Sustainability or sustainable development is presently an acknowledged and often invoked concept and approach to contemporary deepening environmental problems of our planet. Its local or regional applications are frequent call during recent years. This is caused by relatively unsuccessful attempts on its global application. Biosphere reserves are ideal places to study relations between the man and biosphere according to the principles of sustainability and sustainable development. The main objective of this dissertation is a proposal of a strategy for sustainability of the Giant Mts. Biosphere Reserve. We follow an environmental approach, which prefers the interests of environment and landscape and its protection and we understand it as a contribution to the debate on sustainable development of the Giant Mts. The strategy deals with selected issues of the area under study on the basis of analysis of relations among tourism and recreation, environmental landscape characteristics, and local population. The closest attention is paid to the impacts of tourism on the landscape and environment; nevertheless, we also deal with influences of the local population on the environment, and of the tourism on the local population. The strategy of sustainability is preceded by a characteristic of the environmental and socio-cultural identity of the Giant Mts., landscape ecological spatial differentiation of the area, landscape typology of the Giant Mts., and assessment of the natural carrying capacity of individual landscape spatial units. Besides, we deal with sustainability factors, which are tourism, nature and landscape protection, and local population. In this part of the dissertation we have made use of literature and statistical data review, field landscape ecological research, and general geographical methods, such as landscape ecological mapping, regional taxonomy, and analysis of selected phenomena and characteristics. The strategy proposed is concerned with the whole area of the Giant Mts. on one hand, when more general objectives and measures are defined. Their accomplishment should eliminate crucial environmental problems. On the other hand the strategy deals with individual segments of landscape, which were delimited on the landscape ecological basis. This part of the strategy attempts to respect local conditions of these spatial segments and its objectives and measures are more concrete.