数字农科院2.0

High hydraulic safety, water use efficiency and a conservative resource-use strategy in woody species of high-altitude environments: A global study

文献类型： 外文期刊

作者： Muhammad Waseem;Yakov Kuzyakov;Marc Carriquí;Christine Scoffoni;Kaiping Zhang;Md Mahadi Hasan;Guang Qian Yao;Lei He;Jing Shao;Fengyuan Mei;Ting shuai Shi;Xiang Wen Fang

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期刊名称： Physiologia Plantarum

ISSN： 0031-9317

年卷期： 2025 年 177 卷 2 期

页码：

收录情况： SCIE（2025版）

摘要： Understanding the impact of altitude on leaf hydraulic, gas exchange, and economic traits is crucial for comprehending vegetation properties and ecosystem functioning. This knowledge also helps to elucidate species' functional strategies regarding their vulnerability or resilience to global change effects in alpine environments. Here, we conducted a global study of dataset encompassing leaf hydraulic, gas exchange, and economic traits for 3391 woody species. The results showed that high-altitude species possessed greater hydraulic safety (Kleaf P50), higher water use efficiency (WUEi) and conservative resource use strategy such as higher leaf mass per area, longer leaf lifespan, lower area-based leaf nitrogen and phosphorus contents, and lower rates of photosynthesis and dark respiration. Conversely, species at lower altitudes exhibited lower hydraulic safety (Kleaf P50), lower water use efficiency (WUEi) and an acquisitive resource use strategy. These global patterns of leaf traits in relation to altitude reveal the strategies that alpine plants employ for hydraulic safety, water use efficiency, and resource, which have important implications for predicting forest productivity and acclimation to rapid climate change.

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