SPATIAL DISTRIBUTION OF CHLOROPHYLL-a IN CIRATA LAKE USING REMOTE SENSING

Syahras Fathin Aminuddin, Sunardi Sunardi, Prihadi Santoso

Abstract


The research of spatial distribution chlorophyll-a in Cirata lake using remote sensing. The method
used is secondary data collection, remote sensing, and statistical analysis. Remote sensing method
comprising, Pansharpening, radiometric correction, interpretation and image extraction, and data
presentation. Statistical analysis performed correlation and linear regression to get the mapping
formula chlorophyll-a. Purpose of this study is to apply remote sensing method as a tool monitoring
of the Cirata lake. The research objective is to obtain a model of remote sensing data with the data
of chlorophyll-a.The results showed linear regression equation in the first quarter, Y= 13.982*(x)50.673
with r = -0.33, R2
=
-0.007, and P-value
=
0.39.
Second
quater,
Y=
4.366*(x)+2.442,

r =
0.33, R2 = -0.031, and P-value = 0.40. Third quater, Y= 7.394*(x)+9.393, r = 0.11, R2 = 0.29, and
P-value = 0.79. Fourth quater, Y = 2.917*(x) + 8.324, r = 0.74, R2 = 0.70, and P-value = 0.022.
Spatial distribution of chlorophyll-a in Cirata lake concentrated on central of the lake area marked
darker colors or chlorophyll-a concentration ≥ 10 mg/m3 with a clumped pattern. Intake area has
clumped pattern dominated the light colors or chlorophyll-a concentration ≥ 10 mg/m3 and inlet
area has clumped pattern with a light color or chlorophyll-a concentration ≥ 8 mg/m3.


Keywords


Chlorophyll-a; Remote sensing; Spatial distribution; Cirata lake

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