black locust (Robinia pseudoacacia)

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	217	126	152	82	0	.	107	65	781	253	1256	301
number of stems %	0.3	0.2	0.2	0.1	0.0	.	0.1	0.0	1.1	0.4	0.3	0.1
growing stock (stemwood) 1000 m³	258	230	40	25	0	.	21	12	204	80	523	245
growing stock (stemwood) %	0.3	0.3	0.0	0.0	0.0	.	0.0	0.0	0.5	0.2	0.1	0.1
growing stock (stemwood)/number of stems m³/n	1.19	0.68	0.26	0.13	0.00	.	0.20	0.03	0.26	0.05	0.42	0.16

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	4	3	2	2	0	.	1	1	9	4	16	5
fellings and mortality 1000 m³/yr	3	2	0	.	0	.	0	.	10	4	13	4

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