As
@twebber55 said, those are ingrained into the Park's DNA. The best theme parks have a set of values from the very beginning and allow the park to keep future growth in line with past areas. If he was coming up with that now, there's no telling everything would fit into those goals.
A fun exercise to do is try to place your favorite Disney's Animal Kingdom attractions in those three goals. Take Everest for instance.
Intrinsic Value of Nature- After facing the Yeti you understand what a living breathing creature is capable of. The strength and majesty of those Animal instincts. Say what you will, but by the end of the ride most people feel the Yeti deserves to be left alone.
The Yeti is simply a metaphor for the wild and untamable aspects of nature. It's animal instincts and appearance evoke real animals. In the same way by the end of the attraction you feel that the Yeti is worth protecting, those sorts of feelings should apply elsewhere.
He's worth protecting not because you can watch him or because he does you a public service (in fact, he tries killing you) but because he's wild and untamable. He's Animal.
It is also accomplished by visuals too. Technically you're desecrating the Mountain by being there, but it's beautiful nonetheless.
By the end, you understand why the temple and the people of Serka Zong hold the Yeti in such high esteem.
Transformation through adventure- Pretty obvious here. You face the Yeti and almost die. It should change your outlook on things.
Call to Action- Because you've had those experiences above, you should feel moved to act differently. To approach Conservation differently and with more respect. Respect for the wild and untamable aspects of nature.
With the Yeti as a metaphorical tool, you should approach conservation knowing that though you may have doged him today, who knows what will happen in the future.
Humanity commonly looks at mountains as things that need to be conquered. In this case the conceit is turned on its head. The Mountain conquers man.
So do that just about anywhere in Disney's Animal Kingdom and you'll find it ingrained into the attractions.