1. SESSION TWO

2. A. LIMITATION OF PEAT

3. 1. POOR NUTRIENT UPTAKE

4. 2. HIGH DOSAGE OF FERTILIZER

5. 3. FIXATION OF MICRO NUTRIENT

6. 1. POOR ROOT ACHORAGE

7. 2. POOR ACCESSIBILITY

8. 3. HIGH LEACHING
original ground level
fertilizer
fertilizer fertilizer
PEAT peat
water peat
water
PEAT
water water
water
PEAT peat
2012/7/6 9

9. 4. WATERLOGGED

10. LIMITATION OF PEAT AFTER
DRAINAGE

11. 1. IRREVERSIBLE DRYNESS
Irreversible dryness on top layer
soil water table
peat under water
2012/7/6 12

12. 2. FIRE PRONE

13. 3. SUBSIDENCE OF PEAT

14. 3.PROCESS OF PEAT SUBSIDENCE

15. 3a. Process of subsidence
original ground level
air air air
PEAT
peat
Water
peat
water water
PEAT
water
Water
PEAT peat
2012/7/6 16

16. 3b. Process of subsidence
Original ground level
ground level after subsidence
air
air
air
air
air
2012/7/6 air air
17

17. 3c. Process of subsidence
ORIGINAL GROUND LEVEL
GROUND LEVEL AFTER SUBSIDENCE
PEAT UNDER SOIL WATER TABLE
2012/7/6 18

18. Example of subsidence

19. Example of subsidence

20. Advantages of peat

21. Advantages of peatland

22. 1. ABUNDANT WATER SOURCE

23. 2. POSSIBLE WATER TRANSPORT SYSTEM

24. 3. Cheap transport cost

25. .

26. 1. LOW pH

27. 2. LOW NUTRIENTS

28. 3. HIGH CARBON NITROGEN RATIO

29. 4. HIGH CATION EXCHANGE CAPACITY

30. 5. LOW BULK DENSITY

31. 6. LOW BEARING

32. 7. HIGH POROSITY

33. 9. HIGH WATER TABLE