Subang Regency has the main sector in the field of agriculture that is pineapple fruit horticulture. According to Subang Spatial Planning Regulation of 2011 - 2031 agricultural potential that has the opportunity to increase the financing capacity of regional development is pineapple fruit. The objectives of this study were to: (1) delineate the available land for pineapple fruit, (2) evaluate the suitability of the land for pineapple fruit cultivation, (3) determine the potential land location for pineapple fruit development. The methodology used in this study was an analysis of Geographic Information System and land evaluation based on limiting factor to compare the characteristics of the land with the requirements of growing plants. The results showed that of potential land for the development of pineapple fruit is spread over the south side of Subang Regency. Sub-district prioritized the recommended for development is sub-district which have the area of available land and have the widest suitability, namely Cijambe Sub-district with an area of 2,124 hectares and Jalancagak sub-district with an area of 1,135 hectares.

The absence of a landfill has increased the illegal waste disposal sites in Malaka Regency, which was established between 2013 and 2021. Therefore, this study aimed to analyze suitable and available land for the development of a landfill. The methodology used consisted of 2 analysis steps, namely land suitability and land availability. Land suitability was analyzed using a multi-criteria decision-making method, which included the slope, stone type/geology, lithology, soil type, soil texture, soil depth, soil drainage, distance from settlements, and water sources. The criteria were then weighted using the Analytical Hierarchy Process (AHP) and geographic information system for overlaying. Furthermore, the results of the land suitability analysis were used to determine its availability with the aid of spatial and regional planning (RTRW), land use, and forest area maps. The results showed that the highly suitable (S1) and available terrain for the landfill in Malaka Regency covered an area of 203.37 ha or 1.73% of the regency. Also, the analysis results indicated that there was still adequate land available for the landfill.

Tin Mining raised economic people in South Bangka regency, however mining produced marginal land and was be must be fixed. The research aimed to arrange a direction of rehabilitation post-mine-tin land of environmental, economic, and social aspects for regional development in Bangka Selatan regency. Methods using were on-screen digitation, forestry ministerial rule 60th the year 2009, NPV, BCR, IRR, interview, AHP, TOPSIS, and GDP. Post-mine-tin land in the cultivation area was 11,224.8 hectares. Based on the assessment of forestry ministry rule 60th year 2009 score of oil palm was 72, and the rubber was 71.96. NPV, BCR, and IRR score of oil palm were Rp. 425,629,907.13, 2.83 and 44%, while rubber were Rp. 23,440,706.38, 1.19, and 11%. Rubber was selected by 12 stakeholders, while oil palm was two stakeholders. Based on TOPSIS, the rehabilitation plant was oil palm. District of Tukak Sadai (0.56), Toboali (0.52), and Air Gegas (0.51) were a category of very priority. District of Payung (0.44) and Simpang Rimba (0.40) were a priority. The District of Pulau Besar (0.32) was a moderate priority. District of Lepar Pongok (0.13) was a low priority, and a district of pongok islands (0.0) was a very low priority for rehabilitation. The estimated GDP per year of oil palm was Rp. 501,824,095,033.34.