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生态学杂志 ›› 2010, Vol. 29 ›› Issue (10): 1907-1911.

• 研究报告 • 上一篇    下一篇

珍稀濒危植物蒙古扁桃群落结构特征

红 雨**,邹林林,朱清芳   

  1. 内蒙古师范大学生命科学与技术学院,呼和浩特 010022
  • 出版日期:2010-10-08 发布日期:2010-10-08

Community structure characteristics of endangered plant Prunus mongolica.

HONG Yu, ZOU Lin-lin, ZHU Qing-fang   

  1. College of Life Science and Technology, Inner Mongolia Normal University, Huhhot 010022, China
  • Online:2010-10-08 Published:2010-10-08

摘要: 针对濒危植物蒙古扁桃(Prunus mongolica)群落的种类组成及其生态类型结构进行了调查。结果表明:蒙古扁桃群落结构层次单一,共有42种植物,隶属23科,以禾本科、蔷薇科、豆科和菊科为主;蒙古扁桃群落随着海拔的升高,株高和冠幅呈现出先增大后减小的趋势。通过群落的β多样性比较得出,随着海拔的升高,蒙古扁桃群落间相似性减小,物种更替速率增大,群落的多样性具有一定的变化规律;相邻群落间生物多样性差异越来越不明显,更替速率也逐渐变慢。通过相关性分析,发现海拔高度与物种丰富度、蒙古扁桃株高密切相关,这是导致蒙古扁桃群落变化的重要因素之一。

关键词: 土地利用和管理, 土壤质量性状, 科尔沁沙地

Abstract: Through the investigation of species composition and ecological type, this paper studied the community structure characteristics of endangered plant Prunus mongolica. The results showed that P. mongolicahad a unitary community structure. A total of 42 species belonging to 23 families were collected, and most of them belonged to Gramineae, Compositae, Rosaceae, and Leguminosae. With the increase of altitude, the plant height and crown width of P. mongolica tended to be increased first and decreased then. There was a negative correlation between the community species richness and altitude. The comparison of β-diversity index showed that with increasing altitude, the similarity among the communities decreased and the species replacement rate increased, while the difference in the biodiversity between adjacent communities was not obvious and the species replacement rate became slow. Correlation analysis showed that the species richness of the community and the plant height of P. mongolica had close correlations with altitude, suggesting that altitude was the important factor leading to the changes of P. mongolica community.

Key words: Land use and management, Soil quality properties, Heerqin sandy land