Northern Laos
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| Northern Laos | |
|---|---|
| Nong Khiaw village on the Nam Ou river, Northern Laos | |
| Nong Khiaw village on the Nam Ou river, Northern Laos | |
| Location | Laos |
| Coordinates | Template:Coord |
| Gene Pool | Highland Lao Genepool |
| Country | Laos |
| Provinces/States | Phongsaly, Luang Namtha, Oudomxay, Bokeo, Luang Prabang, Houaphanh |
| Elevation Range | 300–2,000 m |
| Area | Approximately 95,000 km² |
| Climate | Tropical monsoon, subtropical highland |
| Primary Rivers | Mekong, Nam Ou, Nam Ngum, Nam Khan |
| Primary Mountains | Luang Prabang Range, Annamite Range, Phou Bia |
| Conservation Status | Vulnerable |
[[Has country::Laos]]
Geography
Northern Laos comprises the mountainous provinces north of Vientiane, characterized by rugged terrain, deep river valleys, and limited road infrastructure. The region forms part of the Indochinese Peninsula's northern highlands, where the Annamite Range and Luang Prabang Range create a complex topography of steep-sided valleys and isolated upland plateaus.[1]
The Mekong River forms much of the region's western boundary with Thailand and flows through dramatic gorges before widening at Luang Prabang, the region's cultural and economic center. Major tributaries including the Nam Ou, Nam Khan, and Nam Ngum create fertile valleys that have historically supported intensive agriculture, including cannabis cultivation.[2]
Elevation varies dramatically, from river valleys at 300 meters to peaks exceeding 2,000 meters, with Phou Bia (2,819 m) representing the highest point in Laos. This elevation gradient creates distinct microclimates and has resulted in significant variation in local cannabis populations.[Citation needed]
The region's isolation and limited accessibility have historically protected landrace populations from outside genetic influence, though road construction and increased connectivity since the 1990s have begun to change this dynamic.[Citation needed]
Climate
Northern Laos experiences a tropical monsoon climate with distinct wet and dry seasons, modified by elevation into subtropical and temperate highland zones. Wet Season (May–October): Southwest monsoon brings heavy rainfall, with some highland areas receiving over 2,500 mm annually. This coincides with the traditional cannabis growing season, with seeds planted at the onset of rains in May-June.[Citation needed] Dry Season (November–April): Cool, dry conditions prevail, particularly in highland areas where temperatures can drop below 10°C (50°F) at night during December-February. Cannabis harvest typically occurs in late October through November, with drying during the cool, dry months.[Citation needed] Cool Season (November–February): Distinct cool period particularly noticeable in highlands, with morning mist and occasional frost at highest elevations. This cool period influences local cultivation practices and plant morphology.[Citation needed] Temperature ranges vary significantly with elevation:
Lowlands (300-500m): 15-35°C annual range Mid-elevations (500-1200m): 10-30°C annual range Highlands (1200-2000m): 5-25°C annual range
Relative humidity remains high year-round, typically 70-90% during wet season and 50-70% during dry season, influencing traditional processing methods including trimming and seed drying.[Citation needed]
Cultural and Ethnic Context
Cultivation History
Genetics
No data at present, further research needed.
Growing Areas and Sub-Regions
Botanical Characteristics
Regional Traits
Geographic Variation
Other Variations
Cultivation Practices
Traditional Methods
Modern Methods
Conservation Status
Threats to Landrace Populations
Conservation Efforts
Chemical Profile
Cannabinoid Content
Gallery
<gallery mode="packed" heights="200px"> File:Northern-Laos-River-View.jpg|Nong Khiaw village on the Nam Ou river, Northern Laos
See Also
References
External Links
- [Link to relevant botanical databases]
- [Link to conservation organizations]
- [Link to genetic research papers]