摘要
通过对树龄、胸径、树高、胸高皮厚、叶柄长、叶宽和叶长等性状聚类的相关系数矩阵分析,确定胸高皮厚与叶柄长作为栓皮栎天然类型划分的指标,将陕西省分布的栓皮栎天然类型划分为长柄厚皮型、短柄厚皮型、长柄薄皮型、短柄薄皮型等四个类型,其中短柄厚皮型在栓皮栎群体中所占比例最大,占整个群体的34.44%,巴山北坡、黄龙山区主要以短柄厚皮型为主,秦岭北坡以长柄厚皮型为主。
Quercus variabilis is a kind of energy source trees which has a widespread distribution area and is also one of the major regional trees of the warm temperate zone below altitude 1 600 meters in China. The Q. variabilis populations in Shaanxi Province are different from each other at the forms and growths because of the diversity of the climate and soil conditions in the region. Through the proximity matrix of age, diameter, height, bark thickness, length of petiole and width of leaf, the bark thickness and length of petiole were chosen as the main indices. The natural types of Q. variabilis were divided into the long-petiolethick-bark type, the short-petiole-thick-bark type, the long-petiole-thin-bark type and the short-petiolethin-bark type. The short-petiole-thick-bark type was at a largest proportion within the populations. On the northern slope of Bashan Mountains and the Huanglong Mountains, the short-petiole-thick-bark type was at a large proportion and the long-petiole-thick-bark type was at a large proportion on the northern slope of Qinling Mountains.
出处
《西北林学院学报》
CSCD
北大核心
2009年第1期16-19,共4页
Journal of Northwest Forestry University
基金
国家自然科学基金项目(30740059)
中科院科学院西部行动计划项目(KZCX2-XB2-05)
国家"十一五"科技支撑项目(2006BAD09B03)
关键词
栓皮栎
天然类型
划分
陕西
Quercus variabilis
natural type
classification
Shaanxi Province
