巴丹吉林沙漠东缘主要灌木数量特征及空间分布  

Analysis of quantitative characteristics and spatial distribution for main shrubs on the eastern edge of the Badain Jaran Desert

作　　者：姜亚东 吕世杰[2] 刘红梅[3] 娜仁花 刘昕宇 Jiang Yadong;Lv Shijie;Liu Hongmei;Narenhua;Liu Xinyu(Inner Mongolia Autonomous Region Geological Survey Institute,Hohhot 010018,China;Science Faculty,Inner Mongolia Agricultural University,Hohhot 010018,China;Inner Mongolia Autonomous Region Forestry Sciences Institute,Hohhot 010010,China;Inner Mongolia Autonomous Region Natural Resources Supervision and Protection Center,Hohhot 010020,China;Guangxi Normal University,Guilin 541006,Guangxi,China)

机构地区：[1]内蒙古自治区地质调查研究院,内蒙古呼和浩特010018 [2]内蒙古农业大学理学院,内蒙古呼和浩特010018 [3]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [4]内蒙古自治区自然资源督察保障中心,内蒙古呼和浩特010020 [5]广西师范大学,广西桂林541006

出　　处：《中国沙漠》2023年第3期295-304,共10页Journal of Desert Research

基　　金：内蒙古自治区自然科学基金项目(2019MS03035,2021MS03042)。

摘　　要：荒漠植被是极端大陆性干旱气候下形成的以灌木、半灌木为主的植被类型,基于对严酷环境的耐受能力和生态适应过程,形成了特有的表型可塑性和生态响应策略。以巴丹吉林沙漠东缘硬质沙地植被为研究对象,采用样地和尺度构造双因素试验设计,对比分析了主要种群适应基础和空间分布状态。结果表明:梭梭(Haloxylon ammodendron)耐贫瘠、抗风沙使得冠幅直径和高度表现较高,白刺(Nitraria tangutorum)通过捕获流沙增加自己的株丛茎,红砂(Reaumuria songarica)种子萌发和幼苗定植能力强导致出现频次较高;三者在植物群落地位和作用依次降低。白刺和梭梭种群空间分布主要以母株为中心,沿着合成风向扩散;红砂种群空间分布尽管受结构性因素影响,但是集中连片分布形式较弱;3个植物种群整体空间分布主要受结构因素影响,呈现出斑块镶嵌分布,物种界限消失。梭梭、白刺和红砂植物种群对环境的适应基础差异能够通过数量特征相关指标体现,其在植物群落中的地位和作用依次降低;单一种群空间分布能够反映母株为中心的扩散形式,复合种群空间分布反映的空间协同适应情况,呈现出斑块镶嵌分布,物种界限消失。The Badain Jaran Desert is the third largest desert in China,which typical desert vegetation is a shrub and semi-shrub dominated vegetation type formed under extreme continental arid climate,and its tolerance to harsh environments and ecological adaptation process have formed unique phenotypic plasticity and ecological response strategies.In order to explore the adaptive basis and spatial distribution status of major populations,this study focused on the vegetation grown on the hard surface of sandy land on the eastern edge of the Badain Jaran Desert,using a two-factor experimental design of sample area and scale construction,combined with comparative and geostatistical analysis,the preliminary conclusions are as follows.Haloxylon ammodendron is resistant to barrenness and sandstorms,resulting in a high crown diameter and height performance.Nitraria tangutorum increases its own diameter of bunch by capturing flowing sand.Reaumuria songarica has strong seed germination and seedling planting ability,resulting in a higher frequency of occurrence.The status and role of the three species in the plant community decrease in order.The spatial distribution of N.tangutorum and H.ammodendron populations is mainly centered on the mother plant and spreads along the prevailing wind direction,while the spatial distribution of R.songarica populations is weakly concentrated even under the effect of structural factors.The overall spatial distribution of the three plant populations is mainly affected by structural factors,presenting a mosaic distribution pattern,and the boundaries between species disappear.In summary,the differences in the adaptation basis of H.ammodendron,N.tangutorum,and R.songarica populations to the environment can be reflected by quantitative characteristic indicators.Their status and role in the plant community decrease in order.The spatial distribution of a single population can reflect the diffusion pattern centered on the mother plant,and the spatial distribution of composite populations reflects the spati

关 键 词：巴丹吉林沙漠 主要种群 数量特征 空间分布 

分 类 号：Q948.1[生物学—植物学]