| 不同人工林林下幼苗更新特性研究 |
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| 作者姓名： | 覃爱华 |
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| 作者单位： | 广西环江毛南族自治县华山林场 |
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| 摘 要： | 目的]探究阔叶混交林的更新特性。方法]对红椎纯林、马尾松纯林、红椎+马尾松同龄混交林、红椎+马尾松异龄混交林4种林分设置固定样地进行幼苗更新研究。结果]红锥与马尾松同龄混交林下幼苗物种数量及个体数均远高于各自的纯林及异龄混交林分;各林分自然更新显示物种数、个体数稀少特征;固定幼苗样方分析表明,红椎纯林和同龄混交林幼苗在不同坡位差异显著,而马尾松纯林和异龄混交林幼苗的个体数在不同坡位差异不显著;间伐因素对同龄混交林和异龄混交林的幼苗物种数影响显著,去除凋落物能显著增加红椎纯林和同龄混交林林下幼苗的物种数。结论]结果为阔叶混交林的培育和更新研究提供了参考。
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| 关 键 词： | 人工林 红椎 马尾松 混交 林下更新 |
Study on Regeneration Characteristics of Seedlings under Different Plantations |
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| Authors: | QIN Ai-hua |
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| Institution: | (Huashan Forest Farm,Huanjiang Maonan Autonomous County,Guangxi 547100) |
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| Abstract: | Objective]To explore the regeneration characteristics of broadleaved mixed forest.Method]The seedling regeneration of four kinds of stands,namely,Castanopsis hystrix pure forest,Pinus massoniana pure forest,Castanopsis hystrix+Pinus massoniana mixed forest of the same age and Castanopsis hystrix+Pinus massoniana mixed forest of different age,were studied.Result]The number of species and individuals of seedlings in the same age mixed forest of Castanopsis hystrix and Pinus massoniana were much higher than those in the pure forest and different age mixed forest.The natural regeneration of each stand showed the characteristics of rare species and individuals.Fixed seedling quadrat analysis showed that there were significant differences in seedling number at different slope positions between the Castanopsis hystrix pure forest and the mixed forest at the same age,but there was no significant difference in seedling number at different slope positions between the Pinus massoniana pure forest and the mixed forest at different age;thinning factors had a significant effect on the seedling species number of the mixed forest at the same age and the mixed forest at the same age,and litter removal could significantly increase the species number of seedlings under the Castanopsis hystrix pure forest and the mixed forest at the same age Count.Conclusion]The results provide a reference for the cultivation and regeneration of broadleaved mixed forest. |
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| Keywords: | Plantation Castanopsis hystrix Pinus massoniana Mixed Regeneration |
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