| 长白山林线交错带形状与木本植物向苔原侵展和林线动态的关系 |
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| 引用本文： | 石培礼,李文华.长白山林线交错带形状与木本植物向苔原侵展和林线动态的关系[J].生态学报,2000,20(4):573-580. |
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| 作者姓名： | 石培礼 李文华 |
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| 作者单位： | 中国科学院自然资源综合考察委员会,北京,100101 |
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| 基金项目： | 中国科学院长白山森林生态系统定位站开放基金，国家自然科学基金!(399000 24)资助项目 |
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| 摘 要： | 采用样带调查法测定了长白山岳桦林缘形状对入侵苔原木本植物和分布，树木生长和死亡的影响，阐述了林缘形状形成与生境小气候的关系，探讨了不同形状林缘更新格局形成的原因和林线的动态，林缘入侵物种主要由岳桦和东北赤杨组成。凹型林缘外入侵权地木向苔原侵展的距离和茎数，以及平均基径，基面积主平均高度均明显高一直线型和凸型林缘，其中凸型林缘的值最低，且锭离林缘降低最为迅速，随远离林缘入侵植株枯梢率增高分枝数增殖，
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| 关 键 词： | 长白山 岳桦林 林缘形状 更新 苔原带 林线动态 |
| 收稿时间： | 9/8/1998 12:00:00 AM |
| 修稿时间： | 1999/9/13 0:00:00 |
Boundary form effects of timberline ecotone on colonization of woody plants and timberline dynamics in Changbai Mountain |
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| SHI Peili and LI Wenhua.Boundary form effects of timberline ecotone on colonization of woody plants and timberline dynamics in Changbai Mountain[J].Acta Ecologica Sinica,2000,20(4):573-580. |
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| Authors: | SHI Peili and LI Wenhua |
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| Institution: | Commission for Integrated Survey of Natural Resources; the Chinese Academy of Sciences; Beijing 100101 |
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| Abstract: | With transect sampling,effects of forest boundary forms on specie composition and its distribution and on growth and death of colonizing woody plants were measured at the birch forest tundra ecotone in Changbai Mountain,Northeastern China.The boundary microclimate relative to forest boundary forms,causes of colonizing patterns,and timberline dynamics were also studied. Betula ermanii and Alnus mandshurica predominated in the colonizing woody species on forest boundaries.In general,transects facing c... |
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| Keywords: | Changbai Mountain Betula ermanii timberline boundary form regeneration colonization tundra timberline dynamics |
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