Zhenya Liu, Yiqing Zhao, Hongyan Yu, Yao Zhao, Huijun Guo, Mei Sun
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The results showed that simulated warming significantly reduced the photosynthetic carbon assimilation capacity and biomass accumulation of S. tabernaemontani, as well as its nitrogen content and vascular bundle density, while it significantly increased the vascular bundle size. The growing season accumulated temperature (AT) and the mean temperature of the hottest month (WT) were the main temperature factors influencing the functional traits of S. tabernaemontani. In summary, simulated warming significantly affected the functional traits of S. tabernaemontani, which demonstrated effective adaptation to warming conditions. As the temperature rises and the light and productivity decrease, S. tabernaemontani prioritizes the supply of limited resources to the underground part to ensure the biomass supply of the reproductive structure. 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引用次数: 0
摘要
气候变暖对湿地生态系统的影响是当前生态学研究的一个焦点。本研究选择了云南省西北部典型的高原湿地--纳帕海湿地作为研究地点,以了解气候变暖条件下高原湿地挺水植物的生长和生存策略。在三个处理(即对照组、2.0±0.5°C和4.0±0.5°C)中使用开顶室(OTC)模拟升温,以研究优势挺水植物Schoenoplectus tabernaemontani的功能性状对模拟升温的响应。结果表明,模拟升温显著降低了S. tabernaemontani的光合碳同化能力和生物量积累,也降低了其氮含量和维管束密度,但显著增加了维管束尺寸。生长季积温(AT)和最热月平均气温(WT)是影响S. tabernaemontani功能性状的主要温度因子。总之,模拟升温对 S. tabernaemontani 的功能性状有明显影响,表明其能有效适应升温条件。随着气温升高,光照和生产力下降,S. tabernaemontani会优先将有限的资源供给地下部分,以确保生殖结构的生物量供应。本研究为揭示高原湿地植物对气候变暖的响应模式和生态适应策略提供了案例。
Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China
The impact of climate warming on wetland ecosystems is a current focal point in ecological research. In this study, the Napahai wetland, a typical plateau wetland in northwest Yunnan Province, was selected as the study site to understand the growth and survival strategies of emergent plants in a plateau wetland under climate warming conditions. Open-top chambers (OTCs) were used to simulate warming in three treatments (i.e., control group, 2.0 ± 0.5°C, and 4.0 ± 0.5°C) in order to study the responses of the functional traits of the dominant emergent plant Schoenoplectus tabernaemontani to simulated warming. The results showed that simulated warming significantly reduced the photosynthetic carbon assimilation capacity and biomass accumulation of S. tabernaemontani, as well as its nitrogen content and vascular bundle density, while it significantly increased the vascular bundle size. The growing season accumulated temperature (AT) and the mean temperature of the hottest month (WT) were the main temperature factors influencing the functional traits of S. tabernaemontani. In summary, simulated warming significantly affected the functional traits of S. tabernaemontani, which demonstrated effective adaptation to warming conditions. As the temperature rises and the light and productivity decrease, S. tabernaemontani prioritizes the supply of limited resources to the underground part to ensure the biomass supply of the reproductive structure. This study provides a case for revealing the response patterns and ecological adaptation strategies of plateau wetland plants to climate warming.
期刊介绍:
Frontiers in Ecology and Evolution publishes rigorously peer-reviewed research across fundamental and applied sciences, to provide ecological and evolutionary insights into our natural and anthropogenic world, and how it should best be managed. Field Chief Editor Mark A. Elgar at the University of Melbourne is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics and the public worldwide.
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