桉树混交林冠层特征分析  

Analysis on Canopy Characteristics of Eucalypt Mixed Plantation

作　　者：雍强 蒋林 麦雄强 梁志诚 李玲娇 郭东强[1] Yong Qiang;Jiang Lin;Mai Xiongqiang;Liang Zhicheng;Li Lingjiao;Guo Dongqiang(Guangxi Forestry Research Institute,Guangxi Nanning Eucalypt Plantation Ecosystem Observation and Research Station,Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning,Guangxi 530002,China;Guangxi State-owned Qipo Forest Farm,Nanning,Guangxi 530225,China)

机构地区：[1]广西壮族自治区林业科学研究院,广西南宁桉树森林生态系统定位观测研究站,广西优良用材林资源培育重点实验室,广西南宁530002 [2]广西壮族自治区国有七坡林场,南宁530225

出　　处：《广西林业科学》2021年第6期652-656,共5页Guangxi Forestry Science

基　　金：广西科技基地与人才专项(桂科AD20325008);广西林业科技推广示范项目([2021]GT15号)。

摘　　要：为研究桉树混交林营林效果,探讨相关参数与生长性状间的相关性,对3种混交林分进行冠层特征分析。结果显示,混交林林分的叶面积指数均显著高于尾巨桉(Eucalyptus urophlla×E.grandis)纯林,表现为尾巨桉+红锥(Castanopsis hystrix)>尾巨桉+灰木莲(Manglietia glauca)>尾巨桉+香梓楠(Michelia hedyosperma)>尾巨桉纯林,其叶面积指数分别为2.28、1.80、1.79和0.83。尾巨桉纯林的叶倾角小于混交林。尾巨桉纯林、尾巨桉+香梓楠、尾巨桉+灰木莲和尾巨桉+红锥的冠层开度分别为0.531、0.236、0.235和0.162。冠层开度与尾巨桉单株材积呈显著负相关,叶面积指数和叶倾角与单株材积呈正相关。In order to study afforestation effect of eucalypt mixed plantation and explore correlation between related parameters and growth traits,canopy characteristics of three mixed plantations were analyzed.Results showed that leaf area indexes of mixed plantations were significantly higher than that of Eucalyptus urophlla×E.grandis plantation.Order of leaf area index was E.urophlla×E.grandis+Castanopsis hystrix>E.urophlla×E.grandis+Manglietia glauca>E.urophlla×E.grandis+Michelia hedyosperma>E.urophlla×E.grandis pure plantation.Leaf area indexes were 2.28,1.80,1.79 and 0.83,respactively.Average leaf angle of E.urophlla×E.grandis pure plantation was less than that of mixed plantations.DIFN of E.urophlla×E.grandis pure plantation,E.urophlla×E.grandis+M.hedyosperma,E.urophlla×E.grandis+M.sumatrana and E.urophlla×E.grandis+C.hystrix were 0.531,0.236,0.235 and 0.162.DIFN was significantly negatively correlated with individual volume of E.urophlla×E.grandis.Leaf area index and leaf angle were positively correlated with individual volume.

关 键 词：森林培育 冠层特征 桉树混交林 叶面积指数 

分 类 号：S725.2[农业科学—林木遗传育种]