| 林窗与凋落物对人工云杉林早期更新的影响 |
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| 引用本文： | 胡蓉,林波,刘庆.林窗与凋落物对人工云杉林早期更新的影响[J].林业科学,2011,47(6). |
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| 作者姓名： | 胡蓉 林波 刘庆 |
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| 作者单位： | 中国科学院成都生物研究所 成都610041;中国科学院研究生院 北京100049;中国科学院山地生态恢复和资源利用重点实验室 成都610041 |
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| 基金项目： | 国家自然科学基金项目(30800161)、国家自然科学基金重点项目(30530630); 中国科学院知识创新工程“西部行动计划”项目(KZCX2-XB2-02)、中国科学院知识创新工程重要方向项目(KSCX2-YW-N-066-03); “西部之光”人才计划“西部博士项目” |
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| 摘 要： | 为阐明林窗和凋落物对云杉人工林更新的作用,在川西米亚罗人工云杉林制造林窗(40m2)。通过对林窗环境因子进行动态监测,并跟踪调查天然下种、人工播种和去凋落物播种3种方式的云杉种子萌发和幼苗存活情况,以及进行云杉凋落物水浸液对其种子萌发及根、茎生长影响的室内观察,对林窗与凋落物对云杉种子萌发和幼苗存活的影响进行研究。结果表明:林窗环境具有异质性;林窗位置以及播种方式对种子萌发和幼苗存活都有影响,天然下种(2.75株·m-2)和去凋落物播种(21.25株·m-2)均在林窗中心幼苗萌发数量最多,人工播种(10.75株·m-2)在林窗边缘种子萌发数量多;靠近林窗中心位置幼苗死亡率略低;3种播种方式以天然下种种子萌发数量最少,去凋落物播种最多。云杉凋落物水浸液对其种子萌发和幼苗生长均有显著抑制作用,对根和茎生长的抑制率分别是68.62%和66.39%。初步认为,林窗有利于森林更新;可采取人工播种措施促进更新;凋落物对云杉人工林更新产生不利影响。
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| 关 键 词： | 人工云杉林 林窗 凋落物 环境因子 种子萌发 幼苗死亡率 |
Effects of Forest Gaps and Litter on the Early Regeneration of Picea asperata Plantations |
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| Hu Rong,Lin Bo,Liu Qing.Effects of Forest Gaps and Litter on the Early Regeneration of Picea asperata Plantations[J].Scientia Silvae Sinicae,2011,47(6). |
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| Authors: | Hu Rong Lin Bo Liu Qing |
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| Institution: | Hu Rong1,2,3 Lin Bo1,3 Liu Qing1,3 (1. Chengdu Institute of Biology,Chinese Academy of Sciences Chengdu 610041,2. Graduate University of Chinese Academy of Sciences Beijing 100049,3. Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization,Chinese Academy of Sciences Chengdu 610041) |
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| Abstract: | Forest gaps and litter are two important factors which have influence on forest regeneration. Forest gaps(40 m2) were artificially created in spruce plantations in Miyaluo, Western Sichuan. In this paper, changes in environmental factors were monitored, and germination and survival of the seedlings were measured to test the effects of natural seeding and artificial seeding, as well as wiping out litter on germination and growth of seedlings. This paper also determined the effects of plantation litter aqueou... |
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| Keywords: | spruce plantation forest gap litter environmental factor germination seedling mortality |
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