| 中强度火烧对兴安落叶松林自然更新的影响 |
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| 引用本文： | 李慧仁,王立中,韦昌雷,刘学爽,胡林林.中强度火烧对兴安落叶松林自然更新的影响[J].防护林科技,2016(9):47-48. |
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| 作者姓名： | 李慧仁 王立中 韦昌雷 刘学爽 胡林林 |
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| 作者单位： | 大兴安岭林业集团公司农业林业科学研究院，黑龙江嫩江源森林生态系统国家定位观测研究站，黑龙江 大兴安岭 165000 |
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| 摘 要： | 通过对中强度火烧迹地内兴安落叶松自自然更新情况的调查研究,结果表明:中度火烧后,由于地被覆盖率的降低,增加了落叶松种子和土壤接触的机会,促进了兴安落叶松的自然更新。火烧后3年,落叶松自然更新数量达到2 350株·hm~(-2);火烧后6年达到4 572株·hm~(-2);火烧后9年,落叶松自然更新数量达到5 650株·hm~(-2)。而对照样地中,落叶松自然更新数量分别为1 550株·hm~(-2)、1 760株·hm~(-2)、1 435株·hm~(-2),远小于火烧迹地自然更新数量。通过采取适当的计划烧除措施可以促进落叶松的自然更新,有利于林分稳定、生物多样性保护及生态系统恢复。
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| 关 键 词： | 中强度火烧 兴安落叶松 自然更新 |
Effect of Medium Strength Burning on Natural Regeneration of Larix gmelinii Plantation |
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| Abstract: | Natural regeneration of Larix gmelinii in the fire slash with medium strength were studied.Result shows that the contacting chances of seeds of larch with soil were increased after moderate burning due to reduction of cov-erage ratio.Three years after the fire,the number of natural regeneration for larch reaches 2 350 trees·hm-2 .Six years after the fire reaches 4 572 trees·hm-2 .Nine years after the fire,the number of natural regeneration for larch reaches 5 650 trees·hm-2 .While still in the contrast plot,the number of natural regeneration for larch are 1 550 trees·hm-2 ,1760 trees·hm-2 ,1 435 trees·hm-2 ,far less than the number of Burned natural regeneration.Ap-propriate measures can not only promote natural regeneration of larch,but also promote stabitity of stand,conserva-tion of biodiversity and restoration of ecosystem. |
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| Keywords: | medium burning Larix gmelinii natural regeneration |
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