Leaf Area and Structural Changes after Thinning in Even-Aged Picea rubens and Abies balsamea Stands in Maine, USA

Figure 3

Direction and magnitude of leaf area change by crown classes (upper and lower) for the commercial thinning types (dominant, low) and reduction levels (33% and 50%) implemented by the Cooperative Forestry Research Unit Commercial Thinning Research Network. Note. PCT—precommercial thinning history, NOPCT—no history of precommercial thinning. Crown thinning canopy level information was not collected.