ABSTRAKPenggunaan lahan dapat terjadi baik secara alamiah maupun oleh adanya kegiatan manusia. Informasi spasial penutup/penggunaan lahan sangat penting untuk dilakukan dan dimiliki pemerintah, mengingat banyak kebutuhan yang bisa diperoleh dari penggunaan lahan tersebut. Kabupaten Merauke Provinsi Papua merupakan salah satu kabupaten yang membutuhkan informasi spasial tersebut yang digunakan untuk melakukan evaluasi terhadap RTRW (Rencana Tata Ruang Wilayah) untuk mendukung program pembangunan. Data citra satelit multitemporal Landsat 8 LDCM OLI Tahun 2015 digunakan untuk interpretasi visual dalam menentukan sebaran distribusi spasial penggunaan lahan. Hasil penelitian ini menunjukkan terjadi kesalahan pada saat uji akurasi dengan survei lapangan dari data hasil interpretasi visual. Kesalahan tersebut terjadi pada jenis penutup lahan seperti semak/belukar, ladang, lahan terbuka, sawah dan lahan berair (rawa). Data dan pengetahuan lapangan tersebut kemudian dilakukan perbaikan yang menghasilkan sebaran distribusi penutup lahan pada masing-masing distrik di Kabupaten Merauke. Kata kunci: Penggunaan Lahan, citra Landsat 8, uji akurasi ABSTRACTLand use can occur either naturally or by human activities. Spatial information land cover/use is very important to be done and owned by the government, given the many needs that can be obtained from the information. Merauke Regency in Papua Province is one of the districts that need spatial information which will be used to evaluate RTRW (Spatial Plan) to support the development program. Multi-temporal satellite image data Landscape 8 LDCM OLI year 2015 was used for visual interpretation in determining the spatial distribution of land use. The results of this study indicated an error during the accuracy test with field survey of visual interpretation results data. The error occured in the type of land cover: shrubs, fields, open fields, rice fields and aquatic lands (swamps). Data and knowledge of the field was then carried out resulting in distribution of land cover on each District in Merauke Regency.

The development of an urban area and the increasing totally of population growth greatly affect the need for land. To satisfy these needs, the land changes into built land which causes the density of an area. This study aims to analyze the development pattern of built land and the spatial structure of Bandung City. The data used are the 2015-2020 Landsat 8 time series imagery, the 2019 SPOT-6 imagery, and the administrative boundary map. The analytical methods used to identify and differentiate between built and non-built land classes are NDVI (Normalized Difference Vegetation Index) and the OTSU method with a threshold of 0.1. Based on the analysis, the results obtained are that the changes in the area of built and non-built land in 2015 amounted to 7,115.9 Ha and in 2017 it was 5,977.3 Ha and for 2 years the area decreased by 4%. Meanwhile, in 2017-2019 there was an increase of 2%, and in 2020 it decreased by 2% again. Based on the results of the analysis, the development pattern of land developed in the city of Bandung generally spreads from the city center to the suburbs, which are used as service / government centers, trade and service areas, and infrastructure. With this spreading pattern, the spatial structure is in the form of multiple nuclei or evenly distributed throughout the city of Bandung, where the City Center or CBD is used as a landmark for the surrounding areas. The high development pattern of built land has an impact on the surrounding environment, especially residential areas that have high building density causing the settlement area to become slum and reduce water catchment areas. The conclusion of this study is that the changes in the built-in land from 2015-2020 decreased by 3%, with the development pattern of the constructed land spreading out following the form of the road network, both arterial, collector and local roads.