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VEGETATION ANALYSIS

VEGETATION ANALYSIS. DEFINITION. VEGETATION ANALYSIS IS THE WAY TO STUDY SPECIES COMPOSITION AND STRUCTURE OF PLANT COMMUNITY. VEGETATION ANALYSIS. SPECIES COMPOSITION. VEGETATION STRUCTURE. AREA. SAMPLING. VEGETATION ANALYSIS TECHNIQUES. UNIT SAMPLING SIZE. UNIT SAMPLING FORM.

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VEGETATION ANALYSIS

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  1. VEGETATION ANALYSIS

  2. DEFINITION VEGETATION ANALYSIS IS THE WAY TO STUDY SPECIES COMPOSITION AND STRUCTURE OF PLANT COMMUNITY

  3. VEGETATION ANALYSIS SPECIES COMPOSITION VEGETATION STRUCTURE AREA SAMPLING VEGETATION ANALYSIS TECHNIQUES UNIT SAMPLING SIZE UNIT SAMPLING FORM UNIT SAMPLING SETTING

  4. SIZE AND FORM OF SAMPLING UNIT • VEGETATION SIZE • DENSITY • SPECIES DIVERSITY • LIFE FORM • SU SIZE • CONSIDERATION • SEMI OBJECTIVE • WAY • SPECIES CURVE AREA 1. MINIMUM SIZE OF SAMPLE UNIT ? 2. MINIMUM NUMBER OF SAMPLE UNIT ? • THE SHAPE OF SAMPLE PLOT CONSIDERATION • EASY TO LAYOUT • EFFICIENCY OF SAMPLING • SQUARE • STRIP (RECTANGULAR) • CIRCLE

  5. n 5 20 4 3 2 TOTAL NUMBER OF SPECIES (CUMULATIVE) 1 m 10 A 1 4 8 16 32 2 SAMPLE PLOT AREA (m2) • EXAMPLES : • SAMPLE PLOT (S.P) 1 (1M2) : 11 SPECIES • S.P. 2 (4M2) : 15 SPECIES • S.P. 3 (8M2) : 17 SPECIES • S.P. 4 (16M2) : 19 SPECIES • S.P. 5 (32M2) : 20 SPECIES

  6. HOW TO PUT SAMPLE PLOT 1. RANDOM SAMPLING 2. SYSTEMATIC SAMPLING • MORE PRACTICAL • MORE APPROXIMATION TO STAND CHARACHTERISTIC 3. PURPOSIVE SAMPLING

  7. GROWTH STAGE CRITERIA • SEEDLING : GERMINATION UNTIL H<1,5 M • SAPLING : H>1,5 M UNTIL D<10 CM • POLE : DIAMETER BETWEEN 10 CM UNTIL < 35 CM • TREE : DIAMETER  35 CM • GROUND COVER : WITH EXCEPTION OF TREE REGENERATION

  8. 4 3 2 1 SUB-PLOT SIZE OF VARIOUS GROWTH STAGE NESTED SAMPLING (1) SEEDLING AND GROUND COVER : 2 X 2 M2, 2 X 5 M2, 1 X 1 M2 (2) SAPLING : 5 X 5 M2 (3) POLE : 10 X 10 M2 (4) TREE : 20 X 20 M2

  9. MEASURED VEGETATION PARAMETER IN THE FIELD • SPECIES NAME • NUMBER OF INDIVIDU • CROWN DIAMETER • STEM DIAMETER : • DIAMETER AT BREAST-HEIGHT (DBH) • DIAMETER AT 20 CM ABOVE STAND ROOT • DIAMETER AT 20 CM ABOVE TOP OF AERIAL ROOT • TOTAL TREE HEIGHT AND TREE BOLE HEIGHT • STEM LOCATION

  10. VEGETATION ANALYSIS METHOD A. COMPARTMENT METHOD 1. QUADRAT METHOD 1.1. SINGLE COMPARTMENT 1.2. DOUBLE COMPARTMENT 2. TRANSECT METHOD 3. LINE COMPARTMENT METHOD 4. COMBINATION BETWEEN TRANSECT AND LINE COMPARTMENT METHOD

  11. VEGETATION ANALYSIS METHOD B. PLOTLESS METHOD 1. BITTERLICH METHOD 2. POINT QUARTER METHOD 3. RANDOM PAIR METHOD 4. LINE INTERCEPT METHOD 5. POINT INTERCEPT METHOD

