Which values do the national parks of our country promote?

Which values do the national parks of our country promote?

Our national parks promote the values given below
(i) They promote the rebuilding of our forest wealth, as the forest cover in India is just over 21.05%, whereas it should be about 33% for balancing the ecosystem.
(ii) They promote safety of animals, which is
required for many species which are endangered. If these species become extinct the ecosystem will be unbalanced, leading to more problems in future.
(iii) They promote the utilisation of herbs and plants as an occupation for the tribal and local communities living in or around the areas where the nadonal parks are located. The methods of making these traditional medicines should not be lost to the world, as such medicines are free from the side effects which are caused by anti-biotics.
(iv) Reviving the ecological system is an important value which will make the world a better place to live in for future generations.