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时间:2020-06-19
《沿坝生态交错带不同落叶松群落生长动态研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、西北林学院学报2014,29(2):42~48JournalofNorthwestForestryUniversitydoi:10.3969/j.issn.1001—7461.2014.02.08沿坝生态交错带不同落叶松群落生长动态研究张建华。,丁国栋,姜鹏。,任仙(1.北京林业大学水土保持学院,北京100083;2.河北省木兰林管局,河北承德068450;3.河北农业大学林学院,河北保定071001)摘要:为探究沿坝生态交错带森林植被生长演替规律与动态,采用解析木分析方法,以木兰围场国有林场管理局北沟林场域内落叶松纯林(群落A)和落桦(群落B)、落阔(群落c)和杉落针
2、阔混交林(群落D)4种不同华北落叶松群落类型为研究对象,对其不同群落内树木生长和生物多样性进行研究。结果表明:研究区不同落叶松群落内同一树种生长率和生物多样性指数均显示群落D最高,群落B、C次之,群落A最低;同一落叶松群落下的树种则表现出中、幼龄阶段阔叶树长势好于针叶树。从而得出,在植被生长演替过程中,阔叶山杨、白桦等树种将逐步被针叶落叶松、云杉树种所取代,最终形成稳定的衫落针阔混交林群落。关键词:沿坝生态交错带;华北落叶松;生长动态;演替中图分类号:$718.5文献标志码:A文章编号:1001—7461(2014)一02—0042—07GrowthDynamicofL
3、arixprincipis—rupprechtiiMayr.CommunityalongtheDamEcotoneZHANGJian—hua,DINGGuo—dong”,JIANGPeng。,RENXianCollegeofSoil&WaterConservation,BeijingForestryUniversity,Beijing100083,Chin2.MulanForestryManagementBureau,Chengde,Hebei068450,China;CollegeofForestry,AgriculturalUniversity0厂Baoding,B
4、aoding,Hebei071001,China)Abstract:Inordertounderstandthesuccessionandgrowthdynamicsofforestvegetationalongthedame—cotone,thegrowthandbiodiversityof4differentcommunitytypesofLarixprincipis—rupprechtiiMayr.ForestswerestudiedbyexamininganalyticaltreesamplesinBeigouForestFarmofMulanweichangN
5、a—tionalForestryManagementBureau,includingLarchpureforest(communityA),L.,.f夕rj户户re—chtiiandBetulaplatyphyllaSuk.mixedforest(communityB),L.rc户rPf^andbroad—leavedtreemixedforest(communityC)andL.rcir“r8c九,PiceaasperataMast.mixedforest(communityD).Theresultsshowedthatthegrowthrateofthesamesp
6、eciesandthebiodiversityindexofcommunityDwerethebestamongthe4communities,followedbycommunityBandC,thoseofcommuni—tyAwerethelowest.Thebroadleavedtreesweregrowingbetterthanconiferoustreesintheyoung—ageandmiddle—agelarchforestsofthesamecommunity.ItwasconcludedthatP.davidiana,B.platyphyllawou
7、ldgraduallybereplacedbylarchandsprucetreesintheprocessofvegetationgrowthandsuccession,eventuallyastablelarchandsprucemixedforestwouldbeestablished.Keywords:alongthedamecotone;Larixprincipis~rupprechtiicommunity;growthdynamic;succession森林植被群落是陆地上结构与功能最大的生态中,欲描述森林群落的整体发展状况,
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