PERANAN PENGGUNAAN LAHANDI AREA TANGKAPAN SUNGAI SUNGEAN TERHADAP EUTROFIKASI DANAU TONDANO

Santi . Lumingkewas, Johan A. Rombang, Josephus I. Kalangi, Fabiola B. Saroinsong

Abstract


ABSTRACT
Eutrofication is one of the water pollution that caused by the increase of
the consentrate of nutrient. This research studied conducted in catchment area of
Sungean river sub DAS Noongan, Kab. Minahasa. The objective of this study
were to quantify the eutrofication’s rapid, in this case the value of Nitrogen and
Fosfor that caused by any land uses in catchment area of Sungean river sub DAS
Noongan.
This research studied was done by taking the sample of water and
quantifying water discharge in some point which had been chosen along
catchment area of Sungean river that represent various land use. Then the
concentrate of N and P in water sample was analyzed in BARISTAND laboratory.
Then the data of N and P That transported from each land uses, was analyzed in
statistic with using Randomized Block Design (RBD) and spatial analisis
(arcview).
The result of research study showed that, each land uses gave effect to
the increase of lake eutrofication. Were in Tondano Lake from Sungean river for
N was about 467,1076 mg/day and P was about 5,961849 mg/day. The biggest
contribution of N and P was from residential area, it was 464,2352 mg day-1 ha-1
dan 5,961849 mg day-1 ha-1.
Keywords : Eutrofikasi, Nutrient, River Of Sungean, Landuse

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