This is the 1969th most frequent Russian word.
сохранение
Preservation or conservation.
In this sentence, "сохранение" acts as a noun meaning "preservation," indicating the act of maintaining or protecting nature.
Сохранение природы — одна из важнейших задач человечества.
Preservation of nature is one of humanity's most important tasks.
Here, "сохранения" is a noun in the genitive case used to indicate the action of preserving, specifically in the context of data protection.
Для сохранения данных важно делать резервные копии.
To preserve data, it's important to make backups.
In this usage, "сохранением" is a noun in the instrumental case, referring to the process or activity of preserving cultural heritage.