额敏野果林植物物种多样性和空间格局特征  

Plant species diversity and spatial pattern characteristics of Malus sieversii population in Emin county

作　　者：金晟康 张丽娟[1] 齐智颖 马哲蕾 叶尔江·拜克吐尔汉 JIN Shengkang;ZHANG Lijuan;QI Zhiying;MA Zhelei;YEERJIANG·Baiketuerhan(College of Forestry and Landscape Architecture,Xinjiang Agricultural University,Urumqi 830052)

机构地区：[1]新疆农业大学林学与风景园林学院,乌鲁木齐830052

出　　处：《林业建设》2024年第4期53-59,共7页Forestry Construction

基　　金：国家级大学生创新训练计划项目(202210758018)新疆维吾尔自治区林业改革发展资金项目(LYFZJJTB2021)。

摘　　要：研究新疆额敏县野果林植物物种多样性与新疆野苹果种群空间分布格局。通过设置典型样地进行多样性调查;采用物种丰富度指数D,Shannon-Wiener指数H,Simpson指数H',Pielou均匀度指数J等分析野果林物种多样性,并运用扩散系数(C),负二项参数(K),平均拥挤度(m*)与聚块性指数(m*/m)和点格局、双关联g(r)函数研究野苹果种群空间分布类型。结果表明区域植被组成较单一,植物以双子叶植物为主,双子叶植物种类丰富,木本植物多样性低;野苹果种群小尺度上以聚集分布为主,大尺度上随机分布,并且呈现出从聚集分布向随机分布发展的趋势。额敏县新疆野苹果结构不稳定,逐渐向随机分布发展,通过有效管理,促进野苹果种群聚集生长,以促进种群自然修复。To study the plant species diversity and the spatial distribution pattern of the population in Emin county of Xinjiang,the diversity survey was conducted by setting up typical sample plots;species richness index D,Shannon-Wiener index H,Simpson index H',Pielou uniformity index J were used to analyse the species diversity of Malus sieversii vegetation in Emin county,and diffusion coefficient(C),negative binomial parameter(K),mean crowding(m*)and agglomerative index(m*/m)and point pattern,bicorrelation g(r)function were used to analyse the spatial distribution of Malus sieversii populations in the study area.The vegetation composition of the region is relatively homogeneous,with plants dominated by dicotyledonous plants,rich in dicotyledonous plant species and low in woody plant diversity;Malus sieversii populations are mainly distributed in aggregates on small scales and randomly on large scales,and show a tendency to evolve from aggregates to random distributions.The structure of Malus sieversii in Emin county is unstable and gradually moving towards random distribution,and the aggregated growth of Malus sieversii populations is promoted through effective management in order to facilitate the natural restoration of the populations.

关 键 词：新疆野苹果 植物物种多样性 空间分布格局 空间关联性 额敏县 

分 类 号：Q948[生物学—植物学]