福建林业科技2023，Vol.50Issue(4)：44-47,4.DOI:10.13428/j.cnki.fjlk.2023.04.008
杉木皆伐更新杉木木荷混交林生长效益分析
Study on the Growth Effect of Cunninghamia lanceolata Clear-cutting to Renew C.lanceolata Schima superba Mixed Forest
摘要
Abstract
For studying the growth effect,the clear-cutting renewal of C.lanceolata plantation at Yong'an national forest farm of Fu-jian were investiged.The results showed that 32-year-old artificial mixed forest of 8 C.lanceolata with 2 S.Superba,the average height,DBH and stand volume of C.lanceolata were 20.1 m,25.8 cm,0.4727 m3,and stand stock was 425.43 m3·hm-2,which reached the growth index of large diameter wood in the most suitable area of C.lanceolata Ⅰ site class rapid growth and high yield forest.The average height(20.5 m),average DBH(26.1 cm)and stand volume(0.4923 m3)of C.lanceolata pure forest with the same stand age were decreased by 2.0％,1.2％and 4.0％,respectively,but the difference between the two was not signifi-cant.Compared with the average height(18.0 m),average DBH(23.6 cm),stand volume(0.3628 m3)and stand stock(392.89 m3·hm-2)of C.lanceolata pure forest(second goneration),the average height 11.7％,9.3％,30.3％and 8.3％increased,re-spectively,and the difference between the two was extremely significant.The mixed forest of 8 C.anceolata and 2 S.superba(second generation forest)was beneficial to the cultivation of large-diameter wood of C.lanceolata,accounting for 51.7％,which was 17.0％higher than that of pure forest of C.lanceolata(second generation forest).It was a good model for the regeneration of the second gen-eration of C.lanceolata forest to build the mixed forest of C.lanceolata and S.schima after the main clear-cutting of C.lanceolata.关键词
杉木2代林/木荷/混交林/生长效果Key words
C.lanceolata second generation forest/S.superba/mixed forest/growth effect分类
农业科技引用本文复制引用
张超..杉木皆伐更新杉木木荷混交林生长效益分析[J].福建林业科技,2023,50(4):44-47,4.基金项目
国家重点研发计划项目(2016YFD0600301) （2016YFD0600301）
