Ancient forest statistics provide centennial perspective over the status and dynamics of forest area in France

Table 1 Description of variables found in ancient forest statistics and national forest inventory

Statistics	Data resolution	Tree species	Forest area split by
Statistics	Data resolution	Tree species	Ownership category	Forest management type (or structure type for NFI data)
Decennial agricultural statistics (1892)	86 NUTS-3	─	MPBNS	SC / CWS / HBF / HCF
			PNS	SC / CWS / HBF / HCF
			MPBS	SC / CC / CWS / HF/ DPUD
			SFS	SC / CC / CWS / HF/ DPUD
German statistics (1907) for Bas-Rhin, Haut-Rhin and Moselle units	3 NUTS-3 (Bas-Rhin, Haut-Rhin and Moselle)	─	M	─
			P	─
			SFS	─
Daubrée statistics (1908)	86 NUTS-3, LAU-1 and arrondissements of Paris	15 main tree species and two tree species botanic class (various broadleaves and various conifers)	MPBNS	SC / CC / CWS / HF / UA
			MPBS	SC / CC / CWS / HF / UA
			PNS	SC / CC / CWS / HF / UA
			SFS	SC / CC / CWS / HF / UA
Decennial agricultural statistics (1929)	89 NUTS-3	─	MNS	SC / CWS / HBF / HCF / RF
			MPBNS	SC / CWS / HBF / HCF / RF
			PBNS	SC / CWS / HBF / HCF / RF
			PNS	SC / CWS / HBF / HCF / RF
			S	SC / CWS / HBF / HCF / RF
NFI (2008¹)	90 NUTS-3	70 tree species	M	C / MCHF / EAHF / UAHF / NS
			P	C / MCHF / EAHF / UAHF / NS
			SF	C / MCHF / EAHF / UAHF / NS

─: not available variables. ¹median year
Ownership categories: S forests subjected to the forest regime, SF state-owned forests, SFS state-owned forests subjected to the forest regime, M municipal forests (and other territorial public bodies’ forests), MPBS municipal forests and other territorial public bodies’ forests subjected to the forest regime, MNS: municipal forests not subjected to the forest regime, MPBNS municipal forests and other territorial public bodies’ forests not subjected to the forest regime, PBNS other territorial public bodies’ forests not subjected to the forest regime, P private forests, PNS private forests not subjected to the forest regime. Forest management types: C coppice, SC simple coppice, CC coppice conversion (into high forest), CWS coppice-with-standards, MCHF mixture of coppice and high-forest, HF high forest, HBF high broadleaved dominated forest, HCF, high coniferous dominated forest, EAHF, even-aged high forest, UAHF uneven-aged high forest, DPUD decreed perimeters and unproductive coastal dunes, RF: recently afforested forest area, UA unproductive area

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