| 试论火与兴安落叶松种子发芽条件的关系 |
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| 引用本文： | 单建平,徐振邦.试论火与兴安落叶松种子发芽条件的关系[J].林业科学,1990,26(6):545-549. |
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| 作者姓名： | 单建平 徐振邦 |
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| 作者单位： | 中国科学院沈阳应用生态研究所，中国科学院沈阳应用生态研究所，中国科学院沈阳应用生态研究所 |
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| 摘 要： | 兴安落叶松(Larix gmelinii)自然分布区大兴安岭的立地条件和种子发芽条件的特殊性,导致了兴安落叶松天然更新的特殊性。瘠薄的棕色针叶林土,生长季短、冬季漫长以及土壤表层较厚的死地被物层增加了天然更新的难度。然而兴安落叶松的天然更新效果却是令人满意的。兴安落叶松在母树林冠下更新良好,只是在某些林型如草类落叶松林的成熟林冠下更新不良;而在3—10年的择伐迹地和火烧迹地上平均每公顷有13500株幼树。大兴安岭地区兴安落叶松火烧迹地天然更新良好的奥秘何在?火灾后兴安落叶松的种子发芽条件如何?火灾在这方面的作用是什么?作者从天然更新的关键之一——种子
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| 关 键 词： | 兴安落叶松 种子 发芽 火 天然更新 |
FIRE AND THE SEED GERMINATION OF LIRIX GMELINII |
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| Shan Jianping Xu Zhenbang Tao Dali.FIRE AND THE SEED GERMINATION OF LIRIX GMELINII[J].Scientia Silvae Sinicae,1990,26(6):545-549. |
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| Authors: | Shan Jianping Xu Zhenbang Tao Dali |
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| Abstract: | Sampling sites were selected at both burned and unburned stands of Larix gmelinii at Tuqiang Forest Bureau, Da Xingan Ling. The impluence of litter layer or living ground cover on germination of larch seeds and the role of fire in it were investigated in 1988. Significantly negative effect of litter layer or living ground cover on seed germination was fourd, and which can be remitted by fire as a result of removing the litter layer. Another reason was the charcoal produced by fire, which can improve the seed germination conditions to promote germination of Larix gmelinii. In conclusion, fire was a favorable factor for natural regeneration of L. gmelinii in Da Xingan an Ling. |
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| Keywords: | Charcoal Fire Germination L gmelinii Natural regeneration |
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