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Accurate paddy field area data is a crucial factor in agricultural development planning, particularly as a basis for formulating data-driven programs and policies. One of the main problems encountered at the regional level is the continued reliance on administrative data that does not fully reflect actual field conditions due to land use changes, boundary inaccuracies, and limited verification processes. This study aims to determine an appropriate method for obtaining accurate paddy field area data through the application of Geographic Information Systems (GIS) in Maros Regency. The research employed a descriptive quantitative approach using spatial analysis methods. The data utilized consisted of Paddy Field Base Data, National Geospatial Base Maps, high-resolution satellite imagery, and field verification data. Spatial analysis was conducted through digitization, overlay, intersect, and area calculation processes using ArcMap 10.8 software. The results indicate that GIS-based spatial analysis produces more accurate and verified paddy field area data compared to conventional administrative data. The integration of spatial data with field verification effectively minimizes measurement errors and boundary discrepancies. This method can serve as a reliable reference for providing accurate agricultural base data to support planning and policy-making in the agricultural sector.

The development of built-up land in Tanjungpinang City has demonstrated rapid spatial dynamics, in line with the increasing intensity of urban activities since its designation as the capital of Riau Islands Province in 2002. This study aims to analyze the changes in built-up land in Tanjungpinang City over the period 2003 to 2023 and to identify the key factors driving this transformation. The research employed spatial analysis based on Geographic Information Systems (GIS), utilizing satellite imagery maps from the years 2003, 2013, and 2023. The findings indicate that built-up land expanded from 1,133.91 hectares (8%) in 2003 to 3,848.67 hectares (26%) in 2023, with the predominant direction of expansion occurring toward the eastern and southern parts of the city. The primary factors contributing to this growth include population increase, the development of new activity centers such as Pulau Dompak, and the construction of major infrastructure, notably the development of DI Panjaitan streets. These results suggest a growing tendency toward urban sprawl in the physical development of Tanjungpinang City, thus requiring adaptive and sustainable spatial planning strategies.

Sitiung is a nagari in West Sumatra. It is located in Sitiung District, Dharmasraya Regency, West Sumatra Province. This Nagari has an area of about 32.27 km2 and is about 18 km from Punjung Island, the capital of the regency. It is also the administrative center of Sitiung Sub-district. Mapping was conducted in the area to determine the administrative boundaries between jorong and the topography of the nagari. A map is simply defined as a representation of an area in which symbols indicate information about the area. Due to the fact that maps indirectly serve as a communication tool between the creator and the person reading it, the captions relating to the contents of the map are very important. The more detailed and complete the information contained in the map, the better and higher quality it is. In addition, it is easier for readers and users to use it. Data collection in the field can be done in various ways. Administrative and Topographic maps will be produced from the measurements taken.

The coastline changes from time to time in line with natural changes such as wave activity, and sediment. This study aims to determine the changes in coastline on the coast of Pati Regency in 2015-2024. The research method utilises Geographic Information System (GIS) and remote sensing technology by taking Landsat-8 satellite image data processed using ArcGis application then calculated using Haversin Formula and Euclidean Distance calculation. The results showed that the largest shoreline change was found in transect 3 located in Dukuhseti Subdistrict, Kembang Village with a value of 453.92 metres within 10 years and the smallest shoreline change value occurred in transect 8 located in Tayu Subdistrict, Tunggulsari Village with a change value of 2.41 metres within 10 years.

The Map is a picture of the earth's surface that is displayed on a flat plane with a certain scale and the depiction of the earth's surface is reduced to a certain scale in the form of symbols that are selective in a certain projection system that is represented in two dimensions from a three-dimensional space. Various types of data can be described and explained in maps and provide information on the correlation of data to the geographical conditions (geospatial information) of an area which can then be used as a tool in policy formulation, in this case the customary area of ​​the Ayapo village in the East Sentani District. This research was conducted using a mapping method using spatial data based on satellite imagery from Google Earth Pro and community participation through field surveys through interviews. The data was then processed using ESRI ArcGIS software. The research was conducted in the Ayapo traditional village, Jayapura Regency, Papua Province. From the results of the information depiction carried out, it was obtained a map of the Ayapo village, a mapping of the distribution of indigenous peoples which included traditional leaders and tribal chiefs as well as a map of the structure of the customary space. Mapping also obtained the development of the ayapo village for 3 years, namely 2002, 2014, and 2021 which showed the growth of the village spread out along the coast of Lake Sentani in a linear form. This customary mapping becomes a source of information for the development of traditional traditional villages in Jayapura district.