杉木与木荷纯林及混交林生长效应研究  

Study on the growth effect of pure and mixed forests of Cunninghamia lanceolata and Schima superba

作　　者：张志杰 ZHANG Zhijie(Yongan National Forest Farm of Fujian,Yongan 366031,Fujian,China)

机构地区：[1]福建省永安国有林场,福建永安366031

出　　处：《福建林业》2023年第5期31-34,共4页Fujian Forestry

摘　　要：对福建省永安国有林场16年生杉木、木荷纯林及不同比例混交林分的胸径、树高、单株材积及林分蓄积量进行调查分析,结果表明:3种参试林分中杉木和木荷树高生长的差异均未达显著水平,但在4杉6荷混交林中,杉木的平均胸径、单株材积分别为12.4 cm、0.05632 m^(3),木荷平均胸径、单株材积分别为13.4 cm、0.06626 m^(3),均明显优于纯林;4杉6荷林分总蓄积量分别比6杉4荷、杉木纯林、木荷纯林提高18.5%、35.8%、56.4%;6杉4荷林分总蓄积量比杉木纯林、木荷纯林分别提高4.6%和32.0%。混交林中,木荷生长优于杉木,4杉6荷中木荷的平均胸径比杉木增加1.0 cm;6杉4荷中木荷的平均胸径比杉木增加0.8 cm。A survey and analysis of the diameter at breast height,tree height,volume of wood per plant and stand volume in 16-year of Cunning-hamia lanceolata pure stand(1*stand),Schimasu perba pure stand(2^(nd)stand),and mixed forests(3^(rd)stand)with different proportions of the two species in Yong an State Forestry Farm in Fujian Province.Main results showed that:there was no significant difference in the height growth of C.lanceolata or s.superb respectively among the three tested stands.However,compared with the tree growth in the 1st and 2^(nd)stand respectively,in the mixed forest with 4:6(C.lanceolala:S.superba),there were strongly higher values for the growth of the average diameter at breast height and volume of C.lanceolata with 12.4 cm and 0.05632 m^(3)respectively,and that of S.superb with 13.4 cm,and 0.06626 m^(3)respectively.The to-tal volume of the 3n stand with 4:6(C.lanceolat:S.superba)was higher with 4.6%and 32%than the 1stand 2nd stand respectively.For the two tree species in the mixed forest,the growth of S.superba was better than that of C.lanceolata.The average diameter at breast height of C.lanceo-lata in 4:6(C.lanceolata:S.superba)mixed stand increased by 1.0 cm compared with that of C.lanceolata,and the diameter at breast height forests of S.superba in the 6:4(C.lanceolata:S.superba)mixed stand increased by 0.8 cm compared with that of C.lanceolata.

关 键 词：杉木 木荷 针阔混交林 人工林 混交比例 

分 类 号：S725.2[农业科学—林木遗传育种]