FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2922769034> ?p ?o ?g. }

• W2922769034 abstract "PDF HTML阅读 XML下载 导出引用 引用提醒 荒漠绿洲过渡带柽柳种群结构与空间格局动态 DOI: 10.5846/stxb201711262112 作者: 作者单位: 塔里木大学植物科学学院,塔里木大学植物科学学院,塔里木大学植物科学学院,塔里木大学植物科学学院,塔里木大学植物科学学院,塔里木大学 作者简介: 通讯作者: 中图分类号: 基金项目: 兵团应用基础研究（2015AG006）；国家自然科学基金项目（31560182，31060066） Dynamic changes of spatial pattern and structure of the Tamarix ramosissima population at the desert-oasis ecotone of the Tarim Basin Author: Affiliation: College of Plant Science,Tarim University,Alar,College of Plant Science,Tarim University,Alar,College of Plant Science,Tarim University,Alar,College of Plant Science,Tarim University,Alar,College of Plant Science,Tarim University,Alar,College of Plant Science,Tarim University,Alar Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:在塔克拉玛干沙漠北缘荒漠绿洲过渡带设置1 hm2研究样地，应用相邻格子法进行每木调查，从径级结构、空间分布格局、生命表、存活曲线和时间序列等方面研究柽柳种群结构与空间格局动态及其形成机理。结果表明：荒漠绿洲过渡带柽柳群落结构简单、物种稀少，多为单优群落。柽柳种群径级与高度结构均呈纺锤型，属衰退型种群；存活数、期望寿命（ex）随径级增加而降低，存活曲线接近DeeveyⅡ型，小径级死亡率、消失率与高度级失稳率较高，未来小径级、大径级灌木数量分别随时间推移减少与显著增多，更新资源匮乏使种群走向衰败。柽柳种群空间格局总体上为聚集分布，幼苗、小径级灌木为聚集分布，中、大径级灌木则为随机分布；不同径级的空间格局随尺度变化明显不同，小径级与大径级灌木分别在 < 3 m、 < 13 m和17-36 m尺度内呈随机分布，其他尺度均呈聚集分布，而中等径级灌木在研究尺度内呈随机分布，这是其繁殖特性、种内竞争、生境异质性与生态适应的结果。小径级与中等径级灌木、小径级与大径级灌木空间关联性分别在≥ 9 m、7-47 m空间尺度上相互排斥，致使幼小径级生长发育受抑而影响种群稳定。种群多度分布与环境的多元统计分析表明土壤水分、氮素是限制柽柳种群生长、分布和造成种群更新困难、衰退的主要因子。 Abstract:Tamarix ramosissima is perennial shrub with strong resistance to drought, salinity, and wind. As one of the ecological keystone species of the Tarim Desert natural ecosystem, it plays a dominant role in maintaining the stabilized structure and function of the desert ecosystem and protecting the ecological safety of the oasis. To illuminate the ecological characteristics of a T. ramosissima population and to better understand the effects of biological and environmental factors on its population distribution, we studied the population structure, life table, survivorship curve, quantitative dynamics, and spatial distribution patterns of a T. ramosissima population at the desert-oasis ecotone of the Tarim Basin, Xinjiang, China. Ensuring the wise use, conservation, and preservation of the ecological bushwood in the Tarim Basin was the goal of this study. The age structure, life table, survivorship curve, and time sequence prediction of the T. ramosissima population were determined to analyze its population structure and dynamics. A simple community structure and a sparse species composition were found in the T. ramosissima at the desert-oasis ecotone of Tarim Basin. The age structure of the T. ramosissima population had a spindle-type shape with a low percentage of younger individuals, indicating that the population is likely to decline continuously. The number of surviving individuals and life expectancy of the T. ramosissima population monotonically decreased with increasing size class. The survivorship curve generally matched with Deevey Ⅱ type. Small size shrubs are always accompanied with higher mortality rates and hazard rates, while highness class structure indicated low shrubs had higher lost stable rate. Seedlings could not be regenerated in time. The number of large size shrubs increased significantly with community development, which accelerates the shrunk of population size. This species generally had a clumped distribution pattern. Nevertheless, this pattern gradually changed over time from a clumped to a random pattern as shrubs matured from young to middle-aged to old-growth shrubs. Spatial variations of different growth stages changed obviously with different scales. Small size shrubs and large size shrubs had random distributions at scales of 0-3 m, 0-13 m and 17-36 m, respectively. They showed aggregated distributions at other scales. Mid-sized shrubs had a random distribution at all scales, which was related to habitat heterogeneity, reproductive characteristics, intraspecific competition, and ecological adaptation. Results of the spatial association analysis showed that small size shrubs were significantly negatively associated (mutually exclusive) to mid-size shrubs at scales ≥ 9 m, to large size shrubs at scales of 7-47 m, which were not conducive to the growth and regeneration of small individuals, further to affect population stability. Correlation and stepwise regression analysis between environmental factors and abundance distribution showed that the soil water and nitrogen contents were the main factors that restricted the growth, distribution, and regeneration. 参考文献 相似文献 引证文献" @default.
