sessile oak (Quercus petraea)

We are sorry, the portraits of the tree species are only available in German, French and Italian.

NFI sample plots with species occurrences between 1983 and *

* An occurrence is only shown with a dot on the map if the selected tree or shrub species were detected in at least two inventories.

key figures

NFI4
state 2009/17
	production region
	Jura		Plateau		Pre-Alps		Alps		Southern Alps		Switzerland
topic (target variable)	mean	±	mean	±	mean	±	mean	±	mean	±	mean	±
number of stems 1000 n	2093	400	1390	262	59	29	839	226	1407	314	5788	616
number of stems %	2.5	0.5	1.6	0.3	0.1	0.0	0.5	0.1	2.0	0.4	1.2	0.1
growing stock (stemwood) 1000 m³	1834	289	1696	257	59	31	387	104	640	133	4615	422
growing stock (stemwood) %	2.4	0.4	2.0	0.3	0.1	0.0	0.3	0.1	1.7	0.3	1.1	0.1
growing stock (stemwood)/number of stems m³/n	0.88	0.13	1.22	0.17	1.00	0.37	0.46	0.11	0.46	0.06	0.80	0.07

The mean ± absolute standard error of the estimate is given in each case.

evaluation area: accessible forest without shrub forest

grid: 1.4 x 1.4 km grid

NFI3–NFI4
change 2004/06–2009/17
	production region
	Jura		Plateau		Pre-Alps		Alps		Southern Alps		Switzerland
topic (target variable)	mean	±	mean	±	mean	±	mean	±	mean	±	mean	±
increment (gross increment) 1000 m³/yr	33	8	33	8	1	1	5	3	19	5	93	13
fellings and mortality 1000 m³/yr	13	4	48	12	3	2	1	1	7	4	75	14

The mean ± absolute standard error of the estimate is given in each case.

evaluation area: accessible forest without shrub forest NFI3/NFI4

grid: 1.4 x 1.4 km grid