Saturday, October 22, 2022
မွန်းကျပ်မှု ရှုမျှော်ခင်း
Thursday, June 23, 2022
Overview of the Arakan Mountains & Northern Triangle Forests Bioregion
The Arakan Mountains & Northern Triangle Forests bioregion is a critical ecological area in the Indomalayan realm, forming the upper western boundary of the Southeast Asian Forests subrealm. This bioregion spans approximately 24 million hectares and is composed of five distinct ecoregions:
Northern Triangle Temperate Forests (307)
Northern Triangle Subtropical Forests (259)
Northeast India-Myanmar Pine Forests (304)
Mizoram-Manipur-Kachin Rainforests (249)
Chin Hills-Arakan Yoma Montane Forests (226)
These forests are characterized by high biodiversity, unique species endemism, and critical conservation needs.
The Arakan Mountains & Northern Triangle Forests bioregion is part of the Southeast Asian Forests subrealm and is made up of five ecoregions: Northern Triangle Temperate Forests [1], Northern Triangle Subtropical Forests [2], Northeast India-Myanmar Pine Forests [3], Mizoram-Manipur-Kachin Rainforests [4], Chin Hills-Arakan Yoma Montane Forests [5].1. Northern Triangle Temperate Forests
Bioregion: Arakan Mountains & Northern Triangle Forests (IM10)
Realm: Indomalaya
Ecoregion Size: 1,075,000 hectares
Conservation Target: 95%
Protection Level: 5
Located in northern Myanmar, part of the infamous "Golden Triangle"
Home to endangered species like the red panda, takin, red goral, and dusky musk deer
Temperate forests (1,830–2,700 m) dominated by Alnus nepalensis, Betula cylindrostachya, Quercus, and Rhododendron
High bird diversity (365+ species), including Blyth’s tragopan and Sclater’s monal
Threats & Conservation Actions
Poaching for wildlife trade (e.g., musk deer, red panda)
Shifting agriculture inside protected areas
Recommended actions:
Strengthen protected area management
Engage local communities in conservation
Combat illegal wildlife trade
2. Chin Hills-Arakan Yoma Montane Forests
Bioregion: Arakan Mountains & Northern Triangle Forests (IM10)
Realm: Indomalaya
Ecoregion Size: 2,976,000 hectares
Conservation Target: 62%
Protection Level: 1
Key Features
High-altitude "sky islands" with Gondwanan relict species
Endemic flora like Rhododendron burmanicum and Viola unwinii
Critically endangered Arakan forest turtle (rediscovered in 1994)
Key species: Western hoolock gibbon, tiger, clouded leopard
Threats & Conservation Actions
Only 6% protected, but 80% forest remains
Threats: poaching, infrastructure projects, shifting agriculture
Recommended actions:
Expand protected areas
Regulate slash-and-burn farming
Stop poaching of endangered species
3. Mizoram-Manipur-Kachin Rainforests
Bioregion: Arakan Mountains & Northern Triangle Forests (IM10)
Realm: Indomalaya
Ecoregion Size: 13,586,000 hectares
Conservation Target: 70%
Protection Level: 1
Key Features
One of the richest bird diversity zones in Asia (580+ species)
Home to the rare leaf muntjac (discovered in 1997)
Key species: Asian elephant, tiger, red panda, great hornbill
Threats & Conservation Actions
Shifting cultivation is the biggest threat
Recommended actions:
Expand protected areas to 50% coverage
Promote sustainable agriculture
Engage local communities as conservation stewards
4. Northern Triangle Subtropical Forests
Bioregion: Arakan Mountains & Northern Triangle Forests (IM10)
Realm: Indomalaya
Ecoregion Size: 5,399,000 hectares
Conservation Target: 93%
Protection Level: 4
The flagship species of the Northern Triangle Subtropical Forests ecoregion is the Burmese snub-nosed monkey. Image credit: Creative Commons
Key Features
New species discoveries, including the Burmese snub-nosed monkey (2012)
Subtropical broadleaf forests with Magnolia, Lauraceae, and Dipterocarps
Key species: red panda, takin, hoolock gibbon
Threats & Conservation Actions
Logging, mining, and shifting agriculture
Recommended actions:
Develop landscape-scale conservation plans
Strengthen protected area management
Involve local communities in conservation
5. Northeast India-Myanmar Pine Forests
Bioregion: Arakan Mountains & Northern Triangle Forests (IM10)
Realm: Indomalaya
Ecoregion Size: 973,000 hectares
Conservation Target: 72%
Protection Level: 0
Key Features
One of only four tropical pine forest ecoregions in Asia
Dominated by Khasi pine and blue pine
Key species: sambar deer, Asiatic black bear, grey-sided laughingthrush
Threats & Conservation Actions
Forest fires and shifting cultivation
Recommended actions:
Establish new protected areas
Improve fire management
Engage local communities in sustainable practices
Conclusion: Conservation Priorities for the Bioregion
The Arakan Mountains & Northern Triangle Forests bioregion is a global biodiversity hotspot facing threats from deforestation, poaching, and unsustainable land use. Key conservation steps include:
Expanding protected areas
Strengthening anti-poaching efforts
Promoting community-based conservation
Developing sustainable land-use policies
By prioritizing these actions, we can safeguard this unique and irreplaceable ecosystem for future generations.
References
Chatterjee, S., Saikia, A., Dutta, P., Ghosh, D., Pangging, G., & Goswami, A.K. (2006). Biodiversity significance of Northeast India. WWF-India.
Critical Ecosystems Partnership Fund (CEPF). (2012). *Ecosystem profile: Indo-Burma biodiversity hotspot (2011 update)*.
https://www.cepf.net/Documents/final.indoburma_indochina.ep.pdfOne Earth. (n.d.). Arakan Mountains & Northern Triangle Forests bioregion (IM10).
https://www.oneearth.org/bioregions/arakan-mountains-northern-triangle-forests-im10/Rao, M., Rabinowitz, A., & Khaing, S.T. (2002). Status review of the protected-area system in Myanmar, with recommendations for conservation planning. Conservation Biology, 16(2), 360–368.
https://doi.org/10.1046/j.1523-1739.2002.00220.xSovacool, B. (2012). Environmental conservation problems and possible solutions in Myanmar. Contemporary Southeast Asia, 34(2), 217–248.
https://doi.org/10.1355/cs34-2bWard, F.K. (1921). In farthest Burma: The record of an arduous journey of exploration and research through the unknown frontier territory of Burma and Tibet. Seeley, Service & Co.
Wikramanayake, E., Dinerstein, E., Loucks, C., Olson, D., Morrison, J., Lamoreux, J., McKnight, M., & Hedao, P. (2002). Terrestrial ecoregions of the Indo-Pacific: A conservation assessment. Island Press.
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