transferring control of parks to non-profits is a relatively common workaround to for a conservation-friendly government to ensure that parks outlast the current government.

if you keep protected areas within control of the government, there's always a concern that the next government decides to cancel those protections and sell that park off to industry or development. but if it's already "sold off" to a non-profit who wants to keep it a park, then it can't be sold to industry.