• W2922769034 created "2019-04-01" @default.
• W2922769034 creator A5000453341 @default.
• W2922769034 creator A5027033731 @default.
• W2922769034 creator A5035752631 @default.
• W2922769034 creator A5043961566 @default.
• W2922769034 creator A5079492936 @default.
• W2922769034 creator A5081129642 @default.
• W2922769034 creator A5086605734 @default.
• W2922769034 date "2019-01-01" @default.
• W2922769034 modified "2023-10-18" @default.
• W2922769034 title "Dynamic changes of spatial pattern and structure of the Tamarix ramosissima population at the desert-oasis ecotone of the Tarim Basin" @default.
• W2922769034 doi "https://doi.org/10.5846/stxb201711262112" @default.
• W2922769034 hasPublicationYear "2019" @default.
• W2922769034 type Work @default.
• W2922769034 sameAs 2922769034 @default.
• W2922769034 citedByCount "0" @default.
• W2922769034 crossrefType "journal-article" @default.
• W2922769034 hasAuthorship W2922769034A5000453341 @default.
• W2922769034 hasAuthorship W2922769034A5027033731 @default.
• W2922769034 hasAuthorship W2922769034A5035752631 @default.
• W2922769034 hasAuthorship W2922769034A5043961566 @default.
• W2922769034 hasAuthorship W2922769034A5079492936 @default.
• W2922769034 hasAuthorship W2922769034A5081129642 @default.
• W2922769034 hasAuthorship W2922769034A5086605734 @default.
• W2922769034 hasConcept C144024400 @default.
• W2922769034 hasConcept C149923435 @default.
• W2922769034 hasConcept C151730666 @default.
• W2922769034 hasConcept C185933670 @default.
• W2922769034 hasConcept C18903297 @default.
• W2922769034 hasConcept C199877563 @default.
• W2922769034 hasConcept C205649164 @default.
• W2922769034 hasConcept C2776289648 @default.
• W2922769034 hasConcept C2780505049 @default.
• W2922769034 hasConcept C2908647359 @default.
• W2922769034 hasConcept C2994520453 @default.
• W2922769034 hasConcept C86803240 @default.
• W2922769034 hasConceptScore W2922769034C144024400 @default.
• W2922769034 hasConceptScore W2922769034C149923435 @default.
• W2922769034 hasConceptScore W2922769034C151730666 @default.
• W2922769034 hasConceptScore W2922769034C185933670 @default.
• W2922769034 hasConceptScore W2922769034C18903297 @default.
• W2922769034 hasConceptScore W2922769034C199877563 @default.
• W2922769034 hasConceptScore W2922769034C205649164 @default.
• W2922769034 hasConceptScore W2922769034C2776289648 @default.
• W2922769034 hasConceptScore W2922769034C2780505049 @default.
• W2922769034 hasConceptScore W2922769034C2908647359 @default.
• W2922769034 hasConceptScore W2922769034C2994520453 @default.
• W2922769034 hasConceptScore W2922769034C86803240 @default.
• W2922769034 hasIssue "1" @default.
• W2922769034 hasLocation W29227690341 @default.
• W2922769034 hasOpenAccess W2922769034 @default.
• W2922769034 hasPrimaryLocation W29227690341 @default.
• W2922769034 hasRelatedWork W2082521588 @default.
• W2922769034 hasRelatedWork W2328490948 @default.
• W2922769034 hasRelatedWork W2375469785 @default.
• W2922769034 hasRelatedWork W2408936044 @default.
• W2922769034 hasRelatedWork W2596077764 @default.
• W2922769034 hasRelatedWork W2922769034 @default.
• W2922769034 hasRelatedWork W3142382664 @default.
• W2922769034 hasRelatedWork W3150925067 @default.
• W2922769034 hasRelatedWork W323935508 @default.
• W2922769034 hasRelatedWork W1969965549 @default.
• W2922769034 hasVolume "39" @default.
• W2922769034 isParatext "false" @default.
• W2922769034 isRetracted "false" @default.
• W2922769034 magId "2922769034" @default.
• W2922769034 workType "article" @default.