Human activities have increased the input of nitrogen and phosphorus into riverine systems. These inputs can increase algal growth that degrades aquatic ecosystems. We constructed a global database of diffuse loads (kg) and yields (kg ha⁻¹ yr⁻¹) of dissolved and total nitrogen and phosphorus forms for 7 years (centred around 2008) in 1,421 catchments. Yields were calculated from 640,950 measurements that were checked, filtered and harmonized from readily available sources. We used the yield data to create a georeferenced model to calculate yields of nitrogen and phosphorus forms across 6,020 catchments, globally. The database can be used to assess and inform policy to reduce nitrogen and phosphorus losses from land to freshwater, improve nutrient use efficiency on farms, and help calibrate global models being used to explore scenarios such as nutrient management efficiency in a changing climate. The source data and R code are provided at https://doi.org/10.25400/lincolnuninz.11894697.

中文翻译：

---

全球扩散河流氮磷负荷和产量数据库

人类活动增加了向河流系统输入的氮和磷。这些投入会增加藻类的生长，从而使水生生态系统退化。我们构建了一个扩散负荷 (kg) 和产量 (kg ha ^-1  yr ^-1) 7 年（以 2008 年为中心）在 1,421 个集水区形成的溶解和总氮和磷。产量是根据从现成的来源检查、过滤和协调的 640,950 次测量计算得出的。我们使用产量数据创建了一个地理参考模型，以计算全球 6,020 个流域的氮和磷形式的产量。该数据库可用于评估和通知政策，以减少从土地到淡水的氮和磷损失，提高农场的养分利用效率，并帮助校准用于探索气候变化中养分管理效率等情景的全球模型。源数据和 R 代码在 https://doi.org/10.25400/lincolnuninz.11894697 提供。