Uttarakhand has a total area of 53,483 km2,[27] of which 86% is mountainous and 65% is covered by forest.[27] Most of the northern part of the state is covered by high Himalayan peaks and glaciers. In the first half of the nineteenth century, the expanding development of Indian roads, railways and other physical infrastructure was giving rise to concerns over indiscriminate logging, particularly i
n the Himalaya. Two of the most important rivers in Hinduism originate in the region, the Ganges at Gangotri and the Yamuna at Yamunotri. These two along with Badrinath and Kedarnath form the Chota Char Dham, a holy pilgrimage for the Hindus. The state hosts the Bengal tiger in Jim Corbett National Park, the oldest national park of the Indian subcontinent. The Valley of Flowers, a UNESCO World Heritage Site located in the upper expanses of Bhyundar Ganga near Joshimath in Gharwal region, is known for the variety and rarity of its flowers and plants.[28] [29] One who raised this was Sir Joseph Dalton Hooker, Director of the Royal Botanic Gardens, Kew, who visited the region. As a consequence, Lord Dalhousie issued the Indian Forest Charter in 1855, reversing the previous laissez-faire policy. A direct consequence was the founding of the Imperial Forest School at Dehradun by Dietrich Brandis in 1878. Renamed the 'Imperial Forest Research Institute' in 1906, it is now known as the Forest Research Institute (India). The model “Forest Circles” around Dehradun, used for training, demonstration and scientific measurements, had a lasting positive influence on the forests and ecology of the region. The Himalayan ecosystem provides habitat for many animals (including bharal, snow leopards, leopards and tigers), plants, and rare herbs. Two of India's largest rivers, the Ganges and the Yamuna, originate in the glaciers of Uttarakhand, where they are fed by myriad lakes, glacial melts and streams.[30]
Uttarakhand lies on the southern slope of the Himalaya range, and the climate and vegetation vary greatly with elevation, from glaciers at the highest elevations to subtropical forests at the lower elevations. The highest elevations are covered by ice and bare rock. Below them, between 3,000 and 5,000 metres (9,800 and 16,400 ft) are the western Himalayan alpine shrub and meadows. The temperate western Himalayan subalpine conifer forests grow just below the tree line. At 3,000 to 2,600 metres (9,800 to 8,500 ft) elevation they transition to the temperate western Himalayan broadleaf forests, which lie in a belt from 2,600 to 1,500 metres (8,500 to 4,900 ft) elevation. Below 1,500 metres (4,900 ft) elevation lie the Himalayan subtropical pine forests. The Upper Gangetic Plains moist deciduous forests and the drier Terai-Duar savanna and grasslands cover the lowlands along the Uttar Pradesh border in a belt locally known as Bhabar. These lowland forests have mostly been cleared for agriculture, but a few pockets remain.[31]
