216 · Alstonia scholaris — PLUS Expressway

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Alstonia scholaris

Blackboard tree · Family: Apocynaceae · ID 216 · alive · Condition: fair · LC · Least Concern

Dimensions

7.25 mHeight

0.32 mTrunk height

19 cmTrunk diameter (DBH)

6.13 mCanopy height

5.93 mCanopy width

18.65 mCanopy circumference

27.85 m²Crown projection area

104.74 m³Crown volume

3Stems

Structure & risk

39.72Slenderness (H/D)

0.88Safety factor (default wind)

9.53 °Leaning angle

15.36 °Trunk lean angle

7.24Competition index

2.19 mTree protection zone

0.28 mCritical root zone

3.29 mRoot protection zone

l0TMS category

Health & vitality

fairCondition

mediumVitality

youngAge class

moderately defoliatedCrown transparency

40.63 %Foliage transparency

0 %Dieback

64.08 %Crown density

92.77 %Crown light exposure ratio

84.61 %Live crown ratio

123.43 m²Leaf area

4.44Leaf area index (LAI)

1.18Leaf area / crown vol.

Ecosystem services

48.08 kgCarbon storage

18.61 kgCarbon sequestration / yr

49.16 kgOxygen production / yr

0.08 m³Avoided runoff

1.33 m³Water intercepted

1.57 m³Transpiration

1.32 m³Evaporation

8.15 m³Potential evapotranspiration

2.96 gCO removed / yr

11.67 gNO₂ removed / yr

25.16 gSO₂ removed / yr

7.34 gPM2.5 removed / yr

140.55 gO₃ removed / yr

Amenity valuation

1146.78CAVAT value

8411.4Koch value

852.35RADO value

Other

noBuilding clearance issue detected

1.75Crown base height

7.88Live height

notPresentOverhead utilities

noRoad clearance issue detected

Location

Lebuhraya Hubungan Kedua · 1.381344, 103.593411