Assessing the Population Status of a Tree Species Using Distance Sampling: Aquilaria crassna (Thymelaeaceae) in Northern Laos

Table 2

Percentage of all detected felled trees with roots dug out, signs of agarwood formation, stumps with coppice, and felled in 2004 and before. Mean diameter of detected standing and felled trees. All figures plus/minus approximate standard errors. Felling year was not assessed for all felled trees.

		Per cent of felled trees detected ± Standard error					Diameter at breast height (cm)
Site	𝑛	With roots dug out	With signs of agarwood formation	Stumps with coppice	Felled in 2004	Felled prior to 2004	Standing trees (height ≥ 2 m)	Felled trees
1	18	5.6±5.6	27.8±10.9	44.4±12.1	33.3±11.4	44.4±12.1	10.7±0.5	32.1±4.4
2	36	69.4±7.8	83.3±6.3	8.3±4.7	5.6±3.9	91.7±4.7	3.6±0.3	13.8±3.2
3	32	37.5±8.7	68.8±8.3	31.3±8.3	9.4±5.2	90.6±5.2	5.7±0.2	31.4±3.6
4	65	1.5±1.5	12.3±4.1	75.4±5.4	96.9±2.2	3.1±2.2	4.5±0.3	25.2±1.5
All	151	25.8±3.6	43.0±4.0	46.4±4.1	49.0±4.1	47.7±4.1	6.6±0.2	25.6±1.4