@techreport{oai:soar-ir.repo.nii.ac.jp:00016696, author = {佐藤, 利幸 and 遠藤, 隼 and 鈴木, 啓助 and 戸田, 任重 and 島野, 光司 and 鈴木, 和次郎 and 金指, あや子}, month = {Mar}, note = {Scale determination for nature restoration projects of endangered plants was estimated by the similarity trajectory of pteridophytes composition and freequency from point to regional scales. Species composition and freequency were surveyed and compared among some concentric circle regions仕omthe site of Acer pycnanthum trees which relict at Iyari and Bitchubara in Shinshu. In the range of 10・20km企omthe center the floristic similarity was decreased,a nd the gradual decrease was found on frequencywith distance. The two marsh of Iyari (Ohmachi) and Bitchubara (Achi) consist of sphagnum species (two common and two different mountain species) and of some floristic elements of pteridophytes. Such sites with rare or relic species seem permit coexistence of multiple floristic elements., Article, 環境科学年報27:61-73(2005)}, title = {信州ハナノキ自生地から周辺域へのシダ植物構成・頻度類似性の軌跡:希少樹種更新への自然再生事業スケールを予測する}, year = {2005} }