干旱区研究

干旱区研究 ›› 2013, Vol. 30 ›› Issue (1): 122-128.

• 植物生态 • 上一篇    下一篇

艾比湖湿地自然保护区克隆植物群落空间格局及其对水盐胁迫的响应

 李尝君, 吕光辉, 贡璐, 张海峰, 刘晓星   

  1. 新疆大学资源与环境科学学院，新疆绿洲生态教育部重点实验室，新疆 乌鲁木齐 830046
  • 收稿日期:2012-02-28 修回日期:2012-04-26 出版日期:2013-01-15 发布日期:2013-01-16
  • 作者简介:李尝君（1987-），男，硕士研究生，主要研究方向为干旱区生态.E-mail： ricroot@sina.com
  • 基金资助:

    国家级自然基金项目（41130531，31060061）

Spatial Point Pattern and Response of Clonal Plant Communities to High Drought and Salt Stress in the Ebinur Lake Wetland Nature Reserve, Xinjiang, China

 LI  Chang-Jun, 吕Guang-Hui , GONG  Lu, ZHANG  Hai-Feng, LIU  Xiao-Xing   

  1. Xinjiang Key Laboratory of Oasis Ecology of Ministry of Education, College of Resources and Environmental Sciences, Xinjiang University, Urumqi 830046, China
  • Received:2012-02-28 Revised:2012-04-26 Published:2013-01-15 Online:2013-01-16

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被引次数

20

摘要： 克隆植物对水盐胁迫的响应不仅在个体水平上，在种群分布格局和种群关联水平上也有一定的响应特征。利用Ripley’s K(r)函数和L(r)函数，对艾比湖湿地自然保护区4种克隆草本植物组成的混生群落进行点格局分析和关联分析。结果表明：“密集型”克隆植物花花柴（Karelinia caspia）、芦苇(Phragmites australis)在0~5 m尺度上多为集群分布；“游击型”克隆植物罗布麻（Apocynum venetum）、白麻（Poacynum pictum）在0~1 m尺度上多为随机分布，在1~4.5 m尺度上集群分布，在4.5~5 m尺度上为均匀分布；4种植物间除花花柴和芦苇为负关联关系外，其他多为正关联关系。在较强的水盐胁迫环境下，克隆植物更倾向于集群分布，这与克隆植物的生理整合作用以及种间正关联关系有关。

关键词: 克隆植物, 植物群落, 空间格局, 水盐胁迫, 艾比湖, 湿地自然保护区

Abstract: Clonal plants have some responses to high drought and salt stress not only at the plant individual level, but also at the level of population distribution pattern and population relationship. In this study, the Ripley’s K(r) and L(r) functions and the spatial point pattern analysis were used to research the plant communities consisted of four typical clonal plant species in the Ebinur Lake Wetland Nature Reserve. The results show that the phalanx clonal plant species, such as Karelinia caspia and Phragmites australis, clustered mainly at a scale of 1-5 m, while the guerrilla ones, such as Apocynum venetum and Poacynum pictum, scattered randomly at a scale of 0-1 m, clustered at a scale of 1-4.5 m, and equidistributed at a scale of 4.5-5 m. There was a positive correlation between K. caspia and P. australis with A. venetum and P. pictum, but a negative one between them at a scale of 0-5 m. Under a risk of high drought and salt stress, the clonal plants were more like to cluster together, relating to the physiological integration and positive correlation between these plants.

Key words: clonal plant, plant community, spatial pattern, drought and salt stress, Ebinur Lake, Wetland Nature Reserve