| 林隙微生境及更新研究进展 |
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| 引用本文： | 宋新章,肖文发.林隙微生境及更新研究进展[J].林业科学,2006,42(5):114-119. |
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| 作者姓名： | 宋新章 肖文发 |
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| 作者单位： | 中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京,100091 |
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| 摘 要： | 系统评述了国内外关于林隙干扰及更新的最新研究进展.林隙是一种经常发生的小规模干扰,是森林群落时空格局变化的驱动力.不同的林隙干扰状况导致了林隙内光照的差异,进一步造成林隙内温度、湿度、土壤理化性质的变化,形成了微生境的时空异质性.林隙干扰通过改变微生境而对幼苗的出土、存活、定居和生长产生重要影响.林隙内种子库的物种丰富度变化很大,是幼苗分布格局的重要影响因子.更新幼苗的存活率和生长量受林隙大小及幼苗在林隙中位置的影响.指出了这一领域今后的研究方向.
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| 关 键 词： | 林隙 微生境 更新 林隙干扰 幼苗 |
| 文章编号： | 1001-7488(2006)05-0114-06 |
| 收稿时间： | 2005-06-07 |
| 修稿时间： | 2005年6月7日 |
Research Advances of Microsites and Regeneration within Canopy Gap |
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| Song Xinzhang,Xiao Wenfa.Research Advances of Microsites and Regeneration within Canopy Gap[J].Scientia Silvae Sinicae,2006,42(5):114-119. |
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| Authors: | Song Xinzhang Xiao Wenfa |
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| Institution: | Institute of Forest Ecology, Environment and Protection, CAF Key Laboratory of Forest Ecology and Environment, State Forestry Administration Beijing 100091 |
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| Abstract: | The latest research advances on microsites and regeneration within canopy gap were systemically reviewed. The death of overstory trees creates gaps in forest canopies. As a kind of frequent small-scale disturbance, these canopy gaps make a positive impact on forests, including enhancing species diversity, getting the driver of temporal and spatial pattern variety. Disturbance firstly beget the difference of light within gap, further induce the change of temperature, humidity and soil character, finally result in temporal and spatial heterogeneity of microsites within gap. Gap disturbance have important effects on the emergence, survival, establishment and growth of seedling within gap through affecting microsites. The variety of species richness in seedband within gap is large, which is a important factor determining the distribute of seedlings. The seedling survival probability and seedling growth rates vary with the canopy opening size and seedling distance to gap edge. In the end of this paper, the near future development and the questions still need to be studied in detail were put forward. |
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| Keywords: | canopy gap microsites regeneration gap disturbance seedling |
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