Description: Policies for Sustainable Use and economy-wide Management of natural Resources (SUMR) throughout the production and consumption system are faced with environmental and socio-economic requirements and regulatory constraints. Based on empirical findings of ongoing trends of resource use, decoupling from economic growth, and transregional problem shifting, the paper outlines a potentially sustainable biophysical basis for production and consumption in the EU. It discusses the main challenges for the major resource groups, describing the specific and the common tasks with regard to biomass, fossil fuels, metals, non-metallic minerals. Adopting a medical metaphor, it suggests that policies for SUMR should follow a dual approach reflecting the long-term need for a main cure of the socio-industrial metabolism in form of a "conditioning" towards a more mature, resource efficient, and renewables based constitution on the one hand, and a fine tuning of selected material flows (e.g. for optimized recycling and control of hazardous compounds) on the other hand. Both strategies are deemed complementary and necessary to reduce environmental impacts and increase the utility of material use. Action required is exemplified with regard to the three pillars of SUMR, i.e. improved orientation, information and incentives.

Description: Objective of this study is to support the development of a Thematic Strategy for Sustainable Use and Management of Resources through the provision of background information, in particular "an estimate of materials and waste streams in the Community, including imports and exports" (Article 8 a 6th EAP) using the method of material flow accounting. It further presents first ideas on how the resource use pattern of the EU can be assessed with regards to priority setting for possible policy measures. By referring to the concept of Industrial Metabolism, resources are defined in a broad sense, embracing the source and sink function of the natural environment, i.e. the provision of raw materials and land, and the absorption of residual materials (waste and emissions). Environmental impacts are associated not only with the extraction, harvesting and catching of raw materials but also with the subsequent production, use and disposal of products and goods. It is the total of environmental impacts associated with the entire life cycle of raw materials which has to be considered. Three generic "management rules" for the sustainable use and management of renewable and non-renewable natural resources are presented and discussed which have been formulated by several political institutions based on scientific literature: 1. The use of renewable resources should not exceed their renewal and/or regeneration rates. 2. The use of non-renewable resources should not exceed the rate at which substitutes are developed (should be limited to levels at which they can either be replaced by physically or functionally equivalent renewable resources or at which consumption can be offset by increasing the productivity of renewable or non-renewable resources). 3. Outputs of substances to the environment (pollution) should not exceed the assimilative capacity of environmental media ("absorption capacities").

Description: In this paper the results of an analysis of the material intensity of advanced composite materials are presented. The analysis is based on the MIPS-concept of the Wuppertal Institute which allows the calculation of the overall material intensity of products and services. It can be shown that the production of one kg of E-Glass fibers is connected with the consumption of 6.2 kg materials, 95 kg water and 2.1 kg oxygen which is of similar size compared to the inputs required in steel production. Material inputs required to produce one kg of p-aramid are 37 kg of materials and 19.6 kg air. Values for carbon fibers are even higher yielding to 61.1 kg of abiotic materials and 33.1 kg of air. Similarly, the production of epoxy resins is connected with larger material flows than the production of polyester resins. Of core materials, inputs per kg for PVCfoam exceed those in PUR-foam production by a factor of 1.4 in water to 2.3 in abiotic material consumption. However, ecologically decisive are not the inputs per kg but the material input per service unit. Therefore, the material input per service unit computed for the body of a passenger ship and a robot arm are compared with alternative steel and aluminium versions. Both examples show that in the case of significant inputs during the user phase of products, even a more material intensive investment in the production phase can yield significant ecological benefits over the whole life-cycle compared to metal versions. Improvements can easily reach a factor of two albeit significant potential for engine optimizations have still been neglected. Results already include the actual recycling quota of metals whereas for composites only virgin material has been calculated as any form of real recycling does not actually exist but only certain types of downrecycling. Of those treatment options, first material recycling and second the use in blast furnaces would lead to better results in resource productivity than incineration and landfills. The paper finally draws some conclusions about the potential advantages of material substitution in the automotive industry. Due to the rather short real operation time of cars during their user phase - around six months - an investment in advanced composite materials in car production only results in a significant improvement of the overall eco-efficiency of cars if it allows a substantial weight reduction of the overall vehicle.

Description: The paper aims to shed light on the methodological challenges of GHG monitoring at local level and to give an overview on current practices. Questions addressed are as follows: How do the methodologies which underlie different GHG inventory tools differ? What are the critical variables explaining differences between inventories? Can different GHG inventory tools be compatible - and/or interoperable - and under which conditions? The first section discusses methodological challenges related to the formation of local GHG inventories. Rather than giving a comprehensive overview on methodological problems, this section mainly highlights some of the central methodological challenges posed by local GHG inventories. This overview identifies critical variables and clarifies concepts that are necessary for the understanding of the subsequent analysis. In section two, some of the most advanced GHG inventory tools are analysed and the most important differences between these tools are highlighted. The paper concludes that the methodologies are not consistent. Local GHG inventories can thus hardly be compared. The paper gives research and policy recommendations towards greater comparability and sketches the requirements of an international protocol on urban GHG inventories.