This theses presents a discussion on the symbiotic relationship between the economic development and environmental protection. The presentation is based upon an extensive literature overview with a strong focus on Chinese research publications.

This  exploratory research  identifies  how  can  clothing companies  implement  textile recyclingtechnologies that help transition them to a sustainable circular economy business model, given the challenges of eco-innovation diffusion. The study is exploratory in nature, employs a literature review and a case study of Patagonia, the outdoor equipment and clothing company that pioneered the use of recycled fibers in the outdoor clothing industry and continues to have today several initiatives for diverting textile waste away from landfills.To implement textile recycling technologies, the company created the Worn Wear Program, the Common Threads Recycling Program and the possibility to return a worn-out garment to Patagonia’s distribution center by mail or from any store or local authorized dealer of Patagonia’s products. To make the recycling (or repurposing) of worn-out garments work, the company also established a repair department at its distribution center which receives all worn-out clothes sent for recycling or repurposing.

As is now generally accepted, climate change and environmental degradation has largely been triggered by carbon emissions and energy modeling for policy analysis has therefore attained renewed urgency. It is important for governments to satisfy emission targets and timetables set down by international agreements without disregarding macroeconomic concerns and restrictions. In this study, we present a large-scale nonlinear optimization model that allows the analysis of macroeconomic and multi-sectoral energy policies in respect of technological and environmental options and scenarios. The model consists of a detailed representation of energy activities and disaggregates the rest of the economy into five main sectors. Economy-wide solutions are obtained by computing a utility maximizing aggregate consumption bundle on the part of a representative household. Intersectoral and foreign transaction balances are maintained using a modified accounting matrix. The model also computes the impact on macroeconomic variables of greenhouse gas (GHG) emission strategies and abatement schemes. As such the model is capable of producing solutions that can be used to benchmark regulatory instruments and policies. Several scenarios are presented for the case of Turkey in which the impact of a nuclear power programme and power generation coupled with carbon-capture-and-storage schemes are investigated as well as setting quotas on total and sectoral GHG emissions.

La conciliation entre la protection de la nature et les intérêts de nature économique s'opère en recourant à la notion de développement durable. D'un point de vue juridique, les acteurs clés pour opérer une telle conciliation sont l'administration et le juge, qui appliquent et interprètent les normes applicables. Ils concilient l'intérêt général tenant à la protection de l'environnement avec les intérêts et les droits des acteurs du tourisme en utilisant leur pouvoir discrétionnaire, selon des modalités qui diffèrent en France et en Allemagne. Les parcs naturels nationaux et régionaux ont été retenus pour limiter le champ de recherche et constituent des exemples permettant d'illustrer les modalités de la conciliation entre exploitation économique et protection environnementale. Tandis que l'objectif assigné au parc national par la loi vise en premier lieu la protection de la nature, les parcs régionaux sont consacrés au développement durable, outil de conciliation entre les intérêts économiques et environnementaux. Le tourisme joue ainsi un rôle central dans l'organisation et le fonctionnement des parcs régionaux et présente la particularité d'être une activité économique qui suppose l'existence d'un environnement au moins en partie vierge et une nature préservée. / An optimal balance between economic and environmental issues is guided by the concept of sustainable development. From a legal perspective, the main parties making arbitrary decisions in this matter are the administrations and the administrative courts. They apply and interpret the respective rules by using their specific national power of discretion, arbitrary arbitrating between the public interest to protect the environment and the issues of the key players of the "green" tourism industry. The National parks and the Regional parks have been chosen to refine the study because these two constitute an example painting out the methods of arbitrary decision making between economic exploitation and the protection of the environment. With regard to the National park, the law assigns priority to the protection of the environment whereas the Regional park is dedicated to sustainable development as the method to accomplish the arbitration between economic and environmental issues. The tourism industry is playing a central role in the functional organisation of the Regional parks and is characterized by being an economic activity dependent on an environment at least in part untouched and still pristine.