Interactive effects of nitrogen deposition and climate change on a globally rare forest geophyte

IF 4.2 3区 生物学 Q1 PLANT SCIENCES Plant Biology Pub Date : 2024-12-25 DOI:10.1111/plb.13758
B. Ohse, D. Jansen, W. Härdtle, A. Fichtner
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氮沉降与气候变化对全球珍稀森林地植物的交互作用
氮沉降和气候变化都威胁着全球生物多样性。然而,我们对这些全球变化驱动因素之间的相互作用如何影响自然栖息地内的特殊物种(如地植物)的个体和种群的理解仍然有限。通过5年的不同气候梯度试验,研究了氮、干旱和变暖对德国北部落叶林中全球珍稀森林地植物spathacea(百合科)种群活力(平均叶长、叶密度、开花概率)和形态生理性状(如叶片和球茎大小、叶片和球茎的氮分配)的交互效应。在叶片出芽前几个月,施氮量对叶片的平均生长和密度没有影响,但温暖和干燥的环境对叶片的平均生长和密度有促进作用。施氮增加了单株向地下鳞茎的氮分配。重要的是,施氮对形态生理性状的影响依赖于增温和干旱,施氮植株在秋暖冬后叶长增加,比叶和鳞茎氮浓度降低。这表明,在变暖诱导的生长过程中,氮沉降可能部分补偿了氮需求的增加,尽管这种促进生长的相互作用(尚未)反映在种群活力中。我们的研究结果强调了考虑多个全球环境变化驱动因素和整个植物视角(地上和地下特征)对于预测(濒危)森林春季地植物的长期生长响应和制定适应的长期保护策略的重要性。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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