柞树天然次生林龄级与立地因子关系  

Relationship Between Age Grade and Site Factors of Oak Natural Secondary Forest

作　　者：董阳 Dong Yang(Hebei Forestry and Grassland Technology Extension Station,Shijiazhuang 050000,Hebei)

机构地区：[1]河北省林业和草原技术推广总站,河北石家庄050000

出　　处：《防护林科技》2022年第3期50-52,共3页Protection Forest Science and Technology

基　　金：河北省重点研发计划项目“河北太行山‘白茬山’植被修复关键技术研究与示范”(20374208D);中央财政林业科技推广示范资金项目“标准化水源保护林营造及经营示范区建设”(冀sfq〔2020〕003号)。

摘　　要：为提高柞树天然次生林的经营管理水平,以河北省柞树天然次生林为研究对象,采用主成分分析和相关分析法,对该林分生长指标与立地因子进行相关分析。结果表明:对Ⅰ龄级柞树树高影响最大的立地因子是海拔,Ⅱ龄级是土层厚度,Ⅲ龄级是坡位,Ⅳ龄是土层厚度;对Ⅰ、Ⅱ龄级柞树胸径影响最大的立地因子是坡位,Ⅲ龄级是地貌,Ⅳ龄级是土层厚度。随着林龄的增加,柞树生长受到土层厚度的影响逐步增大。In order to improve managerial and administrative level of oak natural secondary forest,the paper studied the relevance between growth indices and site factors by using principal component analysis and relative analysis.The result displayed site factor that had the greatest influence on the height of the first age class oak was altitude,site factor influenced to the second,third and fourth age classes were soil layer thickness,slope position,and soil thickness,respectively.Site factor that had the greatest influence on the diameter of the first and second age classes oak DBH were slope position,while landform and soil thickness had the greatest influence on the third and fourth age classes,respectively.With the increased of tree age,the influence of soil layer thickness on oak growth gradually increased.

关 键 词：柞树 龄级 立地因子 树高 胸径 

分 类 号：S792.186[农业科学—林木遗传育种]