Transcript PowerPoint Presentation - Coastal Zone Management in Sri Lanka

Coastal Zone Management in Sri Lanka, The need for integrated
approaches to data generation, information sharing and definition of
critical areas
Ajith Gunaratne
Coastal Zone definition - Sri Lanka
Total land area - 65000 Km2
Length of coast line -1620 Km
Basin estuaries & lagoons - 45
Riverine estuaries - 75
74 Divisional Secretaries’ Divisions
Coastal Regions (DSD) encompasses
23 % of the total extent
25 % of the country's population
62 % of industrial units
41 % of urbanized place
70 % of tourist hotel
68 % of Coastal fishery production
Coastal uses includes
Urban expansion
Commercial and fisheries harbor development
Transport and communication
Recreational and tourism development
Sand and Coral mining
Aquaculture (esp. Shrimp farming)
Settlement from internal migratory people
Fishing
Requirement 1 : Proper definition to Coastal Zone
Study Area : Negombo Lagoon - Muthurajawela
MasrhCoastal Wetland
Catchments - 727 Km2
Lagoon and wetland system - 6232 ha
Negombo Lagoon - Muthurajawela Masrh
Coastal Wetland
- Tidally influenced coastal wetland
- Marine fishing center of national importance
Fauna
- 40% of Sri Lankan mammal species
- 39 % of Sri Lankan bird species
- 40 % of migrants birds
- 23% of reptile species
- 39 % Sri Lankan amphibians
Vegetation
- grasses
- reeds
- sedges
- aquatic vegetation
- shrubs & trees
- submerged seagrasses
- mangroves
Major Problems
Lagoon
Sedimentation
Maintenance of adequate
tidal exchange
Habitat degradation
Untreated industrial pollutants
Oil pollution
Marsh
Encroachments
Habitat degradation
Pollution
Catchments
Industrialisation
Urbanisation
Salt water Intrusion
Infrastructure Development
Coastal Zone Definition
Identification of Data Requirements
Statistical
Remote Sensing
Data
GIS
Demarcations
Planning
Bio -Physical
Criteria
Inventory
Management and Planning
- Query
- extraction
- change
- Planning
- decision
(R. Caloz et al. 1997)
Present
Past
Observed Information
Future
Derived Information
- description (past, present)
- explanation : modeling
- Forecast (Future) : Simulation, decision
making