This thesis discusses the potential of re-establishing the link between conservation and planning based on the existing conservation criticisms and critical debates in urban and planning theory. It also explores the possibilities of developing a new understanding of environmental protection in planning for Turkey through the Mount Ida case. While market-based conservation approaches, such as ecosystem services valuation, expand the scope of traditional conservation, they are criticized for leading to 'green grabbing' practices in newly designated areas and promoting unlimited exploitation of nature outside these areas. Concurrently, the spatialization of degrowth strategies aimed at overcoming socio-environmental crises and new inequalities, and the necessity of shifting planning away from economic growth focus towards a post-growth planning practice, are discussed. In Turkey, the prioritization of economic growth and the centralization of decision-making processes have led to the concurrent carrying out of destructive activities and 'greener' activities, even within protected regions. While Mount Ida National Park and its southern slope are partially protected, new mining activities in the peripheral forests and geothermal energy-based activities along the coastline continue with the allocation of forests and water resources in a way that leads to environmental pollution and inequalities due to export-oriented policies. Even if a new project of ecosystem services for the forests of Mount Ida is introduced, new inequalities may emerge at different scales due to isolated conservation decisions, economic growth-oriented targets and policies besides legal inadequacies. In this line, the thesis proposes 'conservation scales' for the area with 'biodiversity impact chain' analysis as a tool to expose inequalities, propose and politicize post-growth alternatives.