Soil nutrient heterogeneity strengthens the diversity–productivity relationship in tree communities with a potential role for mycorrhizal complementarity

IF 6.3 1区 环境科学与生态学 Q1 ECOLOGY
Yuanzhi Yang, Qiuyue Gong, Ganxin Feng, Jieyi Liu, Xiangdeng Du, Dong Dai, Minxia Liang, Chengjin Chu, Xubing Liu
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引用次数: 0

Abstract

土壤养分异质性加强了树木群落的多样性-生产力关系,并可能在菌根互补中发挥作用
土壤养分的环境异质性可以重塑物种相互作用和资源分配。菌根真菌在树木养分获取中起着核心作用,因此可能介导树木群落对土壤资源空间变化的响应。然而,大多数生物多样性-生产力实验都是在同质条件下进行的,将这种差异最小化,将营养物质视为受控变量,而不是相互作用的生态驱动因素,这限制了我们对自然生态系统中生物多样性-功能关系的理解。在本研究中,我们通过对50公顷的亚热带森林进行实地调查,并结合遮荫室内试验,研究了在异质土壤和均匀土壤条件下,菌根结合如何影响生物多样性-生产力关系,控制树种丰富度、菌根类型组成和土壤养分制度。在野外调查中,土壤养分异质性强化了树种丰富度与群落生产力之间的正相关关系,这种效应在AM和ECM树分布较为均匀的样方中更为明显。在遮荫试验中,土壤养分异质性同样增强了物种丰富度与幼苗生物量之间的正相关关系。在异质营养条件下,AM和ECM混合组合的幼苗生物量更大,菌根定植功能分散程度更高,磷酸酶活性更高。合成。研究结果表明,土壤养分异质性增强了树木群落生物多样性和生产力之间的正相关关系,而菌根的功能互补可能促成了异质性土壤条件下的这种模式。更广泛地说,这项研究强调了地下真菌关联是森林生物多样性-功能关系中重要的、依赖于环境的组成部分。
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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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