Ecotourism is a form of tourism that aims to conserve the environment and support local communities. The International Ecotourism Society defines it as responsible travel to natural areas that conserves the environment, sustains local well-being, and involves education. The document discusses habitat improvement efforts at Kanha National Park in India, which has successfully managed grasslands and water sources to support increasing wildlife populations, including restoring endangered tiger and barasingha populations through conservation measures.