子午岭油松林林窗生态更新研究  

Ecological Regeneration of Pinus tabulaeformis Forest in Gaps in Ziwu Mountains

作　　者：杨君珑[1] 王辉[2] 王彬[3] 

机构地区：[1]宁夏大学农学院,宁夏银川750021 [2]甘肃农业大学林学院,甘肃兰州730000 [3]青海大学农林科学院,青海西宁810016

出　　处：《青海农林科技》2008年第4期6-9,45,共5页Science and Technology of Qinghai Agriculture and Forestry

基　　金：国家重点基础研究发展规划项目"西部典型区域森林植被对农业生态环境的调控机理"资助;项目编号:2002CB111505

摘　　要：通过对子午岭油松纯林林窗及非林窗内更新树种数量特征的调查分析结果表明:林窗环境下更新树种的数量特征(高度、基径、数量)与重要值均高于非林窗环境;林窗内的油松幼苗年龄结构表明其处于稳定生长阶段;不同面积大小的林窗与重要值具有正相关性;油松幼苗在林窗中的重要值(1.958)要明显高于非林窗(0.780),说明油松幼苗在中小型林窗中具有良好适应性,适应性要高于非林窗环境。The quantitative character of regenerating tree species in gaps and non-gaps of Pinus tabulaeformis forest in Ziwu Mountains was surveyed and analyzed. The results showed that the quantitative character（ height, diameter, number）and important value in gaps were higher than that in non-gaps. Furthermore, the age structure of pine seedlings shows they are in the stage of steady growth. The important value shows it has the positive relationship with important value. Analysis on the different gaps area shows that the pines have the better adaptation in small and middle gaps. The value of IV in gaps （ 1. 958 ） was obviously higher than in non-gaps （0. 780 ） , which indicated the pine were more adaptable in gaps environment than other areas.

关 键 词：林窗 生态更新 油松林 数量特征 

分 类 号：S754[农业科学—森林经理学]