Details

Autor(en) / Beteiligte

• Suchowska-Kisielewicz, Monika
• Greinert, Andrzej
• Winiwarter, Wilfried
• Kaltenegger, Katrin
• Jędrczak, Andrzej
• Myszograj, Sylwia
• Płuciennik-Koropczuk, Ewelina
• Skiba, Marta
• Bazan-Krzywoszańska, Anna

Titel

The fate of nitrogen in the urban area – The case of Zielona Góra, Poland

Ist Teil von

• The Science of the total environment, 2024-03, Vol.915, p.169930-169930, Article 169930

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• The anthropogenic change of the nitrogen (N) cycle is strongly triggered by urban demand (such as food and meat consumption, energy demand and transport). As a consequence of high population density, impacts on human health through water and air pollution also concentrate on a city environment. Thus, an urban perspective on a predominantly rural pollution becomes relevant. Urban N budgets may be considered less intrinsically connected, so that separation of an agri-food chain and an industry-combustion chain is warranted. Results have been obtained for Zielona Góra, Poland, a city of 140,000 inhabitants characterized by domestic and transport sources and forest-dominated surroundings. In addition to food imports in Zielona Gora amounting to about 30 %, in the suburban area a significant share of N amounting to 41 % is related to fertilizer imports. The remaining imports are in fuel, electronics, textiles, plastics and paper. Most of the agri-food N (45 %) is denitrified in wastewater treatment. N associated with combustion (mainly NOx emissions from vehicles) represents a much smaller share than N entering via the agri-food system, amounting to 22 % of the total N imports. This overall picture is maintained also when specifically addressing the city center, with the exception of mineral fertilizer that plays a much smaller role, with just 7 % of N imports to the city. [Display omitted] •Nr cycle is more affected by human activities than the global carbon cycle.•Exceeding Nr limits has serious consequences for health and environment.•The largest N flows occur along the urban agri-food chain.•Improving Nr circulation is possible by Nr recycling/recovery from waste and sewage.