摘要
为探讨野生平榛快速恢复途径及天然更新规律,通过松土、挖穴、除杂、调整密度及人工围封措施,开展野生平榛榛丛萌蘖和实生恢复更新特征研究。结果表明:通过人工促进措施可加速野生平榛恢复与扩展的进程,松土翻整、疏松土壤可使榛丛根茎径向扩展距离较对照年均提高42.4%,其中,5.7株/m^(2)密度提高幅度最大,达45.2%;其次为2.9株/m^(2)密度,为43.3%;8.8株/m^(2)密度最小,为38.6%。而对实生更新影响较小,规律性也不强;野生平榛榛丛天然实生更新的规律为以鼠类活动能力半径20~30 m为实生苗更新密集区的空间更新特征。其规律符合更新苗株数与距榛丛距离关系模型为Y=0.6944X^(3)-9.881X^(2)+39.139X-28,相关系数R^(2)=0.915,从而揭示出野生平榛实生天然更新呈群团状向周边扩散格局的机制。
In order to explore the rapid recovery path and natural regeneration rule of wild hazel hazel,the Hazel bush Finer tillering and Biological renewal characteristics of wild hazel hazel were studied by means of soil loosening,burrows digging,impurity removal,density adjustment and artificial enclosure.The results show that Artificial promotion measures can accelerate the recovery and expansion of wild hazel,Compared with the control,the radial extension distance of hazel bush roots could be increased by 42.4%.The density of 5.7 plants/m^(2) increased by 45.2%,followed by 2.9 plants/m^(2)(43.3%)and 8.8 plants/m^(2)(38.6%).However,it has little effect on the Biological renewal and the regularity is not strong;The law of natural regeneration of wild hazelnut bush is the spatial regeneration characteristic of dense regeneration area of seedling with the radius of Mouse activity of 20~30 m.The correlation coefficient R^(2)=0.915 was consistent with the model of Y=0.6944X^(3)-9.881X^(2)+39.139X-28,the relationship between the number of new plants and the distance from the hazel bush,which revealed the mechanism of natural regeneration of wild hazel in a cluster pattern.
作者
王力刚
崔琳
张玉柱
WANG Ligang;CUI Lin;ZHANG Yuzhu(Qiqihar Branch of Heilongjiang Academy of Forestry,National Permanent Scientific Research Base on Shelter Forest in Nenjiang Plain,Heilongjiang Qiqihar 161005)
出处
《林业科技》
2025年第1期21-23,58,共4页
Forestry Science & Technology
关键词
野生平榛
人工促进恢复
围封
更新规律
wild hazel
artificially facilitated recovery
enclosure
renewal rule
