What is it about?
Nitrogen is a critical element for all life and an important fertilizer for plants. But nitrogen can enter the environment from agricultural land, sewage treatment, and fossil fuel combustion and have harmful effects for people and ecosystems. In other words, there can be too much of a good thing. In this study we quantify the sources of nitrogen leakage to the environment for the US and estimate the damage costs of the harmful effects.
Why is it important?
The estimated damages of nitrogen leakage to human health and ecosystems is $81-441 billion per year. The largest damages were: "untended fertilization" of lakes and coastal areas and human respiratory problems resulting from atmospheric nitrogen forms. While there are gaps and uncertainties in the estimate, it is a starting point to inform stakeholders on the costs of nitrogen leakage.
The following have contributed to this page: Dr Michelle L McCrackin