Environmental factors controlling the distribution of forest plants with special reference to floral mixture in the boreo-nemoral ecotone, Hokkaido Island 森林植物の分布と環境要因、特に北海道の森林フロラの混在様式に関する生態学的研究
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Bibliographic Information
- Title
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Environmental factors controlling the distribution of forest plants with special reference to floral mixture in the boreo-nemoral ecotone, Hokkaido Island
- Other Title
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森林植物の分布と環境要因、特に北海道の森林フロラの混在様式に関する生態学的研究
- Author
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植村, 滋
- Author(Another name)
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ウエムラ, シゲル
- University
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北海道大学
- Types of degree
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環境科学博士
- Grant ID
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甲第3111号
- Degree year
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1992-06-30
Note and Description
博士論文
Effects of climatic factors on the plant distribution were examined by means of direct gradient analysis, and the relationship of forest flora, life form and phytogeographical distribution was examined. Subsequently, leaf phenology of forest plants were analyzed to evaluate the adaptive significance in relation to the environments in forest understory. In the boreo-nemoral forest ecotone, Hokkaido Island, northern Japan, co-ccurrence of northern and southern plants in a certain forest site is more notable in the understory than in the crown, and this dates back to the late-uaternary period, where the decrease in temperature associated with the glacial period forced the understory flora to adapt their life form or leaf habits to snowcover and light conditions of the interior forests.
Table of Contents
- CONTENTS / p1 (0003.jp2)
- INTRODUCTION / p4 (0006.jp2)
- AREAS STUDIED / p9 (0011.jp2)
- 1.Hokkaido Island,northern Japan / p9 (0011.jp2)
- 2.Chubu District,central Japan / p11 (0013.jp2)
- METHODS / p13 (0015.jp2)
- 1.Direct gradient analysis of climatic preference / p13 (0015.jp2)
- 2.Co-occurrence of northern and southern plants / p16 (0018.jp2)
- 3.Leaf phenology of forest plants / p16 (0018.jp2)
- TERMINOLOGY / p20 (0022.jp2)
- RESULTS / p21 (0023.jp2)
- 1.Climatic preference of forest plants in central Japan / p21 (0023.jp2)
- 2.Climatic preferences of Hokkaido forest plants / p26 (0028.jp2)
- 3.Floral-mixture in forest ecosystems of Hokkaido / p31 (0033.jp2)
- 4.Leaf habits as adaptive strategies in forest understory / p33 (0035.jp2)
- DISCUSSION / p40 (0042.jp2)
- Effects of snow on the plants' distribution and speciation / p40 (0042.jp2)
- Modal shifts of climatic preference / p43 (0045.jp2)
- Co-occurrence process of northern and southern plants / p44 (0046.jp2)
- Leaf habits as adaptive strategies in forest understory / p46 (0048.jp2)
- Leaf phenology as a key factor facilitating the floral mixture in boreo-nemoral ecotone / p50 (0052.jp2)
- SUMMARY / p53 (0055.jp2)
- ACKNOWLEDGEMENTS / p56 (0058.jp2)
- REFERENCES / p57 (0059.jp2)
- TABLES / p1 (0066.jp2)
- FIGURES / p1 (0084.jp2)
- APPENDIX / p1 (0104.jp2)