Effects of Species Mixture on Tree and Stand Growth

Abstract

In this chapter we analyse how tree species diversity and forest productivity are interrelated, a question of particular relevance to forestry practice. The methods presented concentrate on mixed stands consisting of two species. The analysis of the production of a mixed stand is usually carried out in relation to the production of corresponding pure stands at the same site. The benefits of species interactions that enhance mixed-stand growth are of particular interest in this context. A series of mixed and adjacent pure stands of Norway spruce and European beech is analysed to demonstrate the options for detecting species interactions.