| 次生林火后演替过程中物种变化及相互关系 |
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| 引用本文： | 刘广菊,于文先,郭颖涛.次生林火后演替过程中物种变化及相互关系[J].森林工程,2008,24(4):1-5. |
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| 作者姓名： | 刘广菊 于文先 郭颖涛 |
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| 作者单位： | 1. 黑龙江省森林保护研究所,哈尔滨,150040
2. 东京城林业局苇河沟经营所,黑龙江,牡丹江,157421 |
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| 摘 要： | 采用植被空间序列代替时间系列的研究方法,分析黑河地区近20 a来不同重度火烧迹地上植被的演替变化。研究表明：火后初期,草本、灌木迅速占据火烧迹地,灌木在数量和盖度上不及草本,随着火烧年度的推移,草本、灌木在数量和盖度上逐渐减少,物种结构也发生了很大的变化,乔木在数量和盖度上呈上升趋势。研究发现,灌木、草本高频物种所占比例较高且呈上升趋势,灌木高频物种高于草本的高频物种。另外还发现不同火烧迹地上灌木物种的相似度高于草本物种相似度,相似度范围波动较大,火烧迹地上相邻年份物种的相似度高于年份相差久远物种的相似度。
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| 关 键 词： | 天然次生林 相似性系数 植被演替 火烧迹地 |
Changes of Species and Relationship in Post-fire Succession of Natural Secondary Forest |
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| Institution: | Liu Guangiu, Guo Yingtao, Yu Wenxian (1. Heilongjiang Province Forest Protection Research Institute, Harbin 150040; 2.Dongjingcheng Forest Bureau, Mudanjiang 157421 Heilongjiang Province) |
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| Abstract: | Vegetation succession and changes were analyzed in different severe burned areas of Heihe in recent 20 years. The results showed that the burned areas were occupied by herbs and shrubs which had less quantity and coverage than the herbs, As the burned time went on, with great changes in species structure, the herbs and the shrubs decreased obviously not only in quantity but also in coverage and trees increased gradually in quantity and coverage. It was also found that the ratio of high frequency shrubs and herbs were high and had an increasing tendency in the study. In addition, the similarities of the shrubs in different burned areas were higher than those of the herbs and the similarities turned volatile. The similarities of species in adjacent years were higher than those in the burned area of distant years. |
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| Keywords: | natural secondary forest similarity index vegetation succession burned area |
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