Huang Mengjiao, Reich Peter B, Wang Shaopeng, Feng Yanhao, Hong Pubin, Barry Kathryn E, He Miao, Lyu Shengman, Zhou Shurong, Mohanbabu Neha, Isbell Forest, Hautier Yann
National Observation and Research Station for Shanghai Yangtze Estuarine Wetland Ecosystems, and Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, School of Life Sciences, Fudan University, Shanghai, China.
Basque Centre for Climate Change (BC3), Leioa, Spain.
Nat Commun. 2025 Aug 12;16(1):7445. doi: 10.1038/s41467-025-62691-0.
Global environmental change is causing a decline in biodiversity with profound implications for ecosystem functioning and stability. It remains unclear how global change factors interact to influence the effects of biodiversity on ecosystem functioning and stability. Here, using data from a 24-year experiment, we investigate the impacts of nitrogen (N) addition, enriched CO (eCO), and their interactions on the biodiversity-ecosystem functioning relationship (complementarity effects and selection effects), the biodiversity-ecosystem stability relationship (species asynchrony and species stability), and their connections. We show that biodiversity remains positively related to both ecosystem productivity (functioning) and its stability under N addition and eCO. However, the combination of N addition and eCO diminishes the effects of biodiversity on complementarity and selection effects. In contrast, N addition and eCO do not alter the relationship between biodiversity and either species asynchrony or species stability. Under ambient conditions, both complementarity and selection effects are negatively related to species asynchrony, but neither are related to species stability; these links persist under N addition and eCO. Our study offers insights into the underlying processes that sustain functioning and stability of biodiverse ecosystems in the face of global change.
全球环境变化正导致生物多样性下降，这对生态系统功能和稳定性有着深远影响。目前尚不清楚全球变化因素如何相互作用，从而影响生物多样性对生态系统功能和稳定性的作用。在此，我们利用一项为期24年的实验数据，研究了添加氮（N）、富集二氧化碳（eCO）及其相互作用对生物多样性-生态系统功能关系（互补效应和选择效应）、生物多样性-生态系统稳定性关系（物种异步性和物种稳定性）及其联系的影响。我们发现，在添加氮和富集二氧化碳的情况下，生物多样性与生态系统生产力（功能）及其稳定性仍呈正相关。然而，添加氮和富集二氧化碳的组合削弱了生物多样性对互补效应和选择效应的影响。相比之下，添加氮和富集二氧化碳并未改变生物多样性与物种异步性或物种稳定性之间的关系。在环境条件下，互补效应和选择效应均与物种异步性呈负相关，但均与物种稳定性无关；在添加氮和富集二氧化碳的情况下，这些联系依然存在。我们的研究为面对全球变化时维持生物多样性丰富的生态系统功能和稳定性的潜在过程提供了见解。
