Lectures -

INTRODUCTION
Indonesia : the world largest habitat (1.1 million Ha)
Low utilization : 15-20% (Suryana, 2007)

Sago : multi function :

Dr. Lilik Budi Prasetyo, M.Sc.
Dr. Ir. Agus P. Kartono, M.Si.
Dr. Ir. Haris Syahbuddin, DEA.

Starch :
Staple Food,
Raw material of Industries
Bioenergi (1 kg ≈ 0.56 l ethanol)

Ir. Samin Botanri, MP.
Ir. Agus Jacob, MS.
Beni Okarda, S.Hut.MSc

Objectives

INTRODUCTION
Distribution Sago in Maluku:
Mulyono & Suwardi : 30.1 thousand Ha,

Develop spatial distribution
of sago palm in Seram
Islands

Ruhendi : 800 thousand Ha,
Louhenapessy : 26 thousand Ha

For the sake of utilization

Develop spatial distribution
model of sago palm in
Seram Island

: need accurate information

Urgently needed : Distribution map

Natural Habitat distribution

Location : Seram island

Data & Software:
 Secondary Data :
1. Map : Topographic Map (Bakosurtanal) ,
Landsystem (Bakosurtanal)
Soil map (LPT)
2. Digital data : Landsat TM & DEM ASTER

P. Seram (Landsat TM)

 Software : Erdas Imagine, Arciew & ArcGIS

Period : Pebruari – December 2009

1

Flow of Research

RSTM DEM

Maps

Seram Island map

River
distribution

Land cover

Topographic
map
Elevation)

Elevation

Land system

slope

Actual Sago palm
distribution

Environmental variables

Distenca from
coastline

Exp (a + bElev + cSlp + dRd_distJP + Coast_distEriv_distPS + fAl_soil)

P =
1 + (a + bElev + cSlp + dRd_distJP + Coast_distEriv_distPS + fAl_soil

Coastal line

Distance from
river

Logistic Regression Model

Landsat-5 TM & Land system

Slope

Alluvial &
Swamp

Grid Binairy spatial data &
Logistic regression

Where : P
a
b,c,d,e,f
Elev
Slp
Coast_dist
Rive_dist
Al

=
=
=
=
=
=
=
=

Probability sago palm occurence
intercept
constamt of regression
Elevation (m asl)
slope
Distance from coasline
Distance from River
Alluvial & swamp

Sago habitat distribution
prediction

Spatial knowledge : Defining Binary data
No

Parameter

Asumption

RESULT : Sago Palm Distribution

Criteria

1.

Elevation

Sago palm in Seram Island usually distributes Elevation >250 = 0
at low elevation (under 250 m asl)
Elevation < 250 = 1

2.

Slope

In general, natural habitat of Sago palm Slope > 5% = 0
Slope < 5% = 1
distribute on flat area to slight slope ( 5%)

3.

Distance from
coastline

Formation of sago palm situated after Coastline distance < 300 = 0
mangrove and nypa vegetation. It is about 300 Coastline distance > 300 = 1
meter from coast line.

4.

Distance fron

river

Sago palm distributes surround river/riverine River distance >1000 m = 0
areas. It is distiribute about 1000 m to River distance