THE TONLE SAP INITIATIVE he Tonle Sap is the most important inland wetland in Southeast Asia. It supports a huge population through its enormous fisheries productivity and water supply, and provides the last refuge for some of Asia’s most globally significant biodiversity. Human population and development pressures, however, are increasing. In response, the Government of Cambodia established the Tonle Sap Biosphere Reserve (TSBR) in February 2001 as a focal point of environmental management. Not surprisingly, establishment of the TSBR has shed light on the numerous threats to the Tonle Sap: each has multiple root causes, the severity of which affect the speed and manner in which they can be addressed. The Asian Development Bank (ADB) recognizes that sustainable management and conservation of natural resources and biodiversity should be considered from the perspective of the basin feeding the Tonle Sap. In keeping with this outlook, the Tonle Sap Environmental Management Project (2002) aims to enhance systems and develop the capacity for natural resource management coordination and planning, community-based natural
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resource management, and biodiversity conservation in the TSBR. Without such investments, the Tonle Sap region would become progressively less productive. The Project also initiates a framework wherein subsequent projects could address generic management and conservation concerns, institutionalize communitybased natural resource management, promote sustainable livelihoods, pioneer stewardship of core areas by
communities, upgrade basin-wide research and database development, and encourage extension services in place of regulation. Infrastructure for waste management, water supply and sanitation, multipurpose landing sites, ecotourism, and expanded rural credit and microfinance might also be appropriate. ADB’s country strategies and programs for Cambodia reflect ADB’s sector-wide approach to the Tonle Sap, which ADB expects to pursue over the next 10 years.
The Tonle Sap Area
· 250,000–300,000 ha in the dry season · 1.0–1.6 million ha in the wet season
Hydrology
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Biology
· The flooded forest contains about 200 plant species · The flooded forest covered more than 1 million ha originally, 614,000 ha in the 1960s, and 362,000 ha in 1991 · The Tonle Sap contains at least 200 species of fish, 42 species of reptiles, 225 species of birds, and 46 species of mammals
Socioeconomy
· 1.2 million people live in the area bordered by Highways No. 5 and No. 6. · The Tonle Sap yields about 230,000 tons of fish per annum (more than 50% of Cambodia’s total) · Rice production in the Tonle Sap floodplain makes up about 12% of Cambodia’s total production.
1–2 m above mean sea level in the dry season 8–11 m above mean sea level in the wet season 20% of the Mekong River’s floodwaters are absorbed by the Tonle Sap 62% of the Tonle Sap’s water originates from the Mekong River 38% of the Tonle Sap’s water originates from the Tonle Sap watershed The Tonle Sap is connected to the Mekong River by the 100-kilometer long Tonle Sap River, which reverses its flow seasonally
ADB MEKONG DEPARTMENT
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Eric Sales
FUTURE SOLUTIONS NOW