field maple (Acer campestre)

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	493	111	142	47	44	27	249	78	114	58	1042	157
number of stems %	0.6	0.1	0.2	0.1	0.0	0.0	0.2	0.0	0.2	0.1	0.2	0.0
growing stock (stemwood) 1000 m³	124	32	37	13	3	9	52	22	11	5	226	42
growing stock (stemwood) %	0.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.0
growing stock (stemwood)/number of stems m³/n	0.25	0.05	0.26	0.06	0.08	0.18	0.21	0.04	0.10	0.03	0.22	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	7	3	1	0	1	0	2	1	1	0	11	4
fellings and mortality 1000 m³/yr	3	1	0	0	0	.	0	.	0	0	4	1

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