- 藤原道郎・伊藤休一. 2013. 淡路島における現存植生図を基にした竹林の面積, 分布および傾斜に関する予察的研究. Hikobia 16: 393-xxx. [Fujihara, M. & Ito, K. 2013. A preliminary study on the area, distribution, and inclination of bamboo forests on the basis of the actual vegetation map of Awaji Island, Hyogo Prefecture. Hikobia 16: 393-xxx.]
Fujihara, M. & Ito, K. 2013. A preliminary study on the area, distribution, and inclination of bamboo forests on the basis of the actual vegetation map of Awaji Island, Hyogo Prefecture. Hikobia 16: 393-xxx. (in Japanese with English abstract)
Bamboo forests mainly consisting of Phyllostachys pubescens and P. bambusoides are important landscape elements in rural parts of Japan. P. pubescens was intentionally introduced into Japan from China. Bamboo culms and young shoots were considered as important natural resources. However, there has been a reduction in the use of bamboo, and most bamboo forests have now been abandoned. The expansion of these abandoned forests has resulted in drastic changes in vegetation in Japan. In this study, the distribution, area and environmental factors (minimum, maximum, and average inclination) of bamboo forests in Awaji Island, western Japan, were investigated to provide fundamental information for management strategy of bamboo forests. The distribution of bamboo patches across Awaji Island was determined using vegetation maps from 2010 (1/25,000: Ministry of the Environment). The inclination of each 10-m grid was obtained using a 10-m resolution Digital Elevation Model. The inclination of each bamboo patch was then calculated using Geographic Information System software (ArcGIS ver.9). In total, there were 1,314 bamboo patches, covering a total area of 26.6 km2 or 4.5% of Awaji Island. There were 51.2, 32.8, and 16.2% total number of bamboo patches in Awaji, Sumoto, and Minamiawaji cities, respectively. Compared to the southern part of Awaji Island, the northern part contained bamboo patches frequently distributed at low to high altitudes and gentle to steep slopes. Small patches were abundant and 972 patches (74.0%) grew on an average inclination of 10–25°. More than 92.0% of bamboo patches were found at a minimum inclination of 0–10°.