Empirical evidence and theoretical understanding of ecosystem carbon and nitrogen cycle interactions.

ABSTRACT: Interactions between carbon (C) and nitrogen (N) cycles in terrestrial ecosystems are simulated in advanced vegetation models, yet methodologies vary widely, leading to divergent simulations of past land C balance trends. This underscores the need to reassess our understanding of ecosystem processes, given recent theoretical advancements and empirical data. We review current knowledge, emphasising evidence from experiments and trait data compilations for vegetation responses to CO₂ and N input, alongside theoretical and ecological principles for modelling. N fertilisation increases leaf N content but inconsistently enhances leaf-level photosynthetic capacity. Whole-plant responses include increased leaf area and biomass, with reduced root allocation and increased aboveground bio

SUBMITTER: Stocker BD 

PROVIDER: S-EPMC11617667 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature