ash (Fraxinus excelsior)

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	3604	370	7046	499	4109	434	4197	460	2805	420	21760	982
number of stems %	4.4	0.4	8.3	0.6	4.3	0.4	2.5	0.3	4.0	0.6	4.4	0.2
growing stock (stemwood) 1000 m³	2934	285	6935	535	3070	323	1816	211	1144	190	15899	743
growing stock (stemwood) %	3.9	0.4	8.0	0.6	3.1	0.3	1.5	0.2	3.0	0.5	3.8	0.2
growing stock (stemwood)/number of stems m³/n	0.81	0.06	0.98	0.06	0.75	0.06	0.43	0.04	0.41	0.04	0.73	0.03

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	93	11	195	22	75	13	45	13	43	10	464	33
fellings and mortality 1000 m³/yr	77	14	153	22	40	11	22	6	11	3	315	30

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