金沟岭林场混交林TWINSPAN分类及演替序列分析

《金沟岭林场混交林TWINSPAN分类及演替序列分析》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、第33卷第1期南京林业大学学报(自然科学版)Vol.33,No.12009年1月JournalofNanjingForestryUniversity(NaturalSciencesEdition)Jan.,2009金沟岭林场混交林TWINSPAN分类及演替序列分析12张会儒,汤孟平(1.中国林业科学研究院资源信息研究所,北京100091;2.浙江林学院环境科技学院,浙江临安311300)摘要:采用TWINSPAN分类方法,对吉林金沟岭林场混交林进行了数量分类,并分析了混交林演替规律。结果表明:利用该方法可将研究区域混交林分为7种森林类型,其分布特

2、点是从白杨榆杂阔叶混交林到云冷杉红松混交林的面积比例逐渐增大,其中所占比例最大的是云冷红-椴枫色针阔混交林,其次是云冷红-白杨枫椴针阔混交林,这两类混交林合计比例为5514%,该区的顶极群落———阔叶红松林所占比例仅为814%。说明云冷杉红松针阔混交林是金沟岭林场的主要森林类型。演替规律分析表明,7种混交林类型呈现出明显的演替特征。总的趋势是先锋树种由强变弱,伴生树种和针叶顶极树种由弱变强,呈后来者居上的趋势,最终将形成具有稳定树种组成结构的阔叶红松林。关键词:混交林;TWINSPAN分类;演替分析;金沟岭林场中图分类号:S757文献标志码:A文

3、章编号:1000-2006(2009)01-0037-06ClassificationandsuccessionanalysisofmixedforestinJingoulingforestfarmusingtheTWINSPANmethod12ZHANGHui2ru,TANGMeng2ping(1.ResearchInstituteofForestResourceInformationTechniques,ChineseAcademyofForestry,Beijing100091,China;2.SchoolofEnvironmentalSc

4、iencesandTechnology,ZhejiangForestryCollege,Lin’an311300,China)Abstract:Inthispaper,theTWINSPANclassificationmethodwasusedtoquantitativelyclassifymixedforestinJingoulingforestfarm.Thentheclassificationresultswasusedtoanalyzesuccessionlawofmixedforest.Themixedforestofthefarmwa

5、sdividedintoseventypeswithcharacteristicsofareaproportionincreasedgradually.TheproportionofmixedconiferandbroadleafforestofPiceasp.,Abiessp.,P.koraiensis,Tiliasp.,B.costataandAcersp.wasthehighest,thesecondwasmixedconiferandbroadleafforestofPiceasp.,Abiessp.,P.koraiensis,B.pla

6、typhylla,Populussp.,B.costataandTiliasp..Theproportionofthesetwotypeswas5514%oftotal.ItshowedthatmixedconiferandbroadleafforestofPiceasp.,Abiessp.,andP.koraiensiswasmainforesttypeinthefarm.TheproportionofmixedforestofbroadleafandP.koraiensis,theclimaxcommunityofthisregionwaso

7、nly814%.Successionlawanalysisindicatedthatsuccessioncharacteristicsofseventypesweredistinctive.Thetotaltrendswerethatpioneertreespecieschangedfrompuninesstomightiness,associatedtreespeciesandclimaxconifertreespecieschangedfrommightinesstopuniness.Itwellformedmixedforestofbroa

8、d2leavedtreeandKoreanpinewithsteadytreespeciesstructurefinally.There