古田山与中国其他东部典型常绿阔叶林物种组成特征的比较  

Comparative study on species composition between Gutianshan and other eastern typical evergreen broad-leaved forests in China

作　　者：张田田 王璇 金毅[1] 余建平 任海保[2] 钱海源 陈声文 马克平[2] 于明坚[1] ZHANG Tiantian;WANG Xuan;JIN Yi;YU Jianping;REN Haibao;QIAN Haiyuan;CHEN Shengwen;MA Keping;YU Mingjian(College of Life Sciences,Zhejiang University,Hangzhou 310058,China;State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;Administration of Qianjiangyuan National Park,Kaihua 324300,Zhejiang,China)

机构地区：[1]浙江大学生命科学学院,杭州310058 [2]中国科学院植物研究所植被与环境变化国家重点实验室,北京100093 [3]钱江源国家公园管理局,浙江开化324300

出　　处：《广西植物》2020年第8期1061-1070,共10页Guihaia

基　　金：科技部国家基础性工作专项项目(2015FY210200-17);浙江省科技计划项目(2015C02016)。

摘　　要：古田山国家级自然保护区保存着大面积低海拔典型常绿阔叶林,为了解不同地点常绿阔叶林物种组成的差异和驱动因素,该研究在古田山常绿阔叶林内共设置29个20 m×20 m的样地,收集其他14个典型常绿阔叶林的数据,探究古田山常绿阔叶林的物种组成特征,并将15个亚热带东部典型常绿阔叶林进行比较,分析了我国东部典型常绿阔叶林的物种组成差异及驱动因素。结果表明:(1)古田山广泛分布有我国东部典型常绿阔叶林中的栲类林、青冈类林等植被,物种组成在东部典型常绿阔叶林中具有代表性。(2)我国东部典型常绿阔叶林间物种组成差异明显,主要是受环境因素影响而非地理距离,气候因素中最冷月最低温(MTCM)的影响最显著。(3)我国东部典型常绿阔叶林叶生活型组成受最冷月最低温的影响最显著,受最热月最高温(MTWM)的影响是其次,降水量没有显著影响。综上结果发现,生境过滤是我国东部典型常绿阔叶林物种组成差异的主要驱动因素,反映了极端低温对我国亚热带常绿阔叶林物种组成具有重要影响,为常绿阔叶林的保护提供了科学依据。Gutianshan National Nature Reserve(GNNR)preserves a large expanse of low elevation typical EBLFs.In order to understand how species composition of evergreen broad-leaved forests(EBLFs)vary at the regional scale and the underlying drivers,we investigated species composition of 2920 m×20 m plots in GNNR,and collected data of other 14 typical EBLFs that distributed across subtropical eastern China,then we investigated the species composition difference between 15 typical EBLFs,as well as how geographical and physical environments drove these differences.The results were as follows:(1)GNNR EBLFs composed a variety of community types,such as Castanopsis forest and Cyclobalanopsis forest etc.Species composition of GNNR EBLFs was representative in subtropical eastern China.(2)Species composition(βdiversity)largely differed between EBLFs.Physical environments,instead of geographical distance,was the most influential factor of EBLF species composition.EBLF species composition was the most influenced by the minimum temperature of the coldest month(MTCM).(3)Composition of leaf life forms of 15 typical evergreen broad-leaved forests was the most strongly influenced by the minimum temperature of the coldest month(MTCM),then by the maximum temperature of the coldest month(MTWM).These results indicate that habitat filtering is the main driver of the difference of woody plants species composition among eastern typical EBLFs,and suggest cold temperature is the most important determinant of eastern typical EBLFs communities,would provide guidance for conservation and restoration of EBLFs.

关 键 词：中亚热带 东部典型常绿阔叶林 Β多样性 叶生活型 生境过滤 

分 类 号：Q948[生物学—植物学]