From Horton Plains in Sri Lanka to the edge of the world - Mahaeli thenna

 


Content

Maha Eli Thanna, known as Horton Plains, is the largest protected forest ecosystem located in Sri Lanka’s Central Province, spreading across the districts of Nuwara Eliya and Uva. It has been designated a national park and features breathtaking landscapes with rich biodiversity. The plateau extends through mountainous terrain, covering approximately 18,000 hectares with four distinct ecological zones. The altitudinal range is between 1,200 and 2,300 meters above sea level.

Ecosystems Found Within Horton Plains

  • Montane cloud forests
  • Grasslands
  • Bogs
  • Shallow wetlands

Historical Significance

Many environmental and biological elements unique to Horton Plains date back to the end of the Ice Age (Pleistocene epoch). According to a 2006 thesis, "The emergence of early agriculture in the Horton Plains," by Dr. Rathnasiri Premathilake of the University of Kelaniya:

  • The Balangoda Man used advanced stone tools about 30,000 years ago with discoveries found in Horton Plains.
  • Sediment samples reveal fossilized pollen dated to 7,000 years ago.
  • Slash-and-burn farming was practiced approximately 7,000 years ago, including cultivation of wild rice.
  • Barley and oats cultivation date back around 15,000-14,000 years ago.
  • Mesolithic humans transitioned to agriculture while living in Horton Plains.
  • Substantial rainfall about 9,000 years ago created large reservoirs.

Geographic Location

Horton Plains is a highland plateau sitting at an altitude between 2,100 and 2,300 meters, located between Pattipola in Nuwara Eliya and Ohiya in Uva Province. It is the headwater area for Sri Lanka’s three major rivers: Mahaweli, Kelani, and Walave.

Biodiversity

  • Annual rainfall: ~5,000 millimeters
  • Average temperature: 15°C (drops to 2-3°C during December and January with frequent frost)

Maha Rathmal



Flora

  • Binar Flower
  • Maharatmal
  • Nelu (Strobilanthes species)
  • Wild cinnamon (Cinnamomum ovalifolium)
  • Dwarf bamboo (Sinarundinaria densifolia)
  • Calophyllum walkeri
  • Elephant ear tree (Actinodaphne speciosa)
  • Cyclosorus interruptus fern
  • Kikurya grass (Pennisetum clandestinum)
  • Various wild plants including Innamounonalifolium and Syzygium ravolutum



Fauna

Elephants were once abundant though now absent. Other species include Sri Lankan leopard, Indian pangolin, muntjac, wild boar, and various birds.



Environmental Significance

Horton Plains plays a critical role in green cover and water supply for Sri Lanka. It hosts evolutionary, botanical, zoological, and environmental research.

Conservation Efforts

Joint government and private sector programs drive conservation and sustainable development with eco-tourism as a focus.



Tourism Importance

Horton Plains is a favored destination for nature lovers, hikers, bird watchers, and eco-tourists, featuring scenic spots like World’s End and Baker’s Falls with numerous walking trails.


Sources,

1. Horton Plains National Park, From Wikipedia 
2. Horton Plains National Park
3. Gona Plains, Scientific Exploration (Terence Kahapola Arachchi) 
4. BIODIVERSITY BASELINE SURVEY:HORTON PLAINS NATIONAL PARK Contributors: S.M.D. Ajantha U. De Alwis (Fish), P. Nihal Dayawansa (Herpetofauna), Ric How (Data Analysis), B.M.P. Singhakumara (Plants), Devaka Weerakoon (Birds), Mayuri R. Wijesinghe (Mammals), Editor: Michael J.B. Green, March 2007 
5. SYNCHRONIZED FLOWERING AND MASTING BEHAVIOR OF STROBILANTHES (NELU), Yasoja Athugala 
6. The emergence of early agriculture in the Horton Plains, The emergence of early agriculture in the Horton Plains, central Sri Lanka: linked to late Pleistocene and early central Sri Lanka: linked to late Pleistocene and early Holocene climatic changes Holocene climatic changes. R. Premathilake 
7. From wild grass to golden grain: How rice cultivation in Sri Lanka may have been linked to Stone Age man. By Asif Hussein, The Sunday Times. 
8. Human used upper montane ecosystem in the Horton Plains, central Sri Lanka - a link to Lateglacial and early Holocene climate and environmental changes, September 2012. Rathnasiri Premathilake, University of Kelaniya

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