西藏高原湿地植物和土壤细菌多样性及其影响因素分析  

Analysis of plant and soil bacterial diversity and their influencing factors in Tibetan Plateau wetlands

作　　者：欧阳露 巴桑[2,4] 拉多[2,4] 刘小艳 刘贵华[3,4] 刘文治 丁帮璟[3] Ouyang Lu;Ba Sang;Lha Duo;Liu Xiao-Yan;Liu Gui-Hua;Liu Wen-Zhi;Ding Bang-Jing(Research Center for Ecology and Environment of Qinghai-Tibetan Plateau,Tibet University,Lhasa 850000,China;College of Sci-ence,Tibet University,Lhasa 850000,China;Key Laboratory of Aquatic Botany and Watershed Ecology,Wuhan Botanical Garden,Chi-nese Academy of Sciences,Wuhan 430074,China;Center for Carbon Neutrality in the Earth's Third Pole,Tibet University,Lhasa 850000,China)

机构地区：[1]西藏大学青藏高原生态与环境研究中心,拉萨850000 [2]西藏大学理学院,拉萨850000 [3]中国科学院武汉植物园,中国科学院水生植物与流域生态重点实验室,武汉430074 [4]西藏大学地球第三极碳中和研究中心,拉萨850000

出　　处：《植物科学学报》2023年第1期44-52,共9页Plant Science Journal

基　　金：科技基础资源调查专项(2019FY100603);国家自然科学基金(32022051)。

摘　　要：植物和微生物是湿地生态系统的主要组成部分,也是其能量流动和物质循环的重要驱动力。了解湿地植物和土壤微生物的多样性及其关键影响因子,对于维持湿地生态系统的结构和功能有重要意义。本研究对西藏高原26个湿地进行野外调查和实验室分析,以揭示湿地植物与土壤细菌多样性的关系,明确影响植物多样性和土壤细菌多样性的关键因子。结果显示,植物群落特征与土壤细菌多样性显著相关,但驱动土壤细菌多样性变异的主要因素是环境因子而非植物。植物多样性的变异主要受土壤电导率影响,而细菌多样性的变异则与海拔、年降水量、土壤pH值以及植物功能性状(叶片总氮和总碳)相关。Plants and microorganisms are the main components of wetland ecosystems and important drivers of energy flow and material cycling. Understanding the diversity of plants and soil microorganisms and their influencing factors is important for maintaining the structure and function of wetland ecosystems. In this study,we conducted a field investigation and laboratory analysis of 26 Tibetan Plateau wetlands to reveal the relationship between wetland plant diversity and soil bacterial diversity, and to identify key factors affecting both.Results showed that plant diversity was significantly related to soil bacterial diversity, but the main factors driving changes in soil bacterial diversity were environmental factors rather than plants. Plant diversity was mainly affected by soil electrical conductivity, while soil bacterial diversity was influenced by altitude, mean annual precipitation, soil pH, and plant functional traits(leaf carbon content and nitrogen content).

关 键 词：高原湿地 植物 微生物 生物多样性 电导率 

分 类 号：Q948[生物学—植物学]