L' indice de competition interindividuelle de Schutz | The Schutz index of competition between individual trees
1997
Ung, C.H. | Raulier, F. | Ouellet, D. | Dhote, J.F.
Schutz index is a distance-dependent competition index that evaluates the tree growth by taking into account both the horizontal (distance between crown radii) and vertical competition (height difference). Relative to most of the distance-dependent indices, Schutz index considers crown radius instead of diameter at breast height. Two black spruce stands of regular and irregular structure are chosen to analyze the behaviour and the performance of the index. Relative to Arney and Monserud-Ek indices that also use crown radius, Schutz index satisfyingly estimates basal area and volume increments. The horizontal component of the index, however, is not indispensable for estimating height increment. Because of its particular formulation, Schutz index is highly convenient for determining competitor trees in forest.
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