闽中山地不同坡位多树种混交造林效果比较  

Comparison of Afforestation Effects of Multiple Tree Species Mixed at Different Slope Positions in Mountainous Areas of Central Fujian

作　　者：李肇守 Li Zhaoshou(Youxi National Forest Farm of Fujian Province,Sanming 365100,China)

机构地区：[1]福建省尤溪国有林场,福建三明365100

出　　处：《防护林科技》2023年第2期22-24,85,共4页Protection Forest Science and Technology

基　　金：福建省三明市林业科学研究项目“杉木与木荷混交林间伐技术研究”(2019N02)。

摘　　要：以8年生枫香、木荷、杉木、马尾松组成的混交林为研究对象,分析了相同树种在不同坡位的生长情况和相同坡位的各树种生长情况。结果表明:枫香、木荷、杉木均表现为坡位越低,生长越优。其中,枫香对立地条件变化的反应特别敏感,在下坡是优势树种,在中坡表现一般,在上坡生长差。木荷在各坡位均具有生长潜力。而马尾松表现为坡位越低,生长越差,在下坡因受其他树种遮挡,生长极差;在中坡,平均胸径、平均冠幅最大;在上坡,马尾松是优势树种且能促进其他树种生长。可见,下坡适宜营造枫香、杉木(或保留萌芽)、木荷混交林,中坡适宜营造马尾松、杉木(或保留萌芽)、枫香、木荷混交林,上坡适宜营造马尾松、杉木(或保留萌芽)、木荷混交林。The mixed forest composed of 8-year-old Liquidambar formosana,Schima superba,Cunninghamia lanceolata and Pinus massoniana was taken as the research object to analyze the growth of the same tree species at different slope positions and the growth of various tree species at the same slope position.The results showed that Liquidambar formosana,Schima superba and Cunninghamia lanceolata all manifested better growth in lower slope position.Among them,Liquidambar formosana was particularly sensitive to changes in site conditions.Liquidambar formosana was a dominant tree species at the downhill position,performed generally at the middle slope,and grew poorly at the uphill position;Schima superba had growth potential at all slope positions.However,Pinus massoniana showed that the lower the slope position,the worse the growth;the growth of Pinus massoniana was extremely poor at the downhill position because it was blocked by other tree species.In the middle slope,the average DBH and average crown width were the largest,while at the uphill position,Pinus massoniana was the dominant tree species and could promote the growth of other tree species.To sum up,the downhill slope is suitable for planting Liquidambar formosana,Cunninghamia lanceolata(or retaining the bud)and Schima superba mixed forest,the middle slope is suitable for planting Pinus massoniana,Cunninghamia lanceolata(or retaining the bud),Liquidambar formosana and Schima superba mixed forest,and the upslope is suitable for planting Pinus massoniana,Cunninghamia lanceolata(or retaining the bud)and Schima superba mixed forest.

关 键 词：多树种混交 生物学特性 种间关系 坡位 

分 类 号：S725.2[农业科学—林木遗传育种]