| 杉桤混交效果及机理分析 |
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| 引用本文： | 徐清乾,许忠坤,荣建平.杉桤混交效果及机理分析[J].湖北林业科技,2008(6). |
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| 作者姓名： | 徐清乾 许忠坤 荣建平 |
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| 作者单位： | 1. 湖南省林业科学院,长沙,410004
2. 湖南省攸县林科所,株洲,412300 |
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| 基金项目： | 国家科技支撑计划湖南杉木遗传育种与定向培育技术
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湖南省科技厅重点项目优质纸浆材新品种选育
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| 摘 要： | 对20a生杉木、桤木混交林丰产效果和机理进行研究,结果表明:混交林内桤木自然保存率低于杉木;杉木单株材积、单位面积材积分别大于桤木4.44和28.1。混交林下生物量是纯林的2.41倍,且植被种类、覆盖率及高度都显著大于纯林。混交林提高了土壤的透水和透气性能,土壤中有机质含量和主要营养元素含量均有所提高。杉木、桤木光饱和点、光补偿点有明显的差异,两树种混交对利用自然阳光有相互补充的作用。
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| 关 键 词： | 杉木 桤木 混交林 效果 机理 |
Research on Effects and Mechanism of Mixed Forest with Cunninghamia lanceoiata(Lamb.) Hook. and Alnus cremastogyne Burk |
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| Xu Qingqian Xu Zhongkun Rong Jianping.Research on Effects and Mechanism of Mixed Forest with Cunninghamia lanceoiata(Lamb.) Hook. and Alnus cremastogyne Burk[J].Hubei Forestry Science and Technology,2008(6). |
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| Authors: | Xu Qingqian Xu Zhongkun Rong Jianping |
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| Institution: | Xu Qingqian(1) Xu Zhongkun(1) Rong Jianping(2)(1.Hunan Academy of Forestry Changsha 410004,2.Youxian County Forestry Research Institute in Hunan Province Zhuzhou 412300) |
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| Abstract: | The study is carried out on high-yield effects and mechanism of the 20-year-old Cunninghamia lanceoiata(Lamb.) Hook.and Alnus cremastogyne Burk mixed forests.The result shows that survival percentages of Aluns cremastogyne Burk is lower than Cunninghamia lanceoiata(Lamb.) Hook.in the mixed forests;the volume of individual plant and the volume of unit area of Cunninghamia lanceoiata(Lamb.) Hook.are separately more 4.44% and 28.1% than that of Aluns cremastogyne Burk.Biomass distribution which is below the mi... |
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| Keywords: | Cunninghamia lanceoiata(Lamb ) Hook Alnus cremastogyne Burk mixed stands effects mechanism |
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