Plant-Ecological Significance of the Soils of the Central Orange River Basin

Abstract

Field observations made during a reconnaissance soil survey of the Central Orange River Basin for the Orange River Development Project, showed significant relationships between soil landscapes and associated vegetation. Although no intentional ecological studies were made it was clear that certain soil types (soil forms and/or series) are always associated with particular plant communities. In view of this general consistent soil-plant relationship observed in the survey area, it is reasoned that apart from climatic and topographic factors, the soil should in future be taken into consideration in defining and mapping of veld types.