Land-use and climate change effects in forest compositional trajectories in a dry Central-Alpine valley

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Table III

Comparison of mean changes in tree species proportion between stands not affected by anthropogenic disturbances and stands under various anthropogenic disturbance regimes (Wilcoxon test). Included in the analysis are stands below 1200 m a.s.l. having a pine proportion in 1930 of ≥ 20%. Values are given in mean changes in percentage between 1930 and 1994.

	No such	Intensity of		Intensity of		Intensities
	use	wood pasture		litter collecting		combined

		High	Low	High	Low	High	Low
# Compartments	46	21	24	13	14	11	12
Pines	–13.6	–14.4	–21.6^*	–13.7	–17	–3.9	–20.1
Deciduous trees	+12.6	+10.8	+11.7	+4.5^**	+6.2^*	+1.2^**	+7.1

Wilcoxon test significance:

p < 0.01

^**

p < 0.005