Gorkha is rich in biodiversity as well due to its diverse ecosystem spreading from 228 m to 8163 m altitude from the sea level. The flora and fauna diversity found from the Tropical Sal Forest to Alpine meadows are the attraction of Gorkha District. Pine forest, Rhododendron forest and Coniferous forests keep the area evergreen and colorful throughout the year.

The Alpine and Nival Zones are important for colorful meadows and shrubs, herbs and trees of medicinal utilities.
The Manaslu area provides shelter to 19 per cent of total mammals and 13 per cent of total birds found in Nepal. There are 11 types of forest. The preliminary survey study has recorded 33 species of mammals, 110 species of birds, 3 species of reptiles, 211 species of butterflies, 2200 species of flowering plants found in Manaslu Area. Must Deer, Snow Leopard, Red Panda, Blue Sheep, Himalayan Black Bear, Hoary-bellied Himalayan Squirrel, Common Leopards, Wild Dongs, Monkeys, Langur Monkey, Himalayan Thar, Pick-horse Mouse, Barking Deer, Porcupine, Yellow-throated Martin, etc. are the floral species of this area.
Ludikhola watershed covers the forest area ranging from 600m to 1100m altitude having upper tropical to sub-tropical lower forests. It bears Shorea robusta, Schima wallichi, and pines as dominant species. This watershed is characterized by social diversity with numerous ethnic groups (i.e. Magar, Gurung, Tamang, Dalit and few Brahmin, Chhetri).