MODIFIKASI MODEL FOREST CANOPY DENSITY (FCD) PADA CITRA LANDSAT 8 MULTI-TEMPORAL UNTUK MONITORING PERUBAHAN TUTUPAN VEGETASI DI KECAMATAN SUKASADA-BALI

A Sediyo Adi Nugraha, I Putu Ananda Citra

Abstract

Modifikasi model Forest Canopy Density (FCD) bertujuan untuk mengetahui seberapa besar peningkatan akurasi pada model FCD. Perubahan modifikasi model FCD dilakukan secara temporal pada tahun 2014 sampai tahun 2019 di Kecamatan Sukasada. Perubahan dilakukan pada indeks vegetasi dengan Soil Adjusted Vegetation Index (SAVI) dan indeks thermal dengan metode Split-Windows Algorithm (SWA). Modifikasi tersebut perlu dilakukan karena modifikasi model FCD sebelumnya berupa pengurangan penggunaan indikator. Berdasarkan hasil modifikasi model FCD yang dilakukan membuktikan model FCD SAVI memiliki akurasi sebesar 83.67% dan model FCD original sebesar 84%. Sedangkan penggunaan SWA pada model FCD memiliki kondisi konsisten sehingga dapat dinyatakan bahwa SWA mampu menyesuaikan terhadap modifikasi model FCD. Secara temporal (2014 – 2019) menunjukkan perubahan tutupan vegetasi tinggi menjadi tutupan vegetasi sedang sebesar 1115.28 Hektare. Disimpulkan bahwa model FCD SAVI memiliki perbedaan sebesar 0,33% dibandingkan model FCD aslinya. Hal ini dipengaruhi oleh kondisi variasi topografi wilayah yang menyebabkan efek bayangan.

Keywords

FCD; SAVI; SWA; Multi-Temporal

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DOI: http://dx.doi.org/10.30536/j.pjpdcd.2020.v17.a3380

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