Global Nutrient Yields

<p dir="ltr">Please see the file 'Description.txt' for data outline and reference to the policies of the data sources.</p><p dir="ltr">Raster files for yields of TN and TP have been added to this dataset in 2025. Note that while generated at a finer scale, than in the paper we would caution their use at scales finer than HydroBasins level 4. Loads for HydroBasins levels 3 and 4 included as csv files.</p><p dir="ltr">Abstract from paper (<a href="https://aus01.safelinks.protection.outlook.com/?url=https://doi.org/10.1002/gdj3.111&data=05|02|Richard.McDowell@lincoln.ac.nz|1ee86fab50184e38e25108de33869434|2ed27e5845164f9ca79794374d2e74c7|0|0|639004850266373749|Unknown|TWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ==|0|||&sdata=8wcmvEYrSiT490OMqwhUdU0vSWdmZGj442gUs3Jv6YI=&reserved=0" target="_blank">https://doi.org/10.1002/gdj3.111</a>)</p><p dir="ltr">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 loads (kg) and yields (kg ha^-1 yr^-1) of dissolved and total nitrogen and phosphorus forms for seven years (centred around 2008) in 1421 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 6020 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.<br></p><p dir="ltr">The file hybas_I03_v1c_EqArea.zip contains yields for N and P species as shapefiles.</p>