KAMADA Mahito Tokushima Pref.Museum, Curator, 学芸員
OKAHASHI Hidenori Fac.Litereture, Ass.Professor, 文学部, 助教授 (00150540)
NAKAGOSHI Nobukazu Integrated Art & Sci.,Ass.Prof., 総合科学部, 助教授 (50188918)
|Budget Amount *help
¥2,400,000 (Direct Cost : ¥2,400,000)
Fiscal Year 1992 : ¥800,000 (Direct Cost : ¥800,000)
Fiscal Year 1991 : ¥1,600,000 (Direct Cost : ¥1,600,000)
In southwestern Japan, pine forests have been connected strongly with daily life and agriculture. Changes in management regimes invariably result in an alteration in vegetation landscape.
This study is done to elucidate socially and economically induced changes in the landscape pattern in terms of spatial distribution and structure of vegetation of Chiyoda-cho, Miwa-cho, Kake-cho, Kurahashi-cho and Shimokamagari-cho, Hiroshima Pref. and Iya-areas, Tokushima Pref. In Shimokamagari-cho, for instance, relationships between social and economic change, site conditions and the vegetation were examined from a historical perspective. In the process of economic development, mandarin orange production became important on this island. But, over-production, a reduction in the price of mandarin oranges and low-temperature damage to orange trees caused large citrus orchards to be abandoned. As to pine forests, medium and small forests became tall ones and these changed into tall oak forests. In the human-dominated areas, the major factors affecting the process of vegetation were economic activities, and after the abandonment of the farm-lands, forest succession were controlled by natural site conditions.