Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu 611130, Sichuan, China.
Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark.
Sci Total Environ. 2018 Jul 15;630:181-188. doi: 10.1016/j.scitotenv.2018.02.213. Epub 2018 Feb 22.
Human activity-induced global change drivers have dramatically changed terrestrial phosphorus (P) dynamics. However, our understanding of the interactive effects of multiple global change drivers on terrestrial P pools remains elusive, limiting their incorporation into ecological and biogeochemical models. We conducted a meta-analysis using 1751 observations extracted from 283 published articles to evaluate the individual, combined, and interactive effects of elevated CO, warming, N addition, P addition, increased rainfall, and drought on P pools of plant (at both single-plant and plant-community levels), soil and microbial biomass. Our results suggested that (1) terrestrial P pools showed the most sensitive responses to the individual effects of warming and P addition; (2) P pools were consistently stimulated by P addition alone or in combination with simultaneous N addition; (3) environmental and experimental setting factors such as ecosystem type, climate, and latitude could significantly influence both the individual and combined effects; and (4) the interactive effects of two-driver pairs across multiple global change drivers are more likely to be additive rather than synergistic or antagonistic. Our findings highlighting the importance of additive interactive effects among multiple global change drivers on terrestrial P pools would be useful for incorporating P as controls on ecological processes such as photosynthesis and plant growth into ecosystem models used to analyze effects of multiple drivers under future global change.
人为活动引起的全球变化驱动因素极大地改变了陆地磷（P）的动态。然而，我们对多种全球变化驱动因素对陆地 P 库的相互作用影响的理解仍然难以捉摸，这限制了它们在生态和生物地球化学模型中的应用。我们使用从 283 篇已发表的文章中提取的 1751 个观测值进行了荟萃分析，以评估单独、联合和相互作用的升高 CO2、升温、N 添加、P 添加、增加降雨和干旱对植物（单株和植物群落水平）、土壤和微生物生物量 P 库的影响。我们的研究结果表明：(1) 陆地 P 库对升温和 P 添加的单独影响表现出最敏感的响应；(2) P 添加单独或与同时的 N 添加结合使用时，始终会刺激 P 库；(3) 生态系统类型、气候和纬度等环境和实验设置因素可以显著影响单独和联合作用；(4) 多个全球变化驱动因素的两个驱动因素对之间的相互作用更有可能是相加的，而不是协同的或拮抗的。我们的研究结果强调了多种全球变化驱动因素之间的加性相互作用对陆地 P 库的重要性，这对于将 P 作为控制因素纳入生态系统模型以分析未来全球变化下多种驱动因素的影响非常有用，如光合作用和植物生长等生态过程。
