文献类型：期刊文献

中文题名：乌兰布和沙漠沙冬青群落特征的研究

英文题名：Analysis on Ammopiptanthus mongolicus Community Characteristics in Ulanbuh Desert

作者：董雪[1] 辛智鸣[1] 李新乐[1] 黄雅茹[1] 郝玉光[1]

第一作者：董雪

机构：[1]中国林业科学研究院沙漠林业实验中心

年份：2017

卷号：37

期号：8

起止页码：1627-1634

中文期刊名：西北植物学报

外文期刊名：Acta Botanica Boreali-Occidentalia Sinica

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

基金：中央级公益性科研院所基本科研业务费专项资金(CAFYBB2014MA016);"十二五"农村领域国家科技计划(2012BAD16B0103)

语种：中文

中文关键词：沙冬青;物种多样性;种群联结性;群落稳定性

外文关键词：Ammopiptanthus mongolicus;;species diversity;;population associativity;;community stability

分类号：Q948.122.1;Q948.154

摘要：基于对乌兰布和沙漠地区植被调查数据,采用物种多样性和种群联结性相结合的分析方法,对珍稀植物沙冬青群落生存状况进行分析评价,以揭示群落稳定性及更新演替趋势。结果表明:(1)研究区沙冬青群落的种类组成比较丰富,与沙冬青伴生的植物共有25种,其中灌木12种,草本植物13种。(2)灌木层物种多样性水平较草本层高,但无论是灌木层还是草本层,固定沙丘生境的沙冬青群落物种多样性均较大,物种均较为丰富;物种均匀度减小是群落草本层多样性下降的主要原因。(3)种间总体联结性测定结果显示,沙冬青群落中灌木层种间有轻微正关联;总体竞争性较弱,表明沙冬青在群落中处于优势地位。(4)从种间联结来看,大多数种对为正联结,或联结性较小且均不显著,说明沙冬青作为该群落的建群种,它的分布和存在似乎不受其他物种的影响或所受影响很小,有独立分布特征;但即使联结性不强的物种也可能有较高的相伴出现机率。研究认为,可通过保护和选择与之正联结较强的物种来保护和建立沙冬青生存环境,以维持沙冬青分布群落的稳定性,最终达到实效保护目的。
Based on vegetation investigation data in the Ulanbuh Desert,we used a combination analytical method of species diversity and population connectivity to evaluate the survival status of rare plant community(Ammopiptanthus mongolicus), and to further reveal the stability and update of plant community and its succession trend.The result shows that:(1)the species composition of A.mongolicus community is abundant.There are 25 species associated with the A.mongolicus,including 12 species of shrubs and 13 species of herbaceous plants.(2)Species diversity level of the shrub layer is higher than that of the herb layer.But one thing is similar whether it is shrub or herbaceous that species diversity values of the A.mongolicus community in fixed dune habitat are all very large.The decrease of species uniformity is the main reason for the decrease of herbaceous layer diversity.(3)Interspecific overall association analysis shows that there has a slight positive correlation between the species in the shrub layer.However,even the species with low connectivity may also have a higher chance of accompanying.(4)In the case of inter-specific connections,most species are positively connected or have less connectivity.The interaction relationship between A.mongolicus and other species are very small and non-significant,indicating that the distribution and existence of the plant are not affected by other species and have independent distribution characteristics.The results suggest that we can protect and choose other species which have strong positive associations with A.mongolicus to maintain the living environment of the A.mongolicus community,thus improve the stability of the community, and ultimately achieve the purpose of effective protection.