Provincial parks protect a representative sample of life science features in Ontario's 13 site regions and 65 site districts. Site regions are broad climatic zones distinguished by their north-south temperature and east-west precipitation gradient. Site districts are the distinctive physiographic areas found within the site regions. Each site district contains landform patterns and biological productivity traits that distinguish it from other site districts. Finer landscape units are defined in each site district based on recurring landform patterns. Close to one half of these landform patterns and the vegetation and species they support are found within Ontario's provincial parks.

Biological research in provincial parks is encouraged. Researchers must submit an Application to Conduct Research and receive approval.