Predicting stand age in managed forests using National Forest Inventory field data and airborne laser scanning

Forest Ecosystems

Table 2 Summary of the airborne laser scanning data available at each site

Area	Year	Scanner	Point density (m⁻²)	Height accuracy (m)	Flight altitude (m)
Ähtäri	2013	Optech ALTM GEMINI	0.7	0.15	1730
Heinävesi	2017	Riegl LM-7800	1.5	0.15	1870
Juva	2016	Leica ALS 60	0.88	0.15	2400
Kemiö	2017	Leica ALS 60	0.7	0.15	2000
Kuhmo	2014	Leica ALS 60	1.33	0.15	2150
Kyrönmaa	2016	Leica ALS 80 HP	1.55	0.15	2000
Orimattila	2016	Leica ALS 60	0.5	0.15	2500
Sodankylä	2015	Optech ALTM_Gemini	0.7	0.15	1890
Suomussalmi	2017	Riegl LM-7800	1.5	0.15	1700
Ylitornio	2015	Optech ALTM_Gemini	0.8	0.15	1600