文献类型：期刊文献

中文题名：珍贵树种林窗化改造低效杉木林效果分析

英文题名：Effect analysis of gap creation on regenerating low-efficiency Cunninghamia lanceolata plantations with precious tree species

作者：胡厚臻[1,2] 崔之益[1] 李小飞[1] 张启雷[1] 朱士铭[1] 方小英[1] 刘小金[1] 徐大平[1] 熊咏梅[3] 苏宇[3]

第一作者：胡厚臻

机构：[1]中国林业科学研究院热带林业研究所,广东广州510520;[2]南京林业大学林草学院,江苏南京210037;[3]广州市林业和园林科学研究院,广东广州510080

年份：2025

卷号：45

期号：2

起止页码：61-70

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：;北大核心:【北大核心2023】；

基金：广东省林业科技创新项目(2020KJCX007);广州市生态园林科技协同创新中心(202206010058)。

语种：中文

中文关键词：杉木;林窗;珍贵树种;混交种植;林分改造

外文关键词：Cunninghamia lanceolata;forest gap;precious tree species;mixed planting;forest replanting

分类号：S725.2

摘要：【目的】研究不同树种、林窗规格、种植模式对珍贵树种林窗化改造低效杉木人工林效果,为低产、低效杉木纯林转型为杉-珍复层混交林的林窗化改造提供科学依据。【方法】以广东肇庆15年生杉木人工林为研究对象,采用完全随机区组设计,选择6个珍贵树种(黑木相思、红锥、交趾黄檀、母生、格木、闽楠),设置3种林窗规格(8m×8m、12m×12m、16m×16m)和3种种植模式(纯林、2个树种的低度混交、6个树种的高度混交),分析比较6个珍贵树种在不同林窗及不同种植模式下的生长效果。【结果】不同树种的生长表现差异显著,交趾黄檀与红锥的各项生长指标综合表现最好,林分已基本郁闭成林;闽楠、格木生长表现一般,母生生长表现较差;黑木相思整体长势良好,但其保存率仅有25%。中、小林窗有利于提高红锥的保存率,中、大林窗有利于促进交趾黄檀、红锥径向生长,大林窗能很好地促进闽楠株高与胸径生长,各树种生长整体表现为大林窗>中林窗>小林窗。高度混交模式有利于提高母生保存率及促进交趾黄檀高生长;低度混交模式有利于促进黑木相思的径向生长,并促进交趾黄檀、闽楠、黑木相思的树冠生长,红锥在纯林及高度混交模式下的树冠生长较好。【结论】交趾黄檀、红锥和格木生长表现较好,是适宜广东省杉木林窗混交化改造的珍贵树种。闽楠生长表现一般,鉴于其为慢生树种且保存率较高,推荐其为备选树种。在中大林窗下,交趾黄檀或红锥的纯林、交趾黄檀与母生混交,格木与闽楠混交可作为低产、低效杉木林混交化改造的技术模式。
【Objective】To study the effects of different tree species,gap size and planting pattern on the gap transformation of on low-efficiency Cunninghamia lanceolata plantations,and to provide a scientific basis for the gap transformation of low-yield and low-efficiency C.lanceolata pure plantations into mixed forest of C.lanceolata and precious tree species.【Method】Using randomized complete block design,the transformation experiment of 15-year-old C.lanceolata plantations in Zhaoqing,Guangdong Province was carried out with precious tree species:Acacia melanoxylon,Castanopsis hystrix,Dalbergia cochinchinensis,Homalium hainanense,Erythrophleum fordii,Phoebe bournei.Set up three types forest gap sizes(8 m×8 m,12 m×12 m,16 m×16 m)and three planting modes(pure forest,low mingling of two tree species,and high mingling of six tree species),to analyze and compare the growth effects of six precious tree species under different forest gaps and different planting patterns.【Result】The growth performance of different tree species was significantly different,the comprehensive growth indexes of D.cochinchinensis and C.hystrix were the best,and the stand had been basically closed into forest.The growth performance of P.bournei and E.fordii is general,the growth performance of H.hainanense is poor.The overall growth of A.melanoxylon is good,but its preservation rate is only 25%.Medium and small forest gaps are beneficial to improve the preservation rate of C.hystrix.Medium and large forest gaps can promote the growth of DBH of D.cochinchinensis and C.hystrix.Large forest gap can promote the growth of plant height and DBH of P.bournei.The overall growth of each tree species was large gap>medium gap>small gap.The highly mixed mode is beneficial to improve the maternal survival rate and promote the growth of D.cochinchinensis.The Lightly mixed mode is beneficial to promote the radial growth of A.melanoxylon,and promote the crown growth of D.cochinchinensis,P.bournei and A melanoxylon.The crown growth of C.hystrix in pure forest and high mixed mode is better.【Conclusion】The comprehensive growth performance of D cochinchinensis,C hystrix and E fordii is good,which is suitable for the mixed transformation of C.lanceolata forest gap in Guangdong Province.The growth performance of P.bournei is general.in view of its slow growth and high preservation rate,it is recommended as an alternative tree species.Under the medium and large forest gap,the pure forest of D.cochinchinensis or C.hystrix,the mixed forest of D.cochinchinensis and H.hainanense,the mixed forest of E.fordii and P.bournei,and they can be used as technical reference for the mixed transformation of low-yield and low-efficiency C.lanceolata plantations.