It's a non-fiction book in Finnish published by Eetos, where I'm a board member:
Henkipuita ja tilanhoitoa: Uskonnot ympäristökriisien aikakaudellaThis translates as "Spirit Trees and Stewardship: Religions in the Age of Environmental Crises", which I think is moderately self-explanatory. It's a good collection of articles studying different angles on the topic.