Policy Instruments to Foster NBS Implementation

Abstract

Economic and market-based instruments are not “the” answer for nature-based solutions (NBS) in cities, but they are “part” of the answer. Regulatory instruments are needed when specific behaviors must be avoided. Voluntary instruments may be effective, especially at the local scale, but do not often guarantee the pursued performance result. Economic instruments, if well designed, implemented, and used, often have a comparative advantage in terms of efficiency and performance. They are also a source of funding for financing NBS. Too many policy experts and decision-makers are ready to propose public expenditure and subsidies, including for urban policies, and for policies in favor of natural capital, ecosystems services, and biodiversity. Yet, they too often forget to indicate where the revenues to finance the initiatives must come from, however excellent and ambitious they might be. Without using also economic instruments in the policy portfolio, many objectives for sustainable cities will be much more difficult to achieve, especially in the perspective of the Paris Agreement on climate change and of the UN Agenda 2030 with its Sustainable Development Goals.