欢迎来到天天文库
浏览记录
ID:53567319
大小:596.98 KB
页数:8页
时间:2020-04-18
《滇西北云南红豆杉群落结构与更新特征-论文.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、生态学杂志ChineseJournalofEcology2012,31(12):3024-3031滇西北云南红豆杉群落结构与更新特征:}:刘万德李帅锋张志钧苏建荣一(中国林业科学研究院资源昆虫研究所,昆明650224)摘要以云南西北部云南红豆杉(Taxusyunnanensis)群落为研究对象,利用在兰坪县、香格里拉县和宁蒗县的野外样地调查数据,分析了云南红豆杉群落物种组成、多样性、结构及云南红豆杉更新特征。结果表明:云南红豆杉群落主要物种包括玉山竹(Yushanianiitakay—amensis)、云南铁杉(Tsugadumosa)、云南红豆杉、红桦(Betulaalbo.
2、sinensis)和云南箭竹(Fargesiayunnanensis)。香格里拉县具有较高的科、属、灌木物种丰富度,但乔木、藤本及总物种丰富度在3个地点之间无显著差异。兰坪县和香格里拉县均在较低径级和高度级中具有较高的物种丰富度和个体多度,而宁蒗县则在第Ⅱ径级和第Ⅱ高度级中具有最高的物种丰富度和个体多度。云南红豆杉野生种群实生苗更新困难,但云南红豆杉具有较强的萌生能力,萌生个体多度与实生个体多度比为1.314,萌生方式主要为干基萌生和干萌生;宁蒗县萌生个体最多,但3个地点萌生植株平均胸径和平均高无显著差异。关键词物种组成;物种多样性;大小结构;萌生;云南红豆杉中图分类号Q948
3、文献标识码A文章编号1000—4890(2012)12—3024—08CommunitystructureandregenerationcharacteristicsofTaxusyunnanensisinnorthwestYunnanProvinceofSouthwestChina.LIUWan—de,LIShuai—feng,ZHANGZhi-jun,SUJian—rong一(ResearchInstituteofResourceInsect,kChineseAcademyofForestry,Kunming650224,China).ChineseJournafofEco
4、logy,2012,31(12):3024—3031.Abstract:TakingtheTaxusyunnanensiscommunitiesinnorthwestYunnanProvinceastestob.jectsandbasedonthefieldinvestigationdataatthreesites(Lanping,Xianggelila,andNinglangcounties)ofnorthwestYunnan,thispaperanalyzedthespeciescomposition,speciesdiversity,stemsizeclass.andre
5、generationfeaturesoftheyunnanensiscommunities.Thedominantspe—ciesintheyunnanensiscommunitieswereYushanianiitakayamensis,Tsugadumosa,yun—nanensis,Betulaalbo—sinensis,andFargesiayunnanensis.Xianggelilahadthehigherspeciesrichnessoffamily,genus,andshrubsthantheothertwocounties,butnosignificantdi
6、fferenceswereobservedinthespeciesrichnessoftreesandlianasandthetotalspeciesrichnessamongthethreecounties.LanpingandXianggelilahadthehigherspeciesrichnessandabundanceatsma1.1ersizeclasses(DBH<5cm),whileNinglanghadthehighestspeciesrichnessandabundanceattheseconddiameterclass(1am≤DBH<5cm)andhei
7、ghtclass(5am≤日<10m).Thewildyunnanensispopulationhadweakregenerationabilitythroughseedling,buthadstrongersproutingability.Theratioofthestemsthroughsproutingtothroughseedlingwas1.314.Themajorsproutingtypesatallofthethreesiteswerestembasalsproutingand
此文档下载收益归作者所有