华北区域环境梯度上阔叶林构建模式及分布成因  

Community assembly, diversity patterns and distributions of broad-leaved forests in North China

作　　者：许金石 柴永福[1] 刘晓[1] 岳明[1] 郭垚鑫[1] 康慕谊[2,3] 刘全儒 郑成洋[5] 吉成均[5] 闫明[6] 张峰[7] 高贤明[8] 王仁卿[9] 石福臣[10] 张钦弟[6] 王茂[1,11] XU Jin-Shi;CHAI Yong-Fu;LIU Xiao;YUE Ming;GUO Yao-Xin;KANG Mu-Yi;LIU Quan-Ru;ZHENG Cheng-Yang;JI Cheng-Jun;YAN Ming;ZHANG Feng;GAO Xian-Ming;WANG Ren-Qing;SHI Fu-Chen;ZHANG Qin-Di;WANG Mao(Key Laboratory of Resource Biology and Biotechnology in Western China,Ministry of Education,Northwest University,Xi’an 710069,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;College of Life Sciences,Beijing Normal University,Beijing 100875,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;College of Life Sciences,Shanxi Normal University,Linfen,Shanxi 041000,China;Institute of Loess Plateau,Shanxi University,Taiyuan 030006,China;State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;School of Life Sciences,Shandong University,Jinan 250100,China;College of Life Sciences,Nankai University,Tianjin 300071,China;College of Grass Industry and Environmental Science,Xinjiang Agricultural University,ürümqi 830091,China)

机构地区：[1]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 [2]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 [3]北京师范大学地理科学学部自然资源学院,北京100875 [4]北京师范大学生命科学学院,北京100875 [5]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 [6]山西师范大学生命科学学院,山西临汾041000 [7]山西大学黄土高原研究所,太原030006 [8]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 [9]山东大学生命科学学院,济南250100 [10]南开大学生命科学学院,天津300071 [11]新疆农业大学草业与环境科学学院,乌鲁木齐830091

出　　处：《植物生态学报》2019年第9期732-741,共10页Chinese Journal of Plant Ecology

基　　金：国家科技基础性工作专项(2011FY110300);中国博士后科学基金(2018M643715);国家自然科学基金(31700348)~~

摘　　要：森林群落的构建即多样性维持机制是当今生态学研究的热点问题。然而,当前群落构建和群落多样性的研究多在间接梯度上进行,而在水、热等影响物种在区域内定植的关键且直接的环境梯度上研究群落构建和多样性模式则鲜有报道。结合环境因子,基于物种组成和谱系方法探讨不同群落的分布成因,有助于解释群落构建过程中的关键问题。该研究基于华北森林群落调查数据和环境数据,涉及7个省市区的29个以壳斗科、桦木科为优势种的群落,探讨了直接环境梯度上的群落构建和多样性模式,同时用典范对应分析研究了不同群落分布的环境解释。结果发现,相似的群落具有相似的生境偏好,相似的生境条件会形成物种组成相同或相似的群落。环境热量主导了本区域的谱系关系,在年平均气温较低的地区,群落构建主要表现为生境过滤的模式。此外,随着年降水量的增加,生境过滤作用逐渐增加。在温度梯度上,谱系多样性表现为钟形模式,而降水量的增加能导致谱系多样性的增加。Aims To understand the key processes driving the community assembly and diversity patterns in North China.Methods We investigated species composition of 87 plots from 29 sites.We applied phylogenetic approach,combined with community distribution information,to assess the community structure and diversity along environmental gradients.We then performed a variance partition to explore the relative importance of each environmental factor that influencing the patterns of community assembly and diversity process and a canonical correspondence analysis to analyze reason of community distributions.Important findings Similar communities showed similar habitat preferences,demonstrating that environments may shape species composition of the communities.The phylogenetic diversity showed a uni-modal pattern with the mean annual temperature(MAT),but increased with the mean annual precipitation(MAP),partly because of the strong disturbance in high-MAT regions.Temperature dominated the phylogenetic structure of the broadleaved forests in North China.Environmental filtering dominate the community assembly processes in the areas with relatively low MAT.In addition,the effect of environment filtering increased with MAP.

关 键 词：群落构建 谱系多样性 水热条件 物种组成 

分 类 号：S718.5[农业科学—林学]