EVALUASI TINGKAT AKURASI KLASIFIKASI HABITAT BENTIK PERAIRAN DANGKAL PADA PERBEDAAN JUMLAH KELAS MENGUNAKAN CITRA SATELIT RESOLUSI TINGGI
STUDI KASUS: PULAU SEBARU BESAR, KEPULAUAN SERIBU
Keywords:
citra Worldview-2, habitat bentik, Pulau Sebaru BesarAbstract
Pulau Sebaru Besar merupakan salah satu pulau yang terdapat di bagian utara Kepulauan Seribu yang memliki keanekaragaman habitat perairan laut dangkal. Citra resolusi tinggi diintegrasikan dengan data observasi lapang dapat menjadi alternatif sumber informasi terkait habitat bentik perairan laut dangkal. Penelitian ini bertujuan untuk melakukan evaluasi akurasi hasil klasifikasi habitat bentik perairan dangkal di Pulau Sebaru Besar Kepulauan Seribu menggunakan citra WorldView-2 dengan penerapan 9 dan 7 kelas serta melakukan uji akurasi hasil klasifikasi. Data citra WorldView-2 yang digunakan merupakan salah satu citra resolusi tinggi dengan resolusi spasial 1,84 x 1,84 meter2 yang diakuisisi pada tanggal 7 Mei 2018. Survei lapang habitat bentik perairan dangkal dilakukan pada tanggal 10-12 Mei 2018 dan 09-10 Desember 2018 dengan teknik foto kuadrat yang menghasilkan sampelsampel sebanyak 159 titik. Persentase tutupan habitat setiap foto kuadrat dianalisis dengan perangkat lunak Coral Point Count with Excel extensions (CPCe). Berdasarkan hasil penelitian akurasi klasifikasi pemetaan habitat bentik perairan dangkal untuk 9 dan 7 kelas dihasilkan akurasi sebesar 63,2% dan 67,5% dengan algoritma Maximum Likelihood Classification (MLC). Habitat bentik perairan dangkal dapat dipetakan dengan baik, sehingga bisa menjadi masukan basis data informasi untuk pengelola Taman Nasional Kepulauan Seribu (TNKpS) kaitannya dalam usaha monitoring habitat bentik terkhusus terumbu karang dan upaya konservasi habitat perairan laut dangkal.
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