In recent decades, environmental justice has become a defining concept in socio-spatial inequality research, political debates, and activism. Environmental justice research, which is essentially based on theories of social and spatial justice and providesa normative framework for thinking, focuses on the unequal distribution of environmental harms and risks and their social consequences. Environmental justice research aims to explore the economic, social, health, and legal differences that individuals and groups face in their environment as a result of environmental processes, decision making, power relations, and law enforcement practices. This is largely related to the subjective perception of individuals and the perception of injustices by different actors. In the vast majority of environmental justice studies, spatiality provides a framework for interpreting and understanding environmentally unjust situations and processes. Environmental justice is therefore not only a natural, but also a socially dependent phenomenon, in which the key element is nevertheless the non-human factor (e.g. environmental events such as floods), which affects individuals and groups indifferent ways. As a result, an environmentally unjust state and situation may occur. The evolved injustices also interact with inherited spatial inequalities, existing socioeconomic systems, and the institutional structures that originally shape them.
This paper summarizes the theoretical framework of environmental justice in geography and spatial sciences. The study adapts the theory of justice to post-socialist and Hungarian specificities and forms of environmental injustice, and examines decision-making processes and the perception of risks. In Hungary social problems and differences have been increasing in recent decades, and marginalisation and polarisation processes have added new spatial patterns to existing inequalities, directly and indirectly affecting environmental processes as well. Attempts at eliminating environmental injustices have resulted in new injustices, or deepened existing ones, due to the lack of a complex socio-environmental spatial approach of interventions. The solution to these injustices presupposes the effective and meaningful involvement of the affected people in policy-making and implementation processes, regardless of gender, age, origin, identity, or income. Otherwise, the unjust situation will persist and crisis areas affected by environmental injustices may develop.