Elements of a functional definition of oligotroph humus based on the nitrogen nutrition of forest stands.

Published online
01 Jan 1973
Content type
Journal article
Journal title
Journal of Applied Ecology

Praag, H. J. van & Weissen, F.

Publication language


Describes a study of the oligotrophic humus of sols brun acides under forest in the Belgian Ardennes [cf. FA 30, 5110; 33, 1896]. Three incubation techniques were used to measure the net N mineralization in soil from under native Beech and planted Spruce stands. It is concluded that moder can be distinguished from mor by the net rate of N mineralization. In the case of moder, however, the quality of the site and efficiency of N nutrition are not necessarily related to N availability. The concept of absorbing power is discussed in this connexion.

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