宝鸡市马头滩林区锐齿槲栎天然更新影响

对宝鸡市马头滩林业局主要阔叶树种锐齿槲栎的天然更新状况进行调查,分析了不同影响因子下该树种的天然更新动态。调查结果表明, 锐齿槲栎幼苗和幼树数量影随着所在林分密度不同而不同。当林分密度逐渐增大时, 幼苗幼树的数量也增大,林分密度增加到一定数值,数量又开始减少；锐齿槲栎对坡向的要求也很严格,阳坡和阴坡有利于幼苗和幼树数量的增加,半阴坡的林分,幼苗数量减少。海拔对锐齿槲栎的天然更新影响较大,海拔逐渐增高时,幼树的数量是先增加,后逐渐减小,而幼苗密度随着海拔的增高一直在减小。

Baoji City Matoutan forest area sharp teeth mistle oak natural renewal impact

This paper investigates the natural regeneration situation of mistle oak, a main broad-leaved tree in Matoutan Forestry Bureau of Baoji City, and analyzes the natural regeneration dynamics of the tree species under different impact factors. Survey results show that the number of sharp tooth oak seedlings and saplings shadow with the density of the forest is different. When the stand density gradually increased, the number of seedlings and saplings also increased, and when the stand density increased to a certain value, the number began to decrease. Sharp teeth mistle oak on slope requirements are also very strict, sunny slope and shady slope to increase the number of seedlings and saplings, half shady slope stand, the number of seedlings to reduce. Altitude on the natural renewal of sharp teeth oak greater impact, the altitude gradually increases, the number of saplings is to increase, then gradually reduce, and seedling density with the increase of altitude has been decreasing.