Response of plant functional traits to nitrogen enrichment under climate change: A meta-analysis
Response of plant functional traits to nitrogen enrichment under climate change: A meta-analysis
复制标题
气候变化下植物功能性状对氮富集的响应：荟萃分析
DOI：
10.1016/j.scitotenv.2022.155379
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发表时间：
2022-04-28
影响因子：
9.8
通讯作者：
Li, Bo
中科院分区：
文献类型：
--
作者：
Guo, Xiaohui;Liu, Hao;Li, Bo
土壤氮素供应是影响植物功能性状、调节植物形态和生理表现的重要因素。氮对植物的影响可以通过复杂的环境变化来改变。然而，关于氮素和气候变量对植物表现的共同影响，已有相互矛盾的结果报道，这可能归因于实验设置和方法的不同，例如生态系统、持续时间、植物类型和肥料形式。为了阐明气候变化下植物生长对土壤氮素有效性增加的总体反应，采用全球荟萃分析的方法综合了380篇文献，研究了氮素增加与4个气候变量(如大气二氧化碳浓度升高(ECO(2))、干旱、降水和变暖)对生长相关性状(如大小、养分和适合度)的相互作用。结果表明，增施氮肥增加了陆生植物的地上部和根部的大小、营养成分和适合度。N x ECO(2)与干旱对植株整体表现(主要是植株大小)的协同作用和拮抗作用表明，N的效应可以被ECO(2)聚集，并被干旱缓解。氮素和气候变量对植物整体性能的共同影响取决于实验方法、持续时间、生态系统类型或植物功能类型。Nx ECO(2)与Nx干旱、Nx降水和Nx变暖对植物整体表现的拮抗作用主要在温室试验和短期试验(持续时间)中发现
Soil nitrogen (N) supply is essential in influencing plant functional traits and regulating plant morphological and physiological performances. The effects of N on plants can be altered by complex environmental changes. However, conflicting results have been reported on the co-effects of N and climatic variables on plant performance, which may be attributed to differences in experiment setting and approach, e.g., ecosystem, duration, plant type, and fertilizer form. To elucidate the general response of plant performance to increasing soil N availability under climate change, a global meta-analysis was conducted to synthesize 380 publications studying interactions of N enrichment and four climatic variables (e.g., elevated atmospheric CO2 (eCO(2)), drought, precipitation, and warming) on performance-related traits (e.g., size, nutrient, and fitness). Results showed that N enrichment increased shoot and root size, nutrient, and fitness of terrestrial plants. The synergistic interactions of N x eCO(2) and antagonistic interactions of N x drought were found on plant overall performance (mainly on plant size), indicating that the N effects can be aggregated by eCO(2) and mitigated by drought. The co-effects of N and climatic variables on plant overall performance rely on experiment approach, duration, ecosystem type, or plant functional type. Synergistic interactions of N x eCO(2) and antagonistic interactions of N x drought, N x precipitation, and N x warming on plant overall performance were found mainly in greenhouse experiments and short-term experiments (duration