Geography question from JKAS Prelims, 2018 by JKPSC
In Himalayas, permanent vegetation is not generally found above _____m altitude
Last updated May 15, 2026
Correct Answer:
Option C —
4600
In the context of the Himalayas and the standard classifications used for the UPSC Civil Services Examination, the permanent vegetation line (often referred to as the snow line or the upper limit of the alpine zone) typically concludes around 4500 to 4600 meters.
Vertical Stratification of Himalayan Vegetation
As altitude increases, the temperature and oxygen levels drop, leading to distinct "belts" of vegetation:
Tropical/Sub-tropical (Up to 1500m): Characterized by Sal, Teak, and bamboo forests.
Temperate (1500m – 3000m): Dominated by Broad-leaved evergreen species like Oak and Chestnut, followed by conifers like Deodar, Pine, and Silver Fir.
Sub-Alpine (3000m – 3500m): Transition zone where trees like Birch (Bhojpatra) and Rhododendrons are common.
Alpine (3500m – 4500m): Only shrubs, mosses, lichens, and alpine pastures (Margs/Bugyals) exist here.
Snow Line (Above 4500m – 4600m): Beyond this altitude, the terrain is characterized by permanent snow and permafrost, making it impossible for permanent vegetation to survive.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
