Climate warming promotes growth in Himalayan alpine cushion plants but threatens survival through increased extreme snowfall

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2025-05-12 DOI:10.1111/nph.70206

Veronika Jandova, Jan Altman, Hana Sehadova, Martin Macek, Pavel Fibich, Adam Taylor Ruka, Jiri Dolezal

引用次数: 0

Abstract

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气候变暖促进了喜马拉雅高山垫层植物的生长，但由于极端降雪的增加，威胁到了它们的生存。

气候变暖促进了适应寒冷的植物的生长和繁殖，但也导致了可能阻碍其性能的极端天气事件。我们在海拔5900米的寒冷干旱的喜马拉雅亚热带地区检验了这些预测，在过去的30年里，这里发生了前所未有的变暖和极端降雪。本研究采集了205株克莱姆氏拉达克拉（Ladakiella klimesii），通过年轮分析气候对其生长和招募的影响。径向生长对夏季温度高度敏感，温暖条件显著促进生长。然而，冬季降水的增加缩短了生长季节，对生长和招募产生了负面影响。暖冬和春季，加上秋季积雪覆盖，有利于招募，而冬末和夏季的极端降雪通过加剧的土壤扰动破坏了生长和招募。我们还发现了生长速度和寿命之间的权衡：在温暖时期生长的植物生长迅速，但寿命较短，而在寒冷条件下生长的植物生长较慢，但持续时间较长，这意味着长期的种群稳定。这些发现强调了生长、寿命和在气候变化中生存之间的复杂关系。虽然变暖促进了生长，但它也可能减少寿命和种群持久性。极端降雪的频率不断上升，给世界上海拔最高的植物带来了新的生存挑战。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.