TAILIEUCHUNG - Báo cáo lâm nghiệp: "Effects of extending rotation period on plant species diversity in Larix kaempferi plantations in central Japan"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: Effects of extending rotation period on plant species diversity in Larix kaempferi plantations in central Japan. | Ann. For. Sci. 61 2004 197-202 197 INRA EDP Sciences 2004 DOI forest 2004012 Original article Effects of extending rotation period on plant species diversity in Larix kaempferi plantations in central Japan Takuo Nagaike Atsuko Hayashi Yamanashi Forest Research Institute Masuho Yamanashi 400-0502 Japan Received 11 December 2002 accepted 14 April 2003 Abstract - We compared the plant species diversity of forest-floor vegetation in long-rotation Larix kaempferi plantations with standardrotation plantations and abandoned coppice forest in central Japan. Species diversity and richness did not differ between the standard- and long-rotation plantations. However the composition of tall-tree species of different seed-dispersal types in long-rotation plantations differed from that in standard-rotation plantations but was similar to that in abandoned coppice forest. These results indicate that in particular long-rotation plantations contained more tall-tree species with animal-dispersed seeds which in turn suggests that long-rotation plantations may be better for colonization of tall-tree species with this type of seed dispersal. The relatively long period since management in long-rotation plantations may play a significant role in the growth reproduction and seedfall of naturally regenerated tall-tree species with animal-dispersed seeds. Therefore long-rotation plantations may maintain and restore species composition via recovering ecological function. forest ecosystem management seed dispersal species classification life form Résumé - Effets de l allongement de la période de rotation des plantations de Larix kaempferi au centre du Japon sur la diversité en espèces végétales. Nous avons comparé la diversité en espèces végétales du sous bois entre des plantations de Larix kaempferi menées en rotations longues par rapport à des rotations classiques courtes ou des taillis abandonnés. La diversité et la richesse en espèces végétales ne diffèrent pas entre les plantations

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