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<p>Terrestrial-aquatic interfaces (TAIs) are transitional zones where terrestrial and aquatic ecosystems converge, functioning as “hot spots” and “hot moments” driven by intense land-water-atmosphere-biosphere interactions, cross-scale spatiotemporal dynamics, and exceptionally active biogeochemical cycling. TAIs are disproportionately important to the Earth system, playing a critical role in the interception, transformation, burial, and release of carbon (C) and nitrogen (N). Yet progress is constrained by persistent challenges, including ill-defined boundaries, incomplete mechanistic understanding of coupled C–N cycling, and overly simplified representation in biogeochemical models. To address these, we firstly review the global advances in key processes and mechanisms of C–N cycling in typical TAIs (e.g., riparian zones, lake littoral zones, and coastal zones). Secondly, we synthesize the influences of four major driving factors (physical, chemical, biological, and anthropogenic) on their C–N cycling. Thirdly, we evaluate their implications for climate-change mitigation, water-quality improvement, and the synergies and trade-offs of ecosystem services. Future research must shift paradigms, innovate methods, foster interdisciplinary collaboration, and integrate deep observation, experiment, and modeling to advance Earth system science and sustainable development.</p>

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Biogeochemical cycling of carbon and nitrogen in terrestrial-aquatic interfaces: Mechanisms, driving factors, and eco-environmental significance

  • 期刊论文

  • 发表日期：

    2026年4月21日

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  • Wei Guo,
  • Weiping Tang,
  • Liyuan Sang,
  • Xu Zhang,
  • Wenhong Wang,
  • Anji Li,
  • Yunchao Lang,
  • Xinchu Wang,
  • Hu Ding,
  • Guang-Hui Yu,
  • Cong-Qiang Liu

摘要

Terrestrial-aquatic interfaces (TAIs) are transitional zones where terrestrial and aquatic ecosystems converge, functioning as “hot spots” and “hot moments” driven by intense land-water-atmosphere-biosphere interactions, cross-scale spatiotemporal dynamics, and exceptionally active biogeochemical cycling. TAIs are disproportionately important to the Earth system, playing a critical role in the interception, transformation, burial, and release of carbon (C) and nitrogen (N). Yet progress is constrained by persistent challenges, including ill-defined boundaries, incomplete mechanistic understanding of coupled C–N cycling, and overly simplified representation in biogeochemical models. To address these, we firstly review the global advances in key processes and mechanisms of C–N cycling in typical TAIs (e.g., riparian zones, lake littoral zones, and coastal zones). Secondly, we synthesize the influences of four major driving factors (physical, chemical, biological, and anthropogenic) on their C–N cycling. Thirdly, we evaluate their implications for climate-change mitigation, water-quality improvement, and the synergies and trade-offs of ecosystem services. Future research must shift paradigms, innovate methods, foster interdisciplinary collaboration, and integrate deep observation, experiment, and modeling to advance Earth system science and sustainable development.