Explanation: Blue pine and spruce appear at altitudes of 2,225-3,048 m. At many places in this zone, temperate grasslands are also found.

• But in the higher reaches there is a transition to Alpine forests and pastures.
• Silver firs, junipers, pines, birch and rhododendrons, etc. occur between 3,000-4,000 m.
• However, these pastures are used extensively for transhumance by tribes like the Gujjars, the Bakarwals, the Bhotiyas and the Gaddis.

Source: NCERT