, land form, soil, etc.

5.3. Form of presentation.

5.4. Choice of scale.

Chairman: SORA ADI
Rapporteur: E. TRUMP
Discussion leader: G. BOUDET

COMMUNICATIONS:

G. LAMARQUE; C. CAZABAT; G. DE WISPELAERE; A. BLAIR RAINS; B. DESCOINGS.


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