龙王山落叶阔叶林群落特征及物种多样性研究-论文.pdf

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1、第34卷第3期西南林业大学学报Vo1．34No．32014年6月JOURNALOFSOUTHWESTFORESTRYUNIVERSITYJun．20l4doi：10．3969／j．issn．2095—1914．2014．03．004龙王山落叶阔叶林群落特征及物种多样性研究徐建韦新良王敬汪贤挺俞立鹏(1．浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室，浙江临安3113002．安吉县龙王山自然保护区管理处，浙江安吉313300)摘要：采用丰富度(、)、多样性(D、H)和均匀度(I，，、)各2种指数研究龙王山落叶阔叶

2、林的物种多样性。结果表明，龙王山落叶阔叶林植物资源丰富，灌木种数最多，草本植物最少，共计有维管柬植物54科91属140种(含变种)；群落层次分明，从上到下，分为乔木层、灌木层和草本层，并有少量层间植物。乔木层和草本层中优势种比较明显，灌木层中各优势种的差异不明显；丰富度指数(R、尺)，多样性指数(D、H)，均匀度指数(、)的变化趋势均一致，灌木层>乔木层>草本层；t检验结果表明，各个层次之间的物种丰富度和多样性差异性均显著，灌木层的均匀度指数(-，，、JR)与乔木层和草本层的差异性并不显著，而乔木层与草本层均匀度差异却相

3、对显著。关键词：落叶阔叶林；群落；物种多样性；差异性；龙王山中图分类号：$718．54文献标志码：A文章编号：2095—1914(2014)03—0019—08SpeciesDiversityandtheCommunityCharacteristicsofDeciduousBroad—LeavedForestinLongwangMountainXUJian，WEIXin—liang，WANGJing，WANGXian—ting，YULipeng(1．ZhejiangProvineialKeyLaboratoryO±Car

4、bonCyclinginForestEcosystemsandCarbonSequestration，ZhejiangA&FUniversity，LinanZhejiang311300，China；2．ManagementDepartmentofLongwangMountainNatureReserve，AnjiZhejiang313300，China)Abstract：SpeciesdiversityofplantcommunitiesinLongwangMountainwasstudiedbyusingseperat

5、ely2in—dexofrichnessindex(R1，R2)，diversityindices(D，H)andevennessindex(Jl，J2)．Theresultsshowedthatthedeciduousbroad—leavedforestinthisareahadrichplantspecies．Amongthem，thenumberofshrubspecieswerethemostandtheherbweretheleast．Ittotaled54families，91generaand140spec

6、ies(includingvariations)ofvascularplantspecies．Theverticalstructureofcommunitywasrelativelybeautifullylayeredwhichcouldbedi·videdintotreelayer，shrublayer，herblayer，andadefinitenumberofinterstratumplantsbesides．Thedominantspeciesintreeandherblayerwerequiteobvious，

7、butthedominantspeciesintheshrublayerofthedifferenceswastheopposite．Thechangetrendofrichnessindex(RlandR2)、diversityindex(DandH)andevennessindex(JlandJ2)werethesame(shrublayer>treelayer>herblayer)．T-testresultsshowedthatthedifferencesofthespe—ciesrichnessanddivers

8、itybetweenalllayersweresignificantly．Theevennessindexbetweentheshrublayerandtheotherlayershasnosignificantdifference，whiletheevennessindexofthetreeandshrublaye