草地学报

草地学报 ›› 2018, Vol. 26 ›› Issue (5): 1084-1090.DOI: 10.11733/j.issn.1007-0435.2018.05.007

• 研究论文 • 上一篇    下一篇

库车山区新疆假龙胆适生地植物群落多样性及其环境解释

常凤1,2,3, 刘彬1,2,3, 刘若坤1,2,3, 马燕宁1,2,3, 雷维1,2,3   

  1. 1. 新疆师范大学干旱区植物逆境生物学实验室, 新疆 乌鲁木齐 830054;
    2. 新疆特殊环境物种保护与调控生物学实验室, 新疆 乌鲁木齐 830054;
    3. 新疆师范大学生命科学学院, 新疆 乌鲁木齐 830054
  • 收稿日期:2018-05-04 修回日期:2018-09-01 出版日期:2018-10-15 发布日期:2018-11-06
  • 通讯作者: 刘彬
  • 作者简介:常凤(1994-),女,河南商丘人,硕士研究生,主要从事植物生态学研究,E-mail:1837146869@qq.com
  • 基金资助:
    新疆师范大学校级重点实验室干旱区植物逆境生物学实验室开放课题（XJNUSYS112017B06）；新疆师范大学博士启动基金项目（XJNUBS1813）资助

Plant Community Diversity and Environmental Interpretation of Adaptive Region of Gentianella turkestanorum in Kuche Mountain Area

CHANG Feng1,2,3, LIU Bin1,2,3, LIU Ruo-kun1,2,3, MA Yan-ning1,2,3, LEI Wei1,2,3   

  1. 1. Laboratory of Plant Stress Biology in Arid Regions, Urumqi, Xinjiang 830054, China;
    2. Xinjiang Special Environment Protection and Regulation Biology Laboratory Urumqi, Xinjiang 830054, China;
    3. College of Life Sciences, Xinjiang Normal University, Urumqi, Xinjiang 830054, China
  • Received:2018-05-04 Revised:2018-09-01 Online:2018-10-15 Published:2018-11-06

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摘要： 采用相关分析和RDA排序法分析了天山南坡中段库车山区新疆假龙胆适生地植物群落多样性特征及其环境影响因子。结果表明，在新疆假龙胆适生地植物群落的24个样地中，共记录到物种87种，隶属于20科54属；共有10种植物群落类型，其结构组成及物种多样性组成是不同的，分布较广的物种为菊科、禾本科、豆科和蔷薇科。各群落物种多样性指数中，Simpson指数最高，各样地间多样性指数测值变幅较大。群落物种多样性指数及种群数量特征与环境因子的相关性分析表明，群落物种Margalef丰富度指数显著受土壤全N、全P的影响；群落物种Simpson多样性指数显著受海拔、土壤总盐的影响；群落中新疆假龙胆的重要值及其种群数量受pH的显著影响；群落中新疆假龙胆种群高度显著受有效K、海拔和土壤总盐的影响。RDA分析表明，全N、全P、有效K、pH、海拔是影响群落物种多样性的主要环境因素。

关键词: 物种多样性, 植物群落, 土壤特性, 新疆假龙胆, RDA分析

Abstract: Correlation analysis and RDA ranking method were used to analyze the characteristics of plant community diversity and environmental factors of adaptive region of the Gentianella turkestanorum in the middle section of the southern slope of the Tianshan Mountains. The results showed that 87 species were recorded in 24 plots of the suitable plant communities of Gentianella turkestanorum,belonging to 54 genera of 20 families. The plant functional composition and species diversity were different among 10 plant communities. The widely distributed species are Asteraceae,Gramineae,Leguminosae and Rosaceae. Among the species diversity indices of each community,the Simpson diversity index was the highest,and the diversity index of each species varied greatly. The correlation analysis between community species diversity index and population characteristics and environmental factors showed that the Margalef richness index of community species was significantly affected by the soil total nitrogen content and total phosphorus content. The Simpson diversity index of community species was significantly affected by altitude and soil total salt. The important value and populations of Gentianella turkestanorum in the community were remarkably affected by pH;the population of Gentianella turkestanorum height in the community was significantly affected by the available K,the elevation and total soil salt. RDA analysis further showed that TN,TP,AK,pH and altitude were the main environmental factors affecting community species diversity.

Key words: Species diversity, Plant communities, Soil properties, Gentianella turkestanorum(Gand.) Holub, Redundancy analysis

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