Determination of the Effects of Various Spectral Index Combinations on Seasonal Land Use and Land Cover (LULC) Changes Using Random Forest (RF) Classification Case Study: Southeast Marmara Region 2016-2020


Aşci E., Genç L.

Turkish Journal of Remote Sensing, cilt.6, sa.1, ss.12-25, 2024 (Hakemli Dergi)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 6 Sayı: 1
  • Basım Tarihi: 2024
  • Doi Numarası: 10.51489/tuzal.1395189
  • Dergi Adı: Turkish Journal of Remote Sensing
  • Derginin Tarandığı İndeksler: EBSCO Education Source
  • Sayfa Sayıları: ss.12-25
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet

Özet

The effects of irregular population growth, migration mobility, and vegetation dynamics by humans can lead to changes in Land Use and Land Cover (LULC). Changes in LULC are particularly significant in coastal areas associated with industrial activities. The southeastern Marmara region, which is one of Turkey's industrial coastal areas, is also affected by the surrounding changes. The study area was selected to determine LULC change and classification accuracy using Sentinel-2 vegetation indices combinations. In the study area, the Gemlik-Bursa Northern Interchange Investments Area and TOGG (Turkey's Automobile Initiative Group) factory are located. The study area was determined by creating a 5-km buffer zone from the coast to the mainland covering Armutlu district of Yalova province and Osmangazi, Mudanya, and Gemlik districts of Bursa province. Random Forest (RF) classification technique was applied both to the original bands and to 21 new band combinations that are derived from Sentinel-2 multispectral satellite imagery for 3 seasons in 2016 and 2020. The new band combinations used for classification were created by adding the normalized vegetation indices, the original bands and the bands obtained from the simple ratio formula. In 2016, the highest accuracy results for the winter, spring, and summer seasons were observed for the OI12 (82.93%), ORF (84.44%), and ORF (84.67%) indices, while in 2020 were observed for the OI5 (85.89%), ORF (84.75%), and OI6 (84.63%) indices. In Southeast Marmara, investment decisions taken at national level have led to population growth in the region. Although it was observed that there was no significant change in classification accuracy with the addition of spectral features to the original bands such as NDVI and SR, we believe that future testing of the data with different statistical and machine learning methods provide higher accuracy