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Harnessing environmental action and nature-based solutions




  • UNECE has already supported six countries in the Caucasus and Central Asia (Armenia, Azerbaijan, Georgia, Kazakhstan, Kyrgyzstan, Tajikistan and Uzbekistan) in their commitment to restore around 3 million hectares of degraded land by 2030 under the Bonn Challenge. At a Ministerial meeting on 12 October 2021, countries in Eastern and South-Eastern Europe have committed to restore more than 4 million ha of land by 2030 in contribution to the UN Decade on Ecosystem Restoration.


  • Tree planting in urban areas can unlock important benefits: a single tree can store up to 150 kg of CO2 per year, while trees also regulate urban temperatures, help limit erosion and flooding, and contribute to biodiversity. Over 20 cities have already pledged to plant some 11 million trees as part of the Trees in Cities Challenge launched by UNECE and Mayors in 2019.