联合国人居署：2025年抓住城市机遇：加强国家自主贡献三步指南报告3.0（英文版）

Urban areas are where many of today’s challenges converge, from inadequate housing and basic services to growing exposure to floods, heat, and sea level rise. But they are also where solutions are abundant. Cities are spaces of innovation and leadership, where governments, communities, and practitioners are implementing solutions and responses that connect climate action with daily realities. This potential remains underrepresented in many national climate plans, but countries have a clear ch