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Pemetaan Perubahan Ekosistem Wilayah Pesisir Kecamatan Dullah Utara Kota Tual [PAPER]

ABSTRACT The high-use activities, the lack of  information and data on the ecosystem as a basic reference for management of  coastal are...


ABSTRACT
The high-use activities, the lack of  information and data on the ecosystem as a basic reference for management of  coastal areas of  the Subdistrict North Dullah. This study aims to determine the potential and distribution of  major ecosystems and analyze the rate of  change in a certain period of  time based on image interpretation. Based on the results of  image analysis will be known the extent and distribution of  major ecosystems, are then compared with some of  the imagery in the past period of  time to analyze the rate of  change. This research was conducted in the coastal region of  North Dullah Subdistrict Tual City. The imagery analysis used the transformation of  depth invariant index and supervised classification. Landsat 8 year 2014 image interpretation shows coral reef  extents are 1934.82 hectares  while for sea grass extents are 614.43 hectares. In 2004 to 2009 there was a increase in coral reef  ecosystems extents to 133.56 hectares (4.78%), while for the seagrass ecosystem extents increase to 84.69 ha (14.58%). In 2009 to 2014 coral reefs extent decrease to 992.16 hectares (33.89%) while for seagrass extents decrease to 51.21 hectares (7.69%).

Keyword: ecosystem, mapping, remote sensing, satelite imagery


ABSTRAK
Tingginya aktivitas pemanfaatan serta kurangnya informasi dan data tentang ekosistem sebagai acuan dasar pengelolaan di wilayah pesisir Kecamatan Dullah Utara. Penelitian ini bertujuan mengetahui potensi dan sebaran ekosistem terumbu karang dan lamun serta menganalisis laju perubahannya dalam periode waktu tertentu berdasarkan hasil interpretasi citra. Berdasarkan hasil analisis citra akan diketahui luasan dan sebaran ekosistem, kemudian dibandingkan dengan beberapa citra pada periode waktu lampau untuk menganalisis laju perubahannya. Penelitian ini dilakukan di wilayah pesisir Kecamatan Dullah Laut Kota Tual.  Metode analisis citra yang digunakan adalah teknik transformasi depth invariant indeks dan klasifikasi terbimbing. Hasil interpretasi citra Landsat 8 tahun 2014 menunjukkan luasan terumbu karang sebesar 1.934,82 ha sedangkan luasan lamun sebesar 614.43 ha. Pada tahun 2004 ke 2009 terjadi peningkatan luas ekosistem terumbu karang sebesar 133.56 Ha (4.78%), sedangkan ekosistem lamun terjadi peningkatan luas sebesar 84.69 ha (14.58%).  Pada tahun 2009 ke 2014 ekosistem terumbu karang mengalami penurunan luas sebesar 992.16 ha (33.89%) sedangkan untuk ekosistem lamun mengalami penurunan luas sebesar 51.21 ha (7.69%).

Kata kunci: citra satelit, ekosistem, pemetaan, penginderaan jauh



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RSGIS INDONESIA: Pemetaan Perubahan Ekosistem Wilayah Pesisir Kecamatan Dullah Utara Kota Tual [PAPER]
Pemetaan Perubahan Ekosistem Wilayah Pesisir Kecamatan Dullah Utara Kota Tual [PAPER]
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RSGIS INDONESIA
https://www.rsgis.info/2019/07/pemetaan-perubahan-ekosistem-wilayah-pesisir-kecamatan-dullah-utara-kota-tual.html
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https://www.rsgis.info/2019/07/pemetaan-perubahan-ekosistem-wilayah-pesisir-kecamatan-dullah-utara-kota-tual.html
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