The population is declining because of habitat loss and contamination.
Times, Sunday Times (2010)
Rural schools have been harder hit by the population decline than many urban areas.
Times, Sunday Times (2008)
For example, population decline primarily concerns specific social groups and contributes to the pauperization of cities.
Nicolas Cauchi-Duval, Vincent Béal, Max Rousseau 2016, 'La décroissance urbaine en France : des villes sans politique', Espace populations sociétés