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林业科学 ›› 2014, Vol. 50 ›› Issue (9): 161-166.doi: 10.11707/j.1001-7488.20140922

• 研究简报 • 上一篇    下一篇

神农架土壤微生物群落的海拔梯度变化

张于光1, 宿秀江2, 丛静1 3, 陈展1, 卢慧1, 刘敏超4, 李迪强1   

  1. 1. 中国林业科学研究院森林生态环境与保护研究所 国家林业局森林生态环境重点实验室 北京 100091;
    2. 湖南白云山国家级自然保护区管理局 保靖 416500;
    3. 中南大学资源加工与生物工程学院 长沙 410083;
    4. 五邑大学化学与环境工程学院 江门 529020
  • 收稿日期:2013-07-16 修回日期:2014-08-04 出版日期:2014-09-25 发布日期:2014-09-30
  • 基金资助:

    中央公益型科研院所基本科研业务费专项资金项目(CAFRIFEEP201101);湖北神农架国家级自然保护区本底资源调查子项目;国家自然保护区生物标本资源共享子平台(2005DKA21404)。

Variation of Soil Microbial Community along Elevation in the Shennongjia Mountain

Zhang Yuguang1, Su Xiujiang2, Cong Jing1 3, Chen Zhan1, Lu Hui1, Liu Minchao4, Li Diqiang1   

  1. 1. Key Laboratory of Forest Ecology and Environment of State Forestry Administration Institute of Forestry Ecology, Environment and Protection, CAF Beijing 100091;
    2. Hunan Baiyunshan National Nature Reserve Administration Baojing 416500;
    3. School of Mineral Processing and Bioengineering, Central South University Changsha 410083;
    4. School of Chemical and Environmental Engimeering, Wuyi University Jiangmen 529020
  • Received:2013-07-16 Revised:2014-08-04 Online:2014-09-25 Published:2014-09-30

关键词: 海拔梯度, 土壤微生物群落, 神农架, 磷脂脂肪酸, 分布格局

Abstract:

To understand the microbial community, structure and its elevational patterns, four plant types at different elevations in Shennongjia Mountain, including deciduous broadleaved forest, subalpine coniferous forest, coniferous-broadleaved mixed forest, and subalpine bush, were selected to analyze the soil microbial community structure by phospholipid fatty acid (PLFA) technique. The results showed that a total 24 PLFAs were detected in the soil and the content of total microbial PLFA, bacterial PLFA, fungi PLFA, actinomycete PLFA, and G+ and G- bacterial PLFA in the soil all exhibited a single peak of distribution pattern along altitude. The PLFA content was highest in coniferous-broadleaved mixed forest soil, and lowest in subalpine bush soil. The significant difference (P<0.05) in PLFA content in the soil was detected among subalpine coniferous forest, coniferous-broadleaved mixed forest and subalpine bush soils. Principal component analysis showed the four plant types had obviously different microbial community structure. Pearson relationship and canonical correspondence analysis indicated that the plant Shannon-Wiener index and the soil pH were significantly correlated (P< 0.01) with the soil microbial PLFA content. Thus, plant diversity and soil pH may be the important factors in shaping the microbial elevation patterns.

Key words: elevation gradient, soil microbial community, Shennongjia Mountain, phospholipid fatty acid (PLFA), distribution pattern

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