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高寒草甸植物群落功能属性与土壤细菌多样性关系
Association of soil bacterial diversity with plant community functional attributes in alpine meadows

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赵兴鸽 1   张世挺 2   牛克昌 1 *  
文摘 理论预测植物多样性与土壤理化因子共同影响土壤微生物多样性时空变化.大量研究发现,植物物种多样性与土壤微生物多样性之间相关性不强.本研究在青藏高原高寒草甸三个研究点,调查了4个不同生境植物群落组分种的关键功能性状,分析了土壤细菌多样性变化与植物群落功能组成(群落水平性状值)和结构(性状多样性)变异间的关系.结果表明,土壤细菌优势类群分布因生境而异;但总体上植物群落水平性状和性状多样性变异能解释土壤细菌多样性变化,其解释量(46%)与土壤理化因子所解释相当;土壤细菌多样性随植物群落水平的高度、比叶面积和叶片磷含量及其多样性的增大而增加,与群落水平叶片干物质含量呈负相关关系.研究结果支持植物群落功能属性变异能解释土壤微生物多样性变化的理论预测,为理解土壤微生物多样性的形成和变化机制提供了新视角.
其他语种文摘 The interaction between plant diversity and soil physicochemical factors has been predicted to influence the variation in soil microbial diversity across space and time; however, only limited robust evidence has been found to support this prediction at broad scale. We examined the relationships between plant community functional attributes (i.e., community-weighted mean (CWM) and functional trait diversity (FD)) and soil microbial diversity in Tibetan alpine meadows under different environmental regimes. Soil bacterial diversity was weakly associated with plant species diversity but was significantly associated with both CWM and FD of five key functional traits, explaining nearly half of the variation in soil bacterial diversity. Soil bacterial diversity was positively associated with CWM and FD of plant height, leaf specific area, and leaf phosphorus but was negatively associated with CWM of leaf dry matter content. These results provide robust evidence supporting the theoretical prediction that the plant community functional attributes can explain variation in soil bacterial diversity. In addition, these results provide novel insights that could facilitate the understanding of the mechanisms of assembly of soil microbial diversity.
来源 中国科学. 生命科学 ,2020,50(1):70-80 【核心库】
DOI 10.1360/SSV-2019-0072
关键词 高寒草甸 ; 土壤理化因子 ; 群落构建 ; 功能性状 ; 功能组成 ; 性状多样性 ; 物种多样性
地址

1. 南京大学生命科学学院, 南京, 210023  

2. 兰州大学生命科学学院, 兰州, 730000

语种 中文
文献类型 研究性论文
ISSN 1674-7232
学科 植物学
基金 国家自然科学基金 ;  中央高校基本科研业务费专项资金
文献收藏号 CSCD:6691089

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引证文献 10

1 王宇彤 青藏高原高寒草甸土壤环境对线虫功能多样性的影响 生物多样性,2020,28(6):707-717
被引 8

2 张杰雪 高寒地区人工草地土壤微生物群落对不同种植方式和年限的响应 草地学报,2021,29(2):270-280
被引 13

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