华北地区荆条灌丛分布及物种多样性空间分异规律  

Distribution and species diversity patterns of Vitex negundo var. heterophylla shrublands in North China

作　　者：唐丽丽 杨彤 刘鸿雁[2] 康慕谊[3,4] 王仁卿 张峰[6] 高贤明[7] 岳明[8] 张梅[1] 郑璞帆 石福臣 TANG Li-Li;YANG Tong;LIU Hong-Yan;KANG Mu-Yi;WANG Ren-Qing;ZHANG Feng;GAO Xian-Ming;YUE Ming;ZHANG Mei;ZHENG Pu-Fan;SHI Fu-Chen(College of Life Sciences,Nankai University,Tianjin 300071,China;Institute of Ecology,College of Urban and Environmental Sciences,Laboratory for Earth Surface Processes of the Ministry of Education,Peking University,Beijing 100871,China;State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China;College of Resources Science&Technology,Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China;School of Life Sciences,Shandong University,Jinan 250100,China;Institute of Loess Plateau,Shanxi University,Taiyuan 030006,China;State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academic of Science,Beijing 100093,China;Key Laboratory of Resource Biology and Biotechnology in Western China,Ministry of Education,Northwest University,Xi’an 710069,China)

机构地区：[1]南开大学生命科学学院,天津300071 [2]北京大学城市与环境学院,北京大学生态研究中心,地表过程分析与模拟教育部重点实验室,北京100871 [3]北京师范大学地表过程与资源生态国家重点实验室,北京100875 [4]北京师范大学地理科学学部自然资源学院,北京100875 [5]山东大学生命科学学院,济南250100 [6]山西大学黄土高原研究所,太原030006 [7]中国科学院植物研究所植被与环境变化国家重点试验室,北京100093 [8]西北大学西部资源生物与现代生物技术教育部重点实验室,西安710069

出　　处：《植物生态学报》2019年第9期825-833,共9页Chinese Journal of Plant Ecology

基　　金：国家科技基础性工作专项(2011FY110300);天津市农业农村委员会项目(ITTFPRS2018001);天津市科学技术委员会项目(18ZXZYNC00120)~~

摘　　要：生境差异是影响植物群落及其物种多样性分布格局的重要因素。该研究基于370个荆条(Vitexnegundovar.heterophylla)灌丛的野外调查样方,结合多元回归树(MRT)、显著性分析、Pearson相关分析等技术手段,分析了华北地区荆条灌丛及其物种多样性的空间分布格局。结果表明:荆条灌丛的经纬度均跨越10°以上,可分为高、中、低纬度分布区;分布海拔则从117 m至1248 m跨越了1000 m以上,也可分为高、中、低海拔分布区。所有分布区中荆条灌丛草本层的Shannon-Wiener指数、Simpson指数和均匀度指数均高于灌木层。灌木层物种多样性随着纬度的降低而降低,随着海拔的升高而降低;草本层相反,物种多样性随着纬度降低而升高,随着海拔升高而升高。灌木层和草本层的物种丰富度(Shannon-Wiener指数)与水、热、地形等环境因子显著相关,其中灌木层物种多样性随着气温、坡位升高而显著减少,随着降水的增加而显著增加;草本层则相反。Aims To explore the factors controlling the spatial distribution,as well as the species diversity,of the Vitex negundo var.heterophylla shrublands in North China.Methods We investigated the species composition and environments for 370 shrubland plots of Vitex negundo var.heterophylla shrublands in North China.We calculated biodiversity indices(Shannon-Wiener index,Simpson index and Pielou’s evenness index)and then applied multivariate regression trees(MRT),analysis of variance(ANOVA),Pearson correlation analysis to disentangle distribution of the Vitex negundo var.heterophylla community and patterns of species diversity along both horizontal and elevational gradients.Important findings The results showed that Vitex negundo var.heterophylla shrublands distributed in a large area stretching for more than 10°of both latitude and longitude,together with an elevational range of more than 1000 m(117 m to 1248 m).The Shannon-Wiener index,Simpson index and Pielou’s evenness index were higher in the herbaceous layer than those in the shrub layers.The species diversity of shrub layer increased with latitude but decreased with elevation.In contrast,that of the herbaceous layer decreased with latitude but increased with elevation.The Shannon-Wiener indexes of both layers were significantly correlated with environmental factors.The results of Pearson correlation analysis indicated that the Shannon-Wiener indexes of shrub layer had a significantly negative relationship with its temperature and slope position,and a significantly positive relationship with its precipitation.However,that of herb layer showed opposite trends.

关 键 词：荆条灌丛 物种多样性指数 分布格局 植物群落 

分 类 号：Q948[生物学—植物学]