Recovery of Vegetation Structure and Species Diversity after Shifting Cultivation in Northwestern Vietnam, with Special Reference to Commercially Valuable Tree Species

Table 2

Commercial species presence in 32-year-old fallow stand and in old-growth forest.

	Thirty-two-year-old fallow stand (FS)		Old-growth forest (OGF)
	Commercial species	Proportion to all species (%)	Commercial species	Proportion to all species (%)	^aPercent recovery in FS
Species number	12	37.5	34	45.9	35.3
Tree stratum; (stems ha^−1)	217	40.2	347	63.1	62.5
Sapling stratum (stems ha^−1)	270	23.2	320	34.9	84.4
Seedling stratum (stems ha^−1)	1,420	37.3	2,170	35.1	65.4
Total density (stems ha^−1)	1,907	36.6	2,837	37.6	67.2
Basal area (m^2 ha^−1)	5.6	39.2	21.4	80.1	26.2

^aPercent recovery is defined as the number of commercial species found in FS stand, divided by that in OGF forest.