Eastern Himalayan alpine shrub and meadows

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The Eastern Himalayan alpine shrub and meadows is an alpine ecoregion of Bhutan, China, India, Myanmar, and Nepal, which lies between the tree line and snow line in the eastern portion of the Himalaya Range.

Contents

[edit] Setting

The Eastern Himalayan alpine shrub and meadows covers an area of 70,200 square kilometers (27,100 square miles), extending along the north and south faces of the Himalaya Range from the Kali Gandaki Gorge in central Nepal eastwards through Tibet and India's Sikkim state, Bhutan, India's Arunachal Pradesh state, and northernmost Myanmar.

The alpine shrub and meadows lie between approximately 4000 and 5500 meters elevation. Permanent ice and snow lies above 5500 meters. The Eastern Himalayan sub-alpine conifer forests lie below 3000 meters along the southern slopes of the range, from Central Nepal to Bhutan. The Northeastern Himalayan subalpine conifer forests lie south of the range in Arunachal Pradesh, extending north of the range into the lower valley of the Brahmaputra River and its tributaries. The Northern Triangle temperate forests lie to the south of the alpine shrub and meadows in northern Myanmar, and the Nujiang Langcang Gorge alpine conifer and mixed forests lie to the east in the gorges of the upper Irrawaddy and Salween rivers.

The Yarlung Tsangpo arid steppe lies in the upper Brahmaputra Valley of Tibet, north of the Eastern Himalayan alpine shrub and meadows.

[edit] Flora

Alpine shrublands, characterized by rhododendrons, predominate at lower elevations, close to the treeline. The rhododendron flora of the ecoregion is quite varied, with species composition changing as one moves from west to east along the range.

Above the shrublands are alpine meadows which support a variety of herbaceous plants, including species of Alchemilla, Androsace, Anemone, Diapensia, Draba, Gentiana, Impatiens, Leontopodium, Meconopsis, Pedicularis, Potentilla, Primula, Rhododendron, Saussurea, Saxifraga, Sedum, and Viola. In the spring and summer, the alpine meadows are covered with brightly-colored flowers.

On the upper slopes, low grasses and cushion plants grow among the boulders and scree.

[edit] Fauna

Large mammals include the Snow Leopard (Uncia uncia), Bharal or Himalayan Blue Sheep (Pseudois nayaur), Himalayan Tahr (Hemitragus jemlahicus), takin (Budorcas taxicolor), Himalayan Musk Deer (Moschus chrysogaster), Himalayan Goral (Nemorhaedus baileyi), and Mainland Serow (Capricornis sumatraensis). Smaller mammals include Himalayan Marmots (Marmota himalayana), weasels, and pikas.

[edit] Conservation

Several protected areas lie within or partly within the ecoregion, including:

  • Annapurna Conservation Area, Nepal
  • Bomdeling Wildlife Sanctuary, Bhutan
  • Dihang-Dibang Biosphere Reserve, India
  • Dongjiu Nature Reserve, China
  • Jigme Singye Wangchuck National Park, Bhutan
  • Jigme Dorji National Park, Bhutan
  • Langtang National Park, Nepal
  • Makalu-Barun National Park and Conservation Area, Nepal
  • Motuo Nature Reserve, China
  • Sakteng Wildlife Sanctuary, Bhutan
  • Sagarmatha National Park, Nepal
  • Thrumshingla National Park, Bhutan
  • Torsa Strict Nature Reserve, Bhutan
  • Walong National Park, India

[edit] References and external links


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