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The paper evaluates the usefulness of indicators as decision support instruments in planning for sustainable development. It examines key concepts and critical issues in planning for sustainable development and reviews the development of indicators in the last two decades. It evaluates their relevance in four planning functions by means of planning-related criteria. It concludes that indicators are still a long way from making a substantial contribution to planning and proposes broad research directions to improve their contribution. The need for integrated, context-specific theories of planning situations to frame the conceptualization, operationalization and use of indicators is emphasized.

Successfully combating desertification has proven to be a demanding endeavour. Fifteen years since the UNCCD was signed, its implementation record remains poor worldwide and in Mediterranean Europe. Desertification is a complex socio-environmental problem, which requires long-term efforts towards integrating environmental concerns in sectoral and development policies, coordination among sectors, policies, agencies and programmes as well as efficient and effective multilevel collaboration arrangements. It is not accidental that Environmental Policy Integration (EPI) and multi-level governance (MLG) are central notions in the UNCCD neither that it's poor implementation record may partly be due to the difficulties of responding to these challenges. This study explores the role of EPI in combating desertification in MLG contexts. First, it briefly negotiates desertification and the UNCCD emphasizing the EPI and MLG provisions. After presenting the conceptual and methodological framework employed, it offers a broad-brush assessment of the integration of desertification concerns into development policies at the international, EU and Mediterranean member state level and the role of governance and MLG. It concludes that the state of integrating desertification concerns in development policies at all levels is poor and the current mode of governance and MLG are far from the UNCCD ideal of 'good governance'. The low political priority of desertification, several context-specific factors, the general and sectoral mode of governance and the complexities of contemporary MLG contexts explain this poor integration. Future research directions are suggested to advance the state of knowledge on promoting EPI in MLG contexts and provide policy support for combating desertification.

Land-use planning (LUP), an instrument of land governance, is often employed to protect land and humans against natural and human-induced hazards, strengthen the resilience of land systems, and secure their sustainability. The United Nations Convention to Combat Desertification (UNCCD) underlines the critical role of appropriate local action to address the global threat of land degradation and desertification (LDD) and calls for the use of local and regional LUP to combat LDD and achieve land degradation neutrality. The paper explores the challenges of putting this call into practice. After presenting desertification and the pertinent institutional context, the paper examines whether and how LDD concerns enter the stages of the LUP process and the issues arising at each stage. LDD problem complexity, the prevailing mode of governance, and the planning style endorsed, combined with LDD awareness, knowledge and perception, value priorities, geographic particularities and historical circumstances, underlie the main challenges confronting LUP; namely, adequate representation of LDD at each stage of LUP, conflict resolution between LDD-related and development goals, need for cooperation, collaboration and coordination of numerous and diverse actors, sectors, institutions and policy domains from multiple spatial/organizational levels and uncertainty regarding present and future environmental and socio-economic change. In order to realize the integrative potential of LUP and foster its effectiveness in combating LDD at the local and regional levels, the provision of an enabling, higher-level institutional environment should be prioritized to support phrοnetic-strategic integrated LUP at lower levels, which future research should explore theoretically, methodologically and empirically.

Environmental policy and planning problems are inherently complex societal problems whose solution requires the deployment of particular combinations of environmental and human resources to achieve sustainable socio-spatial development. Resources are subject, however, to diverse resource regimes. A stumbling block in devising and implementing solutions is the variance between actual resource regimes and those associated with proposed plans and policies as well as the possibility of combining them optimally. The paper explores how the institutional setting—the numerous and diverse actors and resource regimes involved—affects the output and outcomes of the principal stages of the policy and planning process, it offers proposals for institutional change and it suggests future research directions. Desertification control is analyzed as an illustrative example of a domain where institutional complexity is pronounced and crucial for the feasibility and effectiveness of policy and planning interventions.