We demonstrated the importance of methodological approaches in the studies of environmental phenomena. We also analyzed the features of the interdisciplinary, integrated, systemic, structural, probabilistic approaches. A comparative analysis of them was done. The limitations of the implementation of each method separately were observed to prove them to be used together for better results, especially its efficiency in ecological studies. The environmental orientation of the examined approaches was of a particular interest, which added a certain novelty to the article. We made conclusions and gave recommendations as a final note.