| 新疆额尔齐斯河流域杨树幼苗天然更新影响因子分析 |
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| 引用本文： | 白志强,刘华,张新平,刘端,郭仲军.新疆额尔齐斯河流域杨树幼苗天然更新影响因子分析[J].西北林学院学报,2011,26(1):98-102. |
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| 作者姓名： | 白志强 刘华 张新平 刘端 郭仲军 |
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| 作者单位： | 1. 新疆林业科学院生态研究所,新疆,乌鲁木齐,830001
2. 安徽农业大学林学与园林学院,安徽,合肥,230036 |
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| 基金项目： | 国家“十一五”林业科技支撑项目(2006BAD03A04-03-05); 安徽农业大学稳定和引进人才项目(yj2008-4) |
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| 摘 要： | 为了解该流域杨树天然更新与环境因子之间的关系,对额尔齐斯河流域(北屯段)天然杨树中主要优势树种的落种、萌发及幼苗天然更新与林内腐殖质层厚度、枯落物厚度、土壤有机质含量、林龄、平均胸径、平均树高等因子进行了调查和分析。结果表明:①额河流域天然杨树的平均落种数为3 900粒.m-2,自然落种及散播期与洪水发生期是高度重叠的;②天然落种和种子萌发与洪水发生期也是相互重叠;③相关分析结果表明,在影响幼苗天然更新的7个因子中,幼苗天然更新株数与其林下的腐殖质层厚度、林分郁闭度和枯落物层厚度具有显著的相关性;其中,幼苗更新株数与郁闭度呈显著的负相关,与腐殖质层厚度和枯落物层厚度呈显著的正相关,它们在其更新中的作用大小顺序依次为腐殖质层厚度>郁闭度>枯落物层厚度;其余因子与幼苗更新株数的相关性程度不高。
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| 关 键 词： | 额尔齐斯河 天然杨树林 幼苗更新 因子分析 |
Analysis on Influence Factors of Natural Regeneration of Young Poplar Seedlings in Irtysh River Basin,Xinjiang |
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| BAI Zhi-qiang,LIU Hua,ZHANG Xin-ping,LIU Duan,GUO Zhong-jun.Analysis on Influence Factors of Natural Regeneration of Young Poplar Seedlings in Irtysh River Basin,Xinjiang[J].Journal of Northwest Forestry University,2011,26(1):98-102. |
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| Authors: | BAI Zhi-qiang LIU Hua ZHANG Xin-ping LIU Duan GUO Zhong-jun |
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| Institution: | BAI Zhi-qiang1,LIU Hua2,ZHANG Xin-ping1,LIU Duan1,GUO Zhong-jun1(1.Institute of Forest Ecology,Xinjiang Academy of Forestry,Urumqi,Xinjiang 830001,China,2.School of Forestry & Landscape Architecture,Anhui Agricultural University,Hefei,Anhui 230036,China) |
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| Abstract: | The riparian forest along the Irtysh River basin in Xinjiang,Northwest of China was regarded as an important gene pool for plants in the family Salicaceae.In order to know the relationships between seedling natural regeneration and environments,the main dominate species in growing season including Populus nigra,P.jrtyschensis,P.alba,P.canescens and P.laurifolia,and some influencing factors such as seed drop and sprouting time,humus layer thickness in forest,litter,soil organic matter,age,DBH,mean height wer... |
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| Keywords: | Irtysh River basin natural popular forest seedling regeneration factor analysis |
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