Predicting current and future suitable habitat and productivity for Atlantic populations of maritime pine (Pinus pinaster Aiton) in Spain

Table 1 Summary statistics for stand variables in the 85 research plots used to develop the productivity model

	Number of trees (ha⁻¹)	Basal area (m² ha⁻¹)	Quadratic mean diameter (cm)	Dominant height (m)	Age (years)	¹Site index (m)
Minimum	377.78	12.77	10.32	7.25	12.00	7.80
Maximum	2580.00	76.20	41.50	26.96	61.50	19.66
Mean	1183.10	37.46	21.34	14.82	25.85	12.80
Standard deviation	485.65	14.79	7.61	4.94	13.14	2.44

ISSN: 1297-966X