更适应气候变化的植物物种需要农业扩张才能持续存在
Isis Poinas1,2, Christine N Meynard1, Guillaume Fried2
1CBGP, INRAE, CIRAD, Institut Agro, IRD, Univ Montpellier, Montpellier, France.
Ecology letters
|February 26, 2025
概括
气候变化正在改变农田中的植物群落,有利于耐压物种而不是竞争性物种. 这种转变挑战了农业生态系统.
科学领域:
- 生态生态学 生态生态学
- 农业学是一种农业学.
- 环境科学 环境科学
背景情况:
- 农业集约化和气候变化是已知的导致农田植被变化的驱动因素.
- 大规模农业生态系统中的植物功能变化仍未得到充分描述.
研究的目的:
- 评估植物多样性和农田边缘功能特征的时间变化.
- 研究气候变化和农业实践 (除草剂,施肥,割草) 对这些变化的影响.
主要方法:
- 从2013年到2021年,法国每年对400多个农业田间边缘进行标准化监测.
- 对气候 (变暖,干旱) 和农业强度的时间趋势的分析.
- 评估植物社区的功能性特征反应.
主要成果:
- 观察到明显的时间趋势,即日益增加的变暖和干旱.
- 检测到对农业外展化的趋势较弱或不显著.
- 植物群体表现出功能性变化,竞争性和原始物种的数量下降,耐压物种的数量增加,主要是气候变化造成的.
结论:
- 气候变化是农业生态系统植物群落功能转变的主要驱动因素.
- 选择性力量似乎与农业强化对抗气候变化影响.
- 农业生态系统中的植物群体面临着适应气候和农业压力的挑战.
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