Below-ground root nutrient-acquisition strategies are more sensitive to long-term grazing than above-ground leaf traits across a soil nutrient gradient

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-04-28 DOI:10.1111/1365-2435.14565

Jinting Cai, Xiaobin Pan, Yingli Xiao, Yue Wang, Guangyin Li, Yao Wang, Minna Zhang, Ling Wang

引用次数: 0

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在土壤养分梯度上，地下根系养分获取策略比地上叶片特征对长期放牧更敏感

了解植物养分获取策略如何在群落水平上对放牧做出响应，对于了解草原的生态系统结构和功能至关重要。然而，很少有研究同时比较地上（叶片）和地下（根系）养分获取策略对长期放牧的响应差异，尤其是在区域尺度上。在这里，我们在10个实验点测量了一组叶片和细根的性状，这些性状在群落水平上与快-慢经济谱系相对应，这些实验点来自放牧与未放牧的配对草地，跨越了土壤养分梯度，涵盖了中国北方三种主要类型的草地。我们发现，在群落水平上，放牧和非放牧地块的叶片和细根性状的变化规律与叶片和根系经济谱一致。放牧对群落水平的叶养分获取策略影响较小，但对群落水平的根养分获取策略影响很大。具体来说，在放牧群落中，根系养分获取策略转向了更多的资源开发利用。此外，土壤养分也促进了叶片和根系养分获取策略的变化，随着土壤养分水平的增加，叶片和根系养分获取策略趋向于更多的资源获取策略。放牧与土壤养分对根系养分获取策略的影响有明显的相互作用，放牧比土壤养分对根系养分获取策略的影响更大。综述。我们的研究结果表明，群落水平的地上和地下资源获取策略对长期放牧的反应完全不一致，地下资源获取策略对长期放牧更为敏感。我们的研究结果还表明，放牧等高强度人为活动可能会强烈改变地下资源获取策略。在期刊博客上免费阅读本文的通俗摘要。

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

期刊介绍： Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.