Table 1.

Occupied area by dwarf bamboo in 1977 and 2009, increased area, decreased area, and rate of expansion during 32 years in the study area

Site	Area in 1977	Area in 2009	Increased	Decreased	Difference
NE site	31,217 m2	34,614 m2	15,868 m2	12,472 m2	+10.9%
SE site	21,687 m2	31,980 m2	12,544 m2	2,251 m2	+47.5%
Total	52,904 m2	66,593 m2	28,411 m2	14,723 m2	+25.9%