Forest Ecosystems

Table 1 Net present value calculated with 3% discount rate and optimal rotation length in the optimizations conducted for spruce plantation

From: Stand management optimization – the role of simplifications

Optimization problem	NPV, €/ha		Rotation length, yrs
Optimization problem	10% damage	40% damage	10% damage	40% damage
1 Low thinning max 40%	408		73
2 Free thinning max 40%	651		92
3 Free thinning no limit	845		101
4 Mixed stand	1088		88
5 Ingrowth, 3 thinnings	1137	1107	126	118
6 Ingrowth, 4 thinnings	1187	1116	128	139
7 Ingrowth, 5 thinnings	1228	1153	131	171

When ingrowth was simulated, either 10% or 40% of understorey trees were assumed to be damaged in a thinning treatment.

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