Hi,
Isn't it: the government body write the law that establish the park/area? (at least for France, it seems about right).
@Jane: by jurisdiction do you mean https://www.wikidata.org/wiki/Property:P1001? Do you have an example, I don't really see how it make sense (again France is maybe particular as it almost always will be 'P1001:Q142').
Cdlt, ~nicolas