  12. 40M 10M 20M 5M 2M 40M A. Quadrat Sampling Technique (Continued)A.1. Quarter Method A.1.1. SINGLE COMPARTMENT

  13. A.1. Quarter Method (Continued) A.1.2. DOUBLE COMPARTMENT RANDOM SISTEMATIC

  14. A.2. Transect Method 20 m 10 m 2 m 5 m

  15. A.3. Line Kompartment Method 20 m x m 2 m 5 m 10 m

  16. A.4. Combination between Transect and Line Compartment Method 20 m 2 m 5 m 10 m

  17. A. Quadrat Sampling Technique (Continued) TALLY SHEET FOR SEEDLINGS AND SAPLINGS

  18. A. Quadrat Sampling Technique (Continued) TALLY SHEET FOR POLES AND TREES

  19. A. Quadrat Sampling Technique (Continued) Summary of vegetation Analysis by the Quadrat Sampling Technique

  20. DATA ANALYSIS FOR QUADRAT SAMPLING TECHNIQUE

  21. DATA ANALYSIS FOR QUADRAT SAMPLING TECHNIQUE (Continued)

  22. 2 CM 66 CM B. Plotless Sampling Technique B.1. BITTERLICH METHOD Bitterlich Stick

  23. B.1. Bitterlich Method (Continued) Tally Sheet of Bitterlich Method

  24. N n BA = x 2,3 (m2/ha) B.1. Bitterlich Method (Continued) DATA ANALYSIS BA = BASAL AREA; 2.3 = BITTERLICH STICK FACTOR

  25. B.2. Point Quarter Method d3 d1 d2 d4

  26. B.2. Point Quarter Method (Continued) TALLY SHEET OF POINT QUARTER METHOD

  27. Individuals of a species Total individuals of all species Relative Density = X 100 Unit area (mean point-to-plant distance)2 Total density of all species = Relative density of a species 100 Density = X total density of all species Dominance for a species Total dominance for all species Relative Dominance = X 100 B.2. Point Quarter Method (Continued) Data Analysis Dominance = density of species X average dominance value for species

  28. Number of points at which species occurs Total number of points sampled Frequency = Frequncy value for a species Total of frequency values for all species Relative Frequency = X 100 B.2. Point Quarter Method (Continued) Data Analysis (Continued) Importance Value = relative density + relative dominance + relative frequncy

  29. B.3. Ramdom Pairs Method Individual nearest to point Measured distance 90 Random point Nearest neighbor in opposite 180o sector

  30. B.3. Ramdom Pairs Method (Continued)

  31. Unit area (0.80 X mean point-to-plant distance)2 Total density of all species = B.3. Ramdom Pairs Method (Continued) DATA ANALYSIS Absolute and relative values for density, dominance, and frequency and the importance value may be determined by the formulas previously given for the point-quarter method

  32. Pita Ukur B.4. Line Intercept Method 50 – 100 kaki ( 1 kaki = 30,48 cm) x m x m x m x m TALLY SHEET OF LINE INTERCEPT METHOD

  33. Total individuals of a species Total individuals of all species Relative density = X 100 Total of intercept lengths for a species Total transect lenght Dominance or cover (as % of ground surface) = X 100 Total of intercept lengths for a species Total of intercept lenghts for all species Relative dominance = X 100 B.4. Line Intercept Method (Continued) DATA ANALYSIS

  34. Intervals in which species occurs Total number of transect intervals Frequency = X 100 Frequency value for a species Total of frequrncy values for all species Relative frequency = X 100 B.4. Line Intercept Method (Continued) DATA ANALYSIS Importance Value = relative density + relative dominance + relative frequncy

  35. B.5. Point Intercept Method kawat 110 cm 10 cm 10 cm

  36. B.5. Point Intercept Method (Continued) TALLY SHEET OF POINT INTERCEPT METHOD

  37. B.2. Point Intercept Method (Continued) Data Analysis Number of point intercept for a species Total of point intercept for all species X 100 Dominance = Dominance values of a species Dominance values of all species X 100 Relative Dominance = Absolute and relative values for density, and frequency and the importance value may be determined by the formulas previously given for the quadrat sampling technique

  38. thank you

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