Ecological Site Description Ecological Site Characteristics Site Identification



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FOTG Section II. Natural Resources Information F. Ecological Site Descriptions

F162XY501HI Lama-Alahee-Pandanus Coastal Forest




Ecological Site Description

Ecological Site Characteristics


Site Identification

Site Type: Forestland

Site ID: F162XY501HI

MLRA: 162

Colloquial Site Name: Lama-Alahee-Pandanus Coastal Forest

Official Site Name: Pandanus tectorius-Diospyros sandwicensis/Psydrax odorata-Osteomeles anthyllidifolia/Peperomia


Physiographic Features

This ecological site occurs on lava flows on sloping mountainsides of shield volcanoes. Lava flows are `a`a (loose, cobbly) or pahoehoe (smooth, relatively unbroken). Volcanic ash flows range from very shallow to shallow on the underlying lava.




Landform: (1) `a`a lava flow
Landform: (2) pahoehoe lava flow
Landform: (3) volcanic ash flow

Minimum

Maximum

Elevation (feet):

20

350

Slope (percent):

2

55

Water Table Depth (inches):

none

3

Flooding:
Frequency:
Duration:


very rare
--



occasional

extremely brief

Ponding:
Depth (inches):
Frequency:
Duration:


--
none





2
none
--


Runoff Class:

negligible

very high

Aspect: (1) E
Aspect: (2) SE








Climatic Features

Average annual precipitation ranges from 70 to 110 inches. Most of the precipitation falls from November through March, with March being the wettest month. Average annual temperature is about 72 to 73 degrees F. The climate can be generally classified as udic and tropical in nature.


Climate Chart




Minimum

Maximum

Frost Free Period (days):

365

365

Freeze Free Period (days):

365

365

Mean Annual Precipitation (inches):

70

110




Monthly Precipitation (inches) and Temperature (0F)

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Precip. Min.

1

1

1

2

1

2

2

2

1

2

2

2

Precip Max.

28

32

64

38

16

18

12

25

16

20

31

36

Temp. Min

64

63

64

64

66

67

68

69

68

67

66

65

Temp. Max

76

76

76

77

80

80

81

81

81

80

78

77

Climate Station: (1)
Climate Station: (2)

Kapoho 93.0, 1891-1960 (precipitation)

Kapoho 93.0, 1905-1923 (temperature)

Influencing Water Features

There are no water features influencing this site.



Representative Soil Features

Soils are very shallow to shallow highly decomposed plant materials in `a`a or over pahoehoe. Landscape surfaces in this ecological site are young (generally 400 to 1,500 years old). The soils are well to excessively drained. Available water capacity in most soils ranges from 1 to 4 inches. Available water capacity refers to the volume of water available to plants in the upper 40 inches of soil, including rocks, at field capacity. Permeability is rapid in soils but can be very slow in underlying pahoehoe. Runoff potential ranges is negligible. Moist colors range from very dark brown to black. Soil temperature regimes are isohyperthermic. Soil moisture regimes are udic (in most years, not dry for as long as 90 cumulative days).




Predominant Parent Materials:
Kind: highly decomposed plant materials

Origin:      



Surface Texture: (1) 
Surface Texture: (2) 
Subsurface Texture Group: 

Surface Fragments <=3" (%Cover): 0-60
Surface Fragments >3" (%Cover): 0-50

Rock Fragments <=3" (%Volume): 0-65
Rock Fragments >3" (%Volume): 0-95

Drainage Class: well to excessively

Permeability Class: rapid




Minimum

Maximum

Depth (inches):

2

12

Electrical Conductivity (mmhos/cm):

0

2

Sodium Adsorption Ratio:

0

0

Calcium Carbonate Equivalent (percent):







Soil Reaction (1:1 Water):







Soil Reaction (.0-1M CaC12):







Available Water Capacity (inches):









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