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Altitudinal Biome.

On the basis of broad climatic regimes only four types of terrestrial biomes are present - tropical rain forests, taiga, tundra and temperate deciduous. All these latitudinal biomes can be observed on high mountain ranges. The four latitudinal biomes are telescoped into altitudinal biomes each extending a few 100 metres in height from base to below the snow line.
Basal part posses tropical forest and is called terai in India. High mountains growing in warm temperature areas do not have tropical forests at the base. Low altitude mountains devoid of snow caps do not have tundra vegetation. So the number of biomes found on mountains depend upon its latitude and height.

Equivalent Altitudinal and Latitudinal Zonation in the Northern Hemisphere

Alpine tundra is the highest altitudinal biome which occurs near the top of high mountains having permanent snow e.g. Himalayas. It is treeless region and lie above timberline.

Trees of lower region become tiny shrubs - Juniperus, Rhododendron plants usually have spreading or cushion habit and often grows in protected areas. Alpine tundra differ from arctic tundra in being slopy, well drain with the little peat or bog, more herbaceous and dwarfed trees.

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