辽东栎实生苗天然更新特征及其影响因子  

Natural Regeneration Characteristics and Influencing Factors of Quercus liaotungensis Seedlings

作　　者：李青辉 LI Qinghui(Shanxi Academy of Forestry and Grassland Sciences,Shanxi 030012,Taiyuan;Taiyuan Urban Ecosystem Observation and Research Station,Shanxi 030012,Taiyuan)

机构地区：[1]山西省林业和草原科学研究院,山西太原030012 [2]山西太原城市生态系统国家定位观测研究站,山西太原030012

出　　处：《温带林业研究》2025年第1期58-62,共5页Journal of Temperate Forestry Research

基　　金：“基于水分平衡的黄土高原水土保持植被高质量发展与功能可持续技术研究”(2022YFE0104700);山西省回国留学人员科研资助项目“德国近自然林业经营理念在晋试验研究”(2020-163)。

摘　　要：【目的】探讨辽东栎实生苗天然更新特征及其影响因子。【方法】通过对山西省太行山区辽东栎实生苗天然更新区域的实地调查,分析了不同坡向、坡位及微生境因子对辽东栎实生幼苗和幼树分布的影响。【结果】坡向、坡位对辽东栎实生苗的天然更新有显著影响。其中,阴坡的更新数量和生长平均高度明显高于阳坡;坡上和坡中的更新效果优于坡下。微生境因子对辽东栎的天然更新有显著影响。其中适度遮阴、枯落物厚度薄、土壤厚度中厚、阳坡上的邻株距离大和草本盖度适度能促进辽东栎实生苗的生长。【结论】坡向、坡位和微生境因子中的遮阴等级、枯落物厚度、土壤厚度、邻株距离和草本盖度等因子在辽东栎实生苗天然更新过程中扮演了重要角色。【Objective】To explore the natural regeneration characteristics and influencing factors of Quercus liaotungensis seedlings.【Method】The effects of different slope direction,slope position and microhabitat factors on the distribution of seedlings and saplings of Quercus liaotungensis were analyzed through field investigation of natural regeneration area of Quercus liaotungensis in Taihang Mountains of Shanxi Province.【Result】Slope direction and slope position had significant effects on the natural regeneration of Quercus liaotungensis seedlings.Among them,the regeneration number and average growth height of the negative slope are obviously higher than that of the positive slope.The upslope and middle slope regeneration effect is better than that under slope.The microhabitat factors had significant influence on the natural regeneration of Quercus liaotungensis.Among them,moderate shade,thin litter thickness,medium soil thickness,large neighbor plants distance on sunny slope and moderate herb coverage could promote the growth of seedling of Quercus liaotungensis.【Conclusion】Shade grade,litter thickness,soil thickness,neighbor distance and herb coverage among slope direction,slope position and microhabitat factors played an important role in the natural regeneration process of Quercus liaotungensis seedlings.

关 键 词：辽东栎 实生苗 天然更新 影响因子 

分 类 号：S792.8[农业科学—林木遗传育种]