Table 3.

Description of the study sites (mean annual precipitation, altitude, age and number of the trees, past land use, G = basal area, SV = days with a daily mean temperature > 5,8 °C, Ellenberg N = indicator of N availability). Sites in bold and with * belongs to the network of sub-sites with continuous monitoring of soil solution chemistry, soil humidity and litterfall.

Site	Code	Precipitation (mm per year)	Altitude (m)	SV (days)	Age (years)	Trees per ha	G (m2 ha−1)	Ellenberg (N)	Past land use
Adinfert	ADI	681	117	208	37	374	34	4.2	Coniferous Forest (CF)
Allagnat*	ALL*	917	1005	133	68	211	53	6.0	Deciduous forest or heather (DF)
Bouillancourt	BOU	780	146	211	43	368	28	4.3	Coniferous Forest (CF)
Wailly*	CONT*	706	111	208	42	204	36	6.1	Coniferous Forest (CF)
Verreries de Moussans	DOU34	1150	685	221	41	416	46	5.6	Coniferous Forest (CF)
Gaillefontaine*	GAI*	888	232	208	32	230	39	5.4	Farmland (pasture or field) (FL)
Meymac*	MEY*	1125	916	152	51	200	18	2.7	Deciduous forest or heather (DF)
Azy-le-Vif	MIG	730	302	152	38	278	14	5.9	Coniferous Forest (CF)
Montapas*	MONT*	996	288	153	46	472	36	6.9	Coniferous Forest (CF)
Olliergues*	OLL*	1030	643	185	31	450	37	6.2	Farmland (pasture or field) (FL)
Pérols sur Vézère*	ORL-T*	1326	840	162	48	429	46	2.5	Deciduous forest or heather (DF)
Pérols sur Vézère*	ORL-F*	1326	841	162	48	425	52	4.5	Deciduous forest or heather (DF)
Anglès*	PAU*	1424	802	176	41	300	39	7.0	Farmland (pasture or field) (FL)
Saint Amans le Petit	PEY-T	1250	586	172	43	1333	53	4.5	Deciduous forest or heather (DF)
Saint Amans le Petit	PEY-ESC	1250	586	172	43	285	40	4.5	Deciduous forest or heather (DF)
Le Bez	PIQ	1000	649	184	73	217	51	6.2	Coniferous Forest (CF)
Montreuil en Auge*	ROQ*	788	79	222	40	304	42	5.6	Coniferous Forest (CF)
Sallèdes	SAL-B	680	743	201	42	388	36	4.8	Coniferous Forest (CF)
Sallèdes	SAL-H	720	817	196	42	353	33	4.2	Coniferous Forest (CF)
Felleries*	VIL*	822	195	213	40	338	41	4.6	Coniferous Forest (CF)
Ceyssat	VULC	900	959	134	71	201	53	5.7	Deciduous forest or heather (DF)