Accelerating Nutrient Cycles at the Riparian Land : Water Interface

河岸带是陆地和水生系统之间的动态界面，最终控制着大量营养元素碳(C)、氮(N)和磷(P)在陆地和海洋之间通过河流的转移。令人担忧的是，随着气候的变化，这些系统的稳定性正在发生变化，因此可能导致养分循环速度加快。这个提议的重点是我们对动态河岸反应界面（RRI）的概念，以及它如何控制从陆地到河流，也许到大气，再到海洋的营养物质的命运。该提案描述了一种方法，该方法将数据丰富的英国研究集水区（苏格兰迪伊、英国伊甸园）与旗舰国际集水区平台（瑞典和德国）结合起来。我们建议开展新的生物地球化学研究和跨地理气候区域的新模型，以评估控制从陆地到水界面的营养物质质量转移的潜在加速的河岸功能，以及这些功能如何随着气候变化而扩大到全球显著的营养循环变化。

Riparian zones are the dynamic interfaces between terrestrial and aquatic systems, ultimately governing transfers of the macronutrients carbon (C), nitrogen (N) and phosphorus (P) between the land and the oceans, via rivers. The concern is that with a changing climate, the stability of these systems is shifting, and potentially the nutrient cycling rates are accelerating as a consequence. This proposal focuses on our concept of the dynamic riparian reactive interface (RRI) and how it governs the fate of nutrients down the system from the land to the river, perhaps to the atmosphere, and onward to the oceans. The proposal describes an approach that combines data-rich UK research catchments (Scottish Dee, English Eden) with flagship international catchment platforms (in Sweden and Germany). We propose to conduct new biogeochemical research and new modelling across geo-climatic regions to evaluate riparian functions controlling the potential acceleration in nutrient mass transfers across the land to water interface and how these may scale to globally-significant changes in nutrient cycles as our climate changes.