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草业学报 ›› 2013, Vol. 22 ›› Issue (6): 321-327.DOI: 10.11686/cyxb20130638

• 研究简报 • 上一篇    下一篇

荒漠草原区围封草地群落特征及其形成机制

肖绪培1,宋乃平1,2*,谢腾腾1,方楷2   

  1. 1.宁夏大学资源环境学院,宁夏 银川 750021;
    2.西北退化生态系统恢复与重建省部共建教育部重点实验室,宁夏 银川 750021
  • 出版日期:2013-12-20 发布日期:2013-12-20
  • 通讯作者: 肖绪培(1989-),男,河南濮阳人,在读硕士。E-mail:xiaoxp_z@163.com
    *通讯作者。E-mail:songnp@163.com
  • 作者简介:肖绪培(1989-),男,河南濮阳人,在读硕士。
  • 基金资助:
    国家重点基础研究计划前期专项(2012CB723206)和国家自然科学基金(30960075)资助。

Formation mechanism and community characteristics of fenced grassland in desert steppe

XIAO Xu-pei1, SONG Nai-ping1,2, XIE Teng-teng1, FANG Kai2   

  1. 1.School of Resource and Environment, Ningxia University, Yinchuan 750021, China;
    2.Key Laboratory Ministry of Education of Restoration and Rehabilitation for the Degraded Ecosystem in Northwestern China, Ningxia University, Yinchuan 750021, China
  • Online:2013-12-20 Published:2013-12-20

摘要: 以宁夏盐池9年围封草地为对象,研究围封草地群落特征和土壤水分变化。结果表明,研究区具有异质性较高的植被群落特征,并且呈以长芒草+蒙古冰草群落、白草群落和赖草群落3个群落镶嵌分布的空间格局;土壤水分是影响该地区植被生长的关键生态因子,它对围封草地植物群落特征的影响程度不同,其中对生物量、高度和盖度影响较大,而对物种丰富度影响较小;植物群落的空间分布格局是群落特征形成的主要原因,而3种群落内各自土壤水分的空间变异特性使得各群落内部的植被生长状况差异也较大。

Abstract: The community characteristics and soil moisture of 9-year fenced grassland in Yanchi county were studied. Vegetation community characteristics of the fenced grassland had high heterogeneity and presented a mosaic distribution of three plant communities (Stipa bungeana+Agropyron mongolicum, Pennisetum centrasiaticum, and Leymus secalinus). Soil moisture was the key impact factor for vegetation growth in fenced grassland, and soil moisture influenced the community characteristics to different degrees. The soil moisture had great influence on the biomass, vegetation height and coverage, but had little influence on the species richness. The community spatial distribution pattern of fenced grassland was the main factor influencing community characteristics and the spatial variability of soil moisture of the three plant communities caused different vegetation growth within each plant community.

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