Nitrogen is a colorless odorless gas in the air. Although nitrogen by itself is not a problem for humans and the environment, it can combine with other elements, such as oxygen and hydrogen. This creates nitrogen oxides and ammonia, which can be harmful. These nitrogen compounds from agriculture, traffic and industry end up in the air and eventually settle on the ground. This is what we call nitrogen deposition.
Researchers from Utrecht University Shirah Buijnink and Isabella van Schothorst are building monitoring stations at 25 locations to measure nitrogen deposition. They are doing this on the Veluwe and the Utrechtse Heuvelrug, because nature areas are sensitive to the effects of nitrogen deposition. Too much nitrogen is bad for plants, soil and animals and causes a decline in biodiversity.
Nitrogen can end up on the ground in two ways: through rain or as dust. The researchers are using five different setups to measure both forms of nitrogen deposition. The measurement sites have different distances from the Gelderse Vallei - an area with many livestock farms that emit ammonia - to better understand how nitrogen spreads.
The results of these measurements help improve models that predict nitrogen deposition. These data help policymakers take targeted measures to reduce nitrogen emissions.
By researching such complex issues, we contribute to the conservation of nature and the health of people and animals.