BMP for Community Session 3

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BMP for Community Session 3

  1. 1. SESSION 3
  2. 2. PLANNING
  3. 3. A. BASIC INFORMATION
  4. 4. A1. WEATHER
  5. 5. A2. TYPE OF PEATLANDS
  6. 6. A2a. RIVER BASIN PEATLAND River basin peatland Peat river Mineral soil
  7. 7. A2a. River basin peatland
  8. 8. A2a. River basin peatland
  9. 9. A2b. Coastal peatlandriver peat sea Mineral soil
  10. 10. A2b. Coastal peatland Disadvantages1. Accessibility is not easy either by sea or river2. Saline water intrusion during highest tide
  11. 11. A2b. COASTAL PEATLAND
  12. 12. A3. PEAT TYPES
  13. 13. A3a. MATURITY OF PEAT Mature peat Semi-mature peat Semi-raw peat
  14. 14. Subsidence 50 cm Level subsidence Soil water tableCompaction compaction 50 cm level 50cm Peat under soil water table 50 cm Mineral soil A3b. Peat depth less than 2 m
  15. 15. A4. Soil type below peat layer
  16. 16. A4a. Potential Acid Sulphate soil pyrite
  17. 17. A4b. Riverine alluvial
  18. 18. A4c. Marine clay
  19. 19. A4d. Beach sand
  20. 20. A5. DEPTH OF SOIL WATER TABLE• Drainable and undrainable
  21. 21. B. Advance Information e
  22. 22. Cross section of peatland location River bank orPeat dome moderate elevation Low lying area Sea coast River or PEAT PEAT sea MINERAL SOIL
  23. 23. B1. Peat dome Peat dome Water catchment area seariver peat Mineral soil Mineral soil
  24. 24. B1. Peat dome
  25. 25. B1. Deep soil water table at peat dome
  26. 26. B2. Low lying areaHigher elevation Low lying area river bank River or or sea coast sea peat Mineral soil
  27. 27. B2. Low lying area
  28. 28. B2. Low lying area• Difficult to drain• Water logged during wet season
  29. 29. B3. Area subjected to river flood River basin peatlandArea free of flood Highest Flood Area subjected to flood level during wet season Low lying area Water level river during peat dry season Mineral soil
  30. 30. B3. Area subjected to flood Flood during wet season
  31. 31. B4. Area subjected to flood
  32. 32. B4. Area subjected to tidal influence Coastal peatland Area subjected to tidal influence sea coast sea Water level of land
  33. 33. B4. Area subjected to tidal influenceProblemSolution
  34. 34. B4. Area subjected to tidal influencePurpose1. To prevent undrainable area2. To prevent saline water intrusion
  35. 35. RESTTO BE CONTINUED

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