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L’adaptation des zones côtières aux impacts du changement climatique est désormais une urgence. La hausse du niveau des mers et des pressions immobilières va certainement y accroître les risques, selon les prévisions. En quoi les processus nationaux de planification de l’adaptation des pays de l’OCDE peuvent-ils nous aider à répondre à ce défi ? C’est la question à laquelle répond cet ouvrage. Il expose clairement les diverses conceptions du partage des coûts et des responsabilités en matière de gestion des risques côtiers. Il examine ensuite si celles-ci encouragent ou dissuadent les ménages, les entreprises et les différents niveaux de gouvernement d’adopter des comportements qui réduisent les risques. Cet ouvrage décrit les instruments d’action que les autorités nationales peuvent employer pour favoriser une réaction efficiente, efficace et équitable face aux changements qui affectent le littoral. Il s’appuie sur de nouvelles analyses des coûts futurs de la hausse du niveau des mers et sur les principaux résultats de quatre études de cas (Allemagne, Canada, Nouvelle-Zélande et Royaume Uni). 

La présente publication examine les avancées récentes de l’analyse coûts-avantages (ACA) environnementale. Celle-ci correspond à l’application de l’ACA aux projets ou aux politiques qui visent explicitement à améliorer la qualité de l’environnement ou qui ont, d’une manière ou d’une autre, un effet indirect sur les milieux naturels. Cette publication s’appuie sur l’ouvrage précédent de l’OCDE rédigé par David Pearce et al. (2006), qui partait du constat que la conjonction d’un certain nombre d’avancées de l’ACA modifiait la manière dont bien des économistes recommanderaient de mettre en œuvre cet instrument, surtout dans le contexte de projets ou de politiques ayant des impacts environnementaux considérables.Cette publication n’a pas seulement pour principal objectif d’évaluer les progrès accomplis : elle cherche également à déterminer en quoi certaines évolutions illustrent des questions thématiques centrales ayant des conséquences pour l’application concrète de l’ACA environnementale dans le cadre de l’élaboration des politiques et de l’évaluation des projets d’investissement.Le thème sans doute le plus important a trait à la contribution de l’économie du climat face au défi que constitue l’évaluation des mesures publiques visant à atténuer le changement climatique (ou à s’y adapter). Les travaux dans ce domaine ont accru l’intérêt porté au mode d’évaluation des coûts et des avantages à très long terme et ils ont notamment montré à quel point les procédures classiques de détermination du taux d’actualisation social deviennent problématiques dans un contexte intergénérationnel et quelles pourraient être les nouvelles approches requises. La contribution de l’économie du climat a également suscité une réflexion plus poussée sur l’incertitude dans le cadre de l’ACA, en particulier en présence d’effets incertains qui peuvent avoir des impacts (négatifs) de grande ampleur.

This report presents global projections of materials use and their environmental consequences, providing a quantitative outlook to 2060 at the global, sectoral and regional levels for 61 different materials (biomass resources, fossil fuels, metals and non-metallic minerals). It explains the economic drivers determining the decoupling of economic growth and materials use, and assesses how the projected shifts in sectoral and regional economic activity influence the use of different materials. The projections include both primary and secondary materials, which provides a deeper understanding of what drives the synergies and trade-offs between extraction and recycling.The report projects a doubling of global primary materials use between today and 2060. Population and converging per capita income growth drive the growth in materials use. However, structural change, especially in non-OECD countries, and technology improvements partially dampen that growth. Metals and non-metallic minerals are projected to grow more rapidly than other types of materials.

Asian cities are particularly vulnerable to risks associated with natural disasters. While they are exposed to various types of natural hazards, flooding and other water-related disasters pose particularly significant risks and undermine long-term economic growth, especially in coastal cities. Managing such natural disaster risks is an essential component of urban policies in fast-growing Southeast Asian cities, especially as the impacts of climate change worsen.In addition to providing a framework for assessing disaster risk management policies in cities, this report also presents the results of assessment and locally tailored policy recommendations in five cities of different institutional, geographic, socio-economic and environmental contexts in Southeast Asia. They include Bandung (Indonesia), Bangkok (Thailand), Cebu (Philippines), Hai Phong (Viet Nam) and Iskandar (Malaysia). The study highlights that Southeast Asian cities are largely underprepared for natural disaster risks.Through an assessment of disaster risk management (DRM) policies at national and subnational levels, the study aims to enhance urban resilience by: i) identifying policy challenges related to DRM ; ii) assessing the impacts of current DRM policy practices; and iii) proposing more efficient and effective policy options to enhance urban resilience.

Infrastructure worldwide has suffered from chronic under-investment for decades and currently makes up more than 60% of greenhouse gas emissions. A deep transformation of existing infrastructure systems is needed for both climate and development, one that includes systemic conceptual and behavioural changes in the ways in which we manage and govern our societies and economies. This report is a joint effort by the OECD, UN Environment and the World Bank Group, supported by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety. It focuses on how governments can move beyond the current incremental approach to climate action and more effectively align financial flows with climate and development priorities. The report explores six key transformative areas that will be critical to align financial flows with low-emission and resilient societies (planning, innovation, public budgeting, financial systems, development finance, and cities) and looks at how rapid socio-economic and technological developments, such as digitalisation, can open new pathways to low-emission, resilient futures.

The 2009 Commission on the Measurement of Economic Performance and Social Progress ('Stiglitz-Sen-Fitoussi' Commission) concluded that we should move away from over-reliance on GDP when assessing a country’s health, towards a broader dashboard of indicators that would reflect concerns such as the distribution of well-being and sustainability in all of its dimensions. This book includes contributions from members of the OECD-hosted High Level Expert Group on the Measurement of Economic Performance and Social Progress, the successor of the Stiglitz-Sen-Fitoussi Commission, and their co-authors on the latest research in this field. These contributions look at key issues raised by the 2009 Commission that deserved more attention, such as how to better include the environment and sustainability in our measurement system, and how to improve the measurement of different types of inequalities, of economic insecurity, of subjective well-being and of trust.A companion volume Beyond GDP: Measuring What Counts for Economic and Social Performance presents an overview by the co-chairs of the High Level Expert Group, Joseph E. Stiglitz, Jean-Paul Fitoussi and Martine Durand of the progress accomplished since the 2009 report, of the work conducted by the Group over the past five years, and of what still needs to be done.