立地因子对不同龄级油松人工林生长的影响  

Influence of Site Factors on Growth of Pinus tabulaeformis Plantations at Different Ages

作　　者：梁佳宁 刘洋 周晓东 钱腾[2] Liang Jianing;Liu Yang;Zhou Xiaodong;Qian Teng(BeijingXishan Experimental Forest Farm,Beijing 100093,China;Research Institute of Forestry Policy and Information 2.Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]北京市西山试验林场,北京100093 [2]中国林业科学研究院林业科技信息研究所,北京100091

出　　处：《防护林科技》2020年第5期13-17,共5页Protection Forest Science and Technology

摘　　要：以北京市森林资源二类调查数据和相关文献资料为基础,采用主成分分析及相关性分析方法对北京山区海拔、坡向、坡度、土壤质地、土壤类型、土壤厚度、枯落叶厚度等7个因子对林木生长影响进行了研究,结果表明:不同因子对不同龄级油松人工林平均树高、胸径及蓄积量的影响不同,对Ⅲ龄级、Ⅳ龄级各生长量影响最大。对Ⅰ龄级和Ⅲ龄级油松人工林各生长量均有影响的立地因子是海拔和坡向,对Ⅱ龄级油松人工林各生长量均有影响的立地因子是坡向,对Ⅳ龄级油松人工林各生长量均有影响的立地因子是海拔、土壤质地和土壤厚度。土壤因子对油松人工林Ⅲ、Ⅳ龄级的生长情况影响较大,对Ⅰ、Ⅱ龄级油松人工林影响较小。Based on the data of Beijing Forest Resources Inventory and various material in the past years,the influence of seven site factors(altitude,aspect,slope,soil texture,soil type,soil thickness,litter thickness)on the growth of forest trees were studied by using principal component analysis and correlation analysis methods.Result shows that:Different site factors have different effects on the growth of average height,mean DBH&average volume of Pinus tabulaeformis plantations at different ages.The range of influence on the growth of the ageⅢ&ageⅣis the largest.The site factors that affect the growth of ageⅠ&ageⅢPinus tabulaeformis plantations are elevation&slope,affect the growth of ageⅡare slope,affect the growth of ageⅣare altitude,soil texture&soil thickness.From the overall situation of the average tree height,average breast diameter&average volume of Pinus tabulaeformis plantation forest,the soil factors have a greater influence on the growth of ageⅢ&Ⅳ,and on the growth of ageⅠ&Ⅱissmaller.

关 键 词：油松 人工林 立地因子 主成分分析 平均树高 平均胸径 平均蓄积量 

分 类 号：S791.254[农业科学—林木遗传育种]