气候驱动因素和在叶子发出和开花之间的时间间隔变化的生态影响
Liang Guo1, Xiaowei Liu2, Juha M Alatalo3
1State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Current biology : CB
|July 25, 2023
概括
随着气候变暖的推进,春季的植物活动如叶子发芽和开花等都在推进. 虽然这些事件之间的间隔在大多数物种中保持稳定,但温度敏感度的差异在一些物种中改变了它们,影响了植物健康和生态系统.
科学领域:
- 生态生态学 生态生态学
- 现象学 现象学是指现象学.
- 气候变化生物学 气候变化生物学
背景情况:
- 植物现象学,包括叶子出发和开花,遵循优化适合健康的进化序列.
- 已知温度升温会推进春季现象事件,但对叶子发出与开花的差异影响以及它们的间隔仍然不清楚.
研究的目的:
- 在多种物种中调查变暖对叶子发出和开花之间的时间间隔的影响.
- 为了确定现象变化的大小是否在叶子出来和开花事件之间有所不同.
- 分析叶子发出和开花之间的阶段间隔时间的变化.
主要方法:
- 利用了长期 (1963-2014) 现场数据,包括中国183个物种的11,858个叶子和开花记录.
- 分析了现象事件时间的趋势和叶子发出和开花之间的间隔的持续时间.
- 研究了温度灵敏度 (ST) 在解释阶段间隔变化的作用.
主要成果:
- 叶子发芽和开花的时间都因变暖而提前,这表明强迫条件对冷却的影响更大.
- 尽管温度上升,但大多数研究物种的叶子发芽和开花之间的时间间隔保持稳定.
- 在一些物种中观察到阶段间隔的显著变化,与叶子和花表态的不同温度敏感性相关.
结论:
- 叶子和花的现象学之间的温度敏感度差异可以改变阶段间隔,在叶子第一种物种中缩短它们,在花第一种物种中延长它们.
- 这些现象间隔的变化对物种适应性,生态相互作用和生态系统稳定性有重大影响.
- 了解这些变化对于预测植物对持续气候变化的反应至关重要.
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