内蒙古贺兰山自然保护区不同生境下蒙古扁桃种群结构与空间分布  

Population Structure and Spatial Distribution of Prunus mongolica in the Helan Mountains National Reserve of Inner Mongolia

作　　者：杨跃文[1] 季蒙[1] 刘新前[1] 曾宇 任建民[1] 李银祥[1] 王志波[1] 张凤鹤[1] 

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特市010010 [2]内蒙古自治区林业监测规划院,内蒙古呼和浩特市010020

出　　处：《山地学报》2015年第1期42-47,共6页Mountain Research

基　　金：林业公益性行业科研专项经费项目:藻草灌复合植被恢复重建关键技术研究与示范(201404204)~~

摘　　要：针对贺兰山蒙古扁桃种群分布特点,选择3个典型生境下的种群作为研究对象,以现地实测数据为基础,采用统计学方法对其种群结构和空间分布特征进行了研究,以期为该区域的生物多样性保护和资源合理开发利用提供依据。结果表明:生境异质性会对植物个体生长和种群特征产生直接的影响,处于干旱阳坡种群的密度较大,但是灌丛高和冠幅平均直径较小;位于干河床种群的密度最小,但灌丛高和冠幅平均直径较大。所调查样地内均有蒙古扁桃的实生苗存在,种群更新良好并处于稳定状态。贺兰山蒙古扁桃种群在生境适宜的小尺度范围内呈集群分布,且以幼苗和幼树为主,随着空间尺度的放大,种群呈明显的随机分布特征。Based on an investigation into the Prunus mongolica communities distributed in the Helan Mountains of China. There is great significance to master the Prunus mongolica population structures and distribution patterns for the biodiversity conservation and the resource protection and reasonable development in the nature reserve. Three representative samples were set up in different habitats and the population structures and distribution patterns were discussed by using statistical methods. The results showed that the growth of individual plant and population density and spatial structures were distinctly different under the different habitat conditions. There were mang seedling within the scope of invenstigation which indicating the Prunus mongolica population had a better renewal and in a stable state. In addition,we also found that under suitable growth environment and population were dominated by young trees,the population displayed an aggregated distribution pattern. And a random distribution pattern was observed with spatial criterion increasing.

关 键 词：贺兰山 蒙古扁桃 结构 空间分布格局 

分 类 号：Q948[生物学—植物学]