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| Rakhine Yoma | |
|---|---|
| Name | Rakhine Yoma |
| Other name | Arakan Mountains |
| Country | Myanmar |
| Region | Rakhine State |
| Highest | Mount Victoria (Nat Ma Taung) |
| Elevation m | 3053 |
| Length km | 400 |
Rakhine Yoma is a mountain range in western Myanmar forming a prominent north–south spine that separates the Bay of Bengal littoral from the central plains of Burma. The range includes peaks such as Nat Ma Taung and creates a climatic barrier influencing the Irrawaddy Delta and Chittagong Hill Tracts. Its position has affected routes between Calcutta (now Kolkata), Yangon, and Naypyidaw and has featured in regional interactions among Arakan Kingdom, Bengal Sultanate, and British India.
The range extends roughly 400 km along western Myanmar parallel to the Bay of Bengal and intersects with the Rangoon-adjacent lowlands near the Ayeyarwady River. Major peaks include Nat Ma Taung (Mount Victoria) and lesser summits near Thandwe and Sittwe, while passes connect to Chittagong and the Salween River basin. Rivers originating in the range feed into the Kaladan River, Mayu River, and tributaries of the Ayeyarwady River, shaping drainage patterns that affect Rakhine State, Magway Region, and adjacent districts historically administered under British Burma and contemporary Myanmar divisions.
The orogeny of the range relates to plate interactions between the Indian Plate and the Eurasian Plate, with Mesozoic to Cenozoic accretionary processes similar to those recorded in the Himalaya and Andaman Islands. Lithologies include Permian to Tertiary sequences with folded sedimentary strata, ophiolitic fragments, and intrusions comparable to exposures in Arakan Yoma research, bearing resemblance to structures studied in the Indo-Burman Ranges and documented in geological surveys by institutions like the Geological Society of London and regional universities such as University of Yangon and Chittagong University. Tectonic uplift, erosion, and monsoonal sedimentation have produced steep escarpments and alluvial fans influencing nearby basins like the Bengal Basin.
The range creates orographic rainfall gradients driven by the Southwest Monsoon and influences the Northeast Monsoon retreat, producing wet windward slopes and drier leeward interiors similar to patterns seen in the Western Ghats and Andes rain shadow analogues. Microclimates support montane cloud forests and transition zones analogous to those in Mount Kinabalu and Annamite Range habitats. Seasonal variability affects river discharge regimes feeding into the Bay of Bengal and interacts with cyclonic systems traced historically in records from India Office Records and contemporary meteorological agencies like the Myanmar Department of Meteorology and Hydrology.
Vegetation ranges from tropical evergreen and semi-evergreen forests at lower elevations to subtropical montane and temperate assemblages near summits, hosting species comparable to those found in Indo-Burma biodiversity hotspot and Sundaland adjacencies. Notable flora includes dipterocarps similar to Shorea species, laurels akin to Cinnamomum taxa, and rhododendron stands near higher ridges paralleling those in the Himalayan foothills. Faunal communities contain mammals such as populations related to Bengal tiger populations, Asian elephant corridors, and primates comparable to Hoolock gibbon and Rhesus macaque, as well as avifauna overlapping with migrants recorded at Rangoon and Cox's Bazar staging areas. Endemic and near-endemic taxa mirror patterns documented for the Arakan Mountains rain forests ecoregion in assessments by organizations including the IUCN, BirdLife International, and regional conservation groups.
Human presence spans prehistoric hunter-gatherer assemblages through state formation in the Arakan Kingdom and interactions with the Bengal Sultanate, Mughal Empire, and Konbaung Dynasty. Coastal and upland routes across the range facilitated trade and cultural exchange involving Portuguese traders, Dutch East India Company, and later British East India Company penetration during the First Anglo-Burmese War. Ethnolinguistic groups such as the Rakhine people, Chakma people, and hill communities have maintained distinct settlement patterns shaped by upland agriculture, swidden systems comparable to practices in the Chittagong Hill Tracts, and colonial-era land policies implemented under British India. During the World War II campaigns in Southeast Asia, the terrain influenced troop movements involving Japanese forces, British Indian Army, and allied units operating across Arakan Campaign theaters.
Economically, the region supports agriculture in valleys and coastal plains with crops like rice similar to cultivars in the Irrawaddy Delta, and cash crops analogous to those in Assam and Bangladesh coastal belts. Mineral resources include gemstones and economically exploited deposits comparable to those in the Gemstone Tract of Myanmar, while forest products historically supplied timber for export to markets accessed via ports such as Sittwe and Thandwe. Modern infrastructure projects, including road and river transport corridors proposed in bilateral discussions between Myanmar and India or Bangladesh, reflect the strategic importance of connectivity across the range for energy, trade, and resource development debated in forums like ASEAN and bilateral commissions.
Protected zones encompass areas designated to conserve montane and lowland forest ecosystems, with initiatives involving national bodies like the Forest Department (Myanmar) and international partners such as the World Wide Fund for Nature and United Nations Development Programme. Designations overlap with ecoregion assessments by the IUCN and Important Bird Areas identified by BirdLife International; efforts focus on habitat protection for species comparable to Asian elephant and endemic birds recorded near Nat Ma Taung National Park. Challenges include deforestation linked to logging activities, land-use change influenced by policies referenced in regional development plans, and community-based conservation models promoted by NGOs such as Fauna & Flora International and local universities. Conservation strategies reference frameworks like the Convention on Biological Diversity and regional biodiversity action plans coordinated through bodies including ASEAN Centre for Biodiversity.