The warm-temperature zone particularly in western Japan is the suitable condition for the growth of the giant bamboo. The growth of this bamboo rapidly increased recently and makes the depressions in biodiversity, decline of secondary pine forests, and deteriorations in the landscapes and the cultural assets. Dense bamboo can restrict the light incidence beneath the canopy and especially species richness at the forest floor. The bamboo dominance or the dense of bamboo also suppressed the growth of potential dominant trees. In addition, the bamboo dominance appears to have little contribution on fine litter productivity, low soil moisture reduce litter decomposition and reduces resources in the soil and affect to the soil characteristic.
Despite in Japan, the bamboo invasion are also occurring in Southeastern Peru (Griscom, et al 2003) and Puerto Rico (O`Connor, et al. 2000). In Peru, bamboo can invade mature forest with a partial open-canopy structure resulting from wind blow-down. The presence of bamboo reduces the growth rate and survival of trees, causing arrested forest succession and persistent bamboo mono-dominance. The distribution of bamboo contracts following synchronized bamboo monocarpic flowering/die-off events. Following these events, bamboo may re-invade or trees may successfully regenerate to form a closed-canopy forest without bamboo. In Puerto Rico, bamboo and its leaves, however, clearly posses influential characteristics among forest communities and leaf inputs to streams. In Hiroshima, Japan, many ant species continued to inhabit these areas after the vegetational change caused by bamboo invasion and domination; probably because such vegetational change was neither destructive nor discontinuous (Touyama, Y., et al 1998).
We summary that the management practices on the bamboo invasion should include the suppression the violent invasion and expansion of bamboo in order to conserve ecological diversity of vegetation, habitat conditions and inhabitant fauna (Isagi et al. 1997). In addition, the educational for the treating the bamboo to the community is important for the reduction of effect of bamboo invasion, because the human activity can influence the increasing of bamboo invasion in the native forest.
1. Griscom, B. W., Ashton, P.M.S. 2003. Bamboo control of forest succession: Guadua sarcocarpa in Southeastern Peru. Forest Ecology and Management (175): 445-454.
2. O`Connor, P.J., Convich, A.P., Scatena, F.N., Loope, L.L. 2000. Non-indigenous bamboo along headwater streams of the Luquillo Mountains, Puerto Rica: leaf fall, aquatic decay and patternes of invasion. Journal of Tropical Ecology (16): 499-516.
3. Isagi, Y. Kawahara, T., Ito, H. 1997. A computer-aided management system of Phyllostachys stands based on the ecological characteristics of carbon cycling. In The bamboos. Chapman, G.P. (ed.) Academic Press, London, 125-134.
4. Touyoma, Y., Yamamoto, T., Nakagoshi, N. 1998. Myrmecofaunal change with bamboo invasion into broadleaf forests. J. For. Res. (3): 155-159