宝鸡市马头滩林区锐齿槲栎天然更新影响因子调查

Investigation on Influencing Factors of Natural Regeneration of Quercus aliena var.acutiserrata in Matoutan Forest Area of Baoji City

本研究对宝鸡市马头滩林区主要阔叶树种锐齿槲栎的天然更新状况进行了调查,分析了不同影响因子对该树种天然更新的影响。结果表明:随着锐齿槲栎林分密度的增大,幼苗的更新密度先增大后减小,幼树的更新密度整体上呈减小趋势;阳坡幼苗和幼树的更新密度均最大,阴坡幼苗的更新密度较大;海拔对锐齿槲栎的天然更新影响较大,随着海拔的增高,幼树的更新密度先增大后减小,而幼苗的更新密度整体上呈减小趋势。

In this study,the natural regeneration situation of Quercus aliena var.acutiserrata,a main broadleaved tree species,in Matoutan forest area of Baoji City was investigated,and the natural regeneration dynamics of the tree species under different influencing factors were analyzed.The results showed that with the increase of the stand density of Quercus aliena var.acutiserrata,the regeneration density of seedlings increased first and then decreased,and the regeneration density of young trees generally showed a decreasing trend.The regeneration density of seedlings and young trees on sunny slope were both the highest,and that of seedlings on shady slope was higher.Altitude had a great impact on the natural regeneration of Quercus aliena var.acutiserrata.With the increase of altitude,the regeneration density of young trees increased first and then decreased,while the regeneration density of seedlings generally showed a decreasing trend.