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Floodplain disconnection
Three primary factors are responsible for disconnecting floodplains: physical barriers, river bed incision and alterations in flow.
Drowning flooded forest
Flooding plays a crucial role in shaping the flooded forest ecosystem, influencing the floodplain habitat's structure, quality, and function.
Degraded soil quality
Soil degradation in the Mekong Region results from multiple factors, including the cumulative impacts of hydropower dams that disrupt the flow of sediment carrying essential nutrients and intensive and unsustainable farming practices reliant on
Disruption in spawning zone and migratory route due to insufficiently large wetlands and insufficient connectivity
Commercial groundfish species, like whitefish, migrate upstream to areas along the Mekong River in Cambodia, southern Laos, and central Laos as part of their yearly breeding cycle.
Summary of Rising Problems
This section provides a summary of the issues identified in the four countries across the Mekong Region. The drivers, which serve as root causes, are interconnected with environmental changes.
Decrease of flooded forest cover in Cambodia
The Mekong Flooded Forest in Cambodia is under threat from the dual impact of climate change and dam development. Reports indicate up to a 40-50% loss of tall trees.
Disconnected wetland in Laos and Thailand
Wetland conversion for agriculture and urbanization often disconnects them from rivers and reduces wetland area. Moreover, the construction of hydropower dams has made river flow more constant, reducing sediment and nutrient supply.
Improving the flooded forest ecosystem
Flooded forest is a specific type of ecosystem characterized by the regular inundation of water due to the natural flooding of the Mekong River.
Stress & Pressure
Uncontrolled encroachment of the flooded forest has led to declines in fish populations and reduced income from fishery. The conversion of flooded forest to agricultural land has destroyed the vital breeding grounds and nursery habitats for fish.
Upscaling potential maps
The map below shows the suitability of restoration of the flooded forest in Cambodia. Areas in dark green are highly suitable for reforestation.