Teak (Tectona grandis Linn. f) and Edaphic Factors Affecting the Regeneration of Woody Species and Their Functional Traits in Economic Forest Plantation, Northern Thailand

Table 5

Ecological characteristics of teak plantation and old-growth forest plots in Khun Mae Khum Mee plantation.

Ecological characteristics	10-year-old	20-year-old	30-year-old	40-year-old	Old-growth forest
Number of species	42	21	47	27	40
Genus	36	17	38	25	35
Family	21	8	21	12	19
H'	2.41	1.56	2.75	2.12	2.72
D (stem ha^−1)	1008	570	883	683	698
BA (m^2 ha^−1)	12.75	17.81	17.31	22.73	21.82