Analisis Perubahan Penutup Lahan Berbasis Citra Sentinel-2a Di Kecamatan Ubud Tahun 2020-2025

Niatus Sholikhah; Putra Ardi Hamzah; Dian Zumrotin Khoiriyah; Indriani Anggita Marsyilia; Zahra Amelia; Razita Dwi Khairina; Alfiyatus Shufiyah; Aldea Noor Alina

doi:10.36456/de4m7e66

Authors

Niatus Sholikhah Geography Education Department, Social and Political Science Faculty, Universitas Negeri Surabaya
Putra Ardi Hamzah Geography Education Department, Social and Political Science Faculty, Universitas Negeri Surabaya
Dian Zumrotin Khoiriyah Geography Education Department, Social and Political Science Faculty, Universitas Negeri Surabaya
Indriani Anggita Marsyilia Geography Education Department, Social and Political Science Faculty, Universitas Negeri Surabaya
Zahra Amelia Geography Education Department, Social and Political Science Faculty, Universitas Negeri Surabaya
Razita Dwi Khairina Geography Education Department, Social and Political Science Faculty, Universitas Negeri Surabaya
Alfiyatus Shufiyah Geography Education Department, Social and Political Science Faculty, Universitas Negeri Surabaya
Aldea Noor Alina, S.T., M.T. Geographic Information Science Department, Social and Political Science Faculty, Universitas Negeri Surabaya

DOI:

https://doi.org/10.36456/de4m7e66

Keywords:

klasifikasi, maximum likelihood, penutup lahan

Abstract

Perubahan penutup lahan merupakan fenomena yang dipengaruhi oelh perkembangan aktifitas manusia dan berdampak pada kondisi lingkungan. Kecamatan Ubud sebagai kawasan pariwisata di Kabupaten Gianyar mengalami perkembangan infrastruktur dan aktifitas ekonomi yang berpotensi mengubah penutup lahannya. Penelitian ini bertujuan untuk menganalisis perubahan penutup lahan tahun 2020-2025 menggunakan citra Sentinel-2A yang diperoleh melalui Google Earth Engine. Klasifikasi dilakukan dengan metode Maximum Likelihood Classification, sedangkan uji akurasi menggunakan Compute Confusion Matrix berdasarkan Parameter Overall Accuracy, User Accuracy, Producer Accuracy, dan Kappa Accuracy. Hasil klasifikasi menghasilkan empat kelas penutup lahan, yaitu sawah, permukiman, badan air, dan vegetasi lain, dengan nilai OA sebesar 92% dan Kappa sebesar 0,90 yang menunjukkan akurasi sangat kuat. Analisis ini menunjukkan luas sawah berkurang 190,200 ha, sedangkan badan air bertambah 448,314 ha selama periode penelitian. Hasil penelitian menunjukkan bahwa metode ML efektif untuk memetakan dan menganalisis dinamika perubahan penutup lahan di Kecamatan Ubud.

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