Strategies and Policies Parks Strategy Find out about the Dublin City Parks Strategy. Tree Strategy Find out about the Dublin City Tree Strategy. Biodiversity Action Plan 2015-2020 Find out about Dublin City's Biodiversity Action Plan 2015-2020. Invasive Species Action Plan 2016-2020 Find out about Dublin City Invasive Species Action Plan. Liberties Greening Strategy Find out about the Liberties' Greening Strategy.