Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (9): 3331-3342.DOI: 10.11733/j.issn.1007-0435.2026.09.017

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Effects of Simulated Warming on Plant Species Diversity and Ecosystem Multifunctionality in Alpine Meadow

SHI Hui-fang1, LIU Ya-ping1, WANG Fang-ping1, ZHANG Zhong-hua2,3, WANG Zhen2,3, WANG Ying-cheng2,3, MA Li2,3, ZHOU Hua-kun2,3   

  1. 1. College of Ecological and Environmental Engineering, Qinghai University, Xining, Qinghai Province 810016, China;
    2. Northwest Institute of Plateau Biology,Chinese Academy of Sciences, Xining,Qinghai Province 810008,China;
    3. Qinghai Key Laboratory of Cold Restoration Ecology, Xining, Qinghai Province 810008, China
  • Received:2025-11-13 Revised:2025-12-30 Published:2026-09-11

模拟增温对高寒草甸物种多样性和生态系统多功能性的影响

石慧芳1, 刘亚萍1, 王芳萍1, 张中华2,3, 王榛2,3, 王英成2,3, 马丽2,3, 周华坤2,3   

  1. 1. 青海大学生态环境工程学院, 青海 西宁 810016;
    2. 中国科学院西北高原生物研究所, 青海 西宁 810008;
    3. 青海省寒区恢复生态学重点实验室, 青海 西宁 810008
  • 通讯作者: 周华坤, E-mail: hkzhou@nwipb.cas.cn
  • 作者简介:石慧芳(1996-),女,汉族,甘肃白银人,硕士,主要从事全球变化生态学和恢复生态学方面的研究,E-mail:shihf7826@163.com
  • 基金资助:
    青海省重点研发与转化项目(2024-HZ-810);国家自然科学基金项目(32301406,32371684,32160269)资助

Abstract: The relationship between biodiversity and ecosystem functioning has become a central issue in the fields of climate change and biodiversity conservation. The Qinghai-Tibet Plateau represents a globally typical ecologically fragile region, and with the intensification of global climate change, the structure and functioning of alpine meadow ecosystems are undergoing significant alterations. In this study, open-top chamber warming experiments were conducted to comprehensively assess plant species diversity and multiple ecosystem functions. Ecosystem multifunctionality was quantified using the averaging method to explore the relationships among simulated warming, species diversity, ecosystem functions, and multifunctionality. The results showed that warming suppressed the accumulation of aboveground and belowground biomass, while Margalef index, Simpson index, and Shannon-Weiner index decreased significantly (P<0.05). Redundancy analysis indicated that ecosystem multifunctionality was significantly positively correlated with Margalef index, Shannon-Weiner index, and Simpson index (P<0.05), with improvements in these indices accompanying enhancements in ecosystem functioning. Among these, species richness appeared to be a more critical influencing factor compared with species evenness and dominance. This study provides an important theoretical reference for understanding the responses and adaptive mechanisms of alpine meadow ecosystems under global climate change on the Qinghai-Tibet Plateau.

Key words: Tibetan Plateau, Gradient warming, Species diversity, Mean method, Ecosystem multifunctionality

摘要: 生物多样性与生态系统功能的关系已成为气候变化领域和生物多样性保护研究的核心议题。青藏高原是全球典型的生态脆弱区,随着全球气候变化加剧,高寒草甸生态系统的结构和功能正发生显著改变。本研究采用开顶室增温装置,综合调查植物物种多样性和多种生态系统功能,并采用均值法对生态系统多功能性进行量化分析,探讨模拟增温下物种多样性和生态系统功能及多功能性间的关系。结果表明:增温抑制地上和地下生物量的积累,且Margalef指数、Simpson指数和Shannon-weiner指数显著降低(P<0.05)。冗余分析结果显示,生态系统多功能性与Margalef指数、Shannon-weiner指数和Simpson指数呈显著的正相关关系(P<0.05),这些指标的提升伴随着生态系统功能的增强,其中物种丰富度相较于物种均匀度和优势度可能是更为关键的影响因子。本研究可为青藏高原高寒草甸应对全球气候变化的响应和适应机制提供重要的理论参考。

关键词: 青藏高原, 梯度增温, 物种多样性, 平均值法, 生态系统多功能性

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