• Overview
  • Organisers
  • Event Documents
  • Outcome Documents

Nitrogen plays a critical role in food production, ecosystem health, and climate regulation — yet poor nitrogen management leads to pollution, biodiversity loss, ozone depletion and greenhouse gas emissions.

This webinar event will launch two new guidance documents, while profiling a third, from the International Nitrogen Management System (INMS), offering practical tools and approaches for policymakers, practitioners, and stakeholders. The guidance documents share key findings and methodologies and will support governments and institutions in integrating nitrogen management into policies and international commitments, promote best practices through tools and case studies, and strengthen collaboration among scientists, policymakers, NGOs, and industry. Guidance documents are on:

  • National Nitrogen Budgets – provides methods and simple tools to quantify and track nitrogen flows across all parts of the economy and environment on a country level.
  • Nitrogen Impact Assessment Methods – a foundation for improved integrated assessment and policy support on the multiple positive and negative effects of reactive nitrogen at multiple scales (from local, national, regional to global).
  • Measures for Sustainable Nitrogen Management - a menu of policy and technical options to reduce nitrogen losses to the environment efficiently.

Click here to register and join us on Tuesday, 7 October 2025, from 3 PM to 4:30 PM EAT.

The Global Partnership on Nutrient Management (GPNM) provides a platform for governments, UN agencies, research institutes, the private sector, and civil society to build and collaborate on a shared agenda. It aims to mainstream best practices and integrated assessments, ensuring that policymaking and investments across multiple sectors address the challenges of reducing nutrient pollution. GPNM is one of the pillars of the Global Programme of Action for the Protection of the Marine Environment from Land-based Activities (GPA).

The International Nitrogen Management System (INMS) is a developing international process that provides science-based support and guidance on nitrogen-related issues to policymakers globally. The INMS process has been recognised as part of the UN Environment Assembly resolution (UNEP/EA.4/Res.14) on promoting sustainable nitrogen management across the global nitrogen cycle at the national, regional and global levels.

(15:00 – 15:10) Opening Session

  • Welcome Remarks

Isabelle Vanderbeck, Task Manager, International Waters Unit, UNEP.

  • International Nitrogen Management Systems Perspectives

Mark Sutton, Director, GEF/UNEP International Nitrogen Management System (INMS) and Co-Chair of GPNM.

 Presentations

(15:10 – 15:30) 

  • National Nitrogen Budgets

Kentaro Hayashi, Professor, Research Institute for Humanity and Nature, Japan.

(15:30 – 15:50) 

  • Nitrogen Impacts Assessment Methods

 Jill S. Baron, Senior Research Scientist, Natural Resource Ecology Laboratory, Colorado State University.

(15:50 – 16:10) 

  • Measures for Sustainable Nitrogen Management  

 Will J. Brownlie, Senior Nutrient Scientist, UK Centre for Ecology and Hydrology.

(16:10 – 16:25) Q&A session

(16:25 – 16:30) Closing remarks

  • Ning Liu, Programme Management Officer, Source to Sea Pollution Unit, UNEP

 

Webinar recording

INMS Nitrogen Measures Database and INMS Reports & Guidance Documents

Presentations