Search Results (6)

This study investigates the relationships between surface deformations and groundwater management in the Metropolitan Region of Guatemala (MRG), a geologically complex area subjected to different types of ground deformation, integrating five municipalities around Guatemala City. Deformation patterns were characterized through Multi-Temporal Interferometric Synthetic Aperture Radar (MT-InSAR) and compared with groundwater piezometric data. The MT-InSAR technique allowed the identification of the main deformation areas in the MRG. Previously reported maximum subsidence rates ranged from −60 mm/year to −20 mm/year, with local maxima fitting with the extraction well fields of Villanueva and Petapa, in the South basin. Subsidence bowl or depression cone deformation areas were identified and located, similar to those described in the literature for other urban areas, such as Jakarta, Semarang, and Mexico City, among others. This study contextualizes these findings within the detailed hydrogeological framework of the region, highlighting the long-standing generalized exploitation of groundwater resources for urban, agricultural, and industrial uses. Historical data on water wells, piezometric levels, and groundwater flow patterns indicate that groundwater extraction has surpassed the natural recharge rates, particularly in the southern and eastern hydrological basins in the study area. This research identifies a critical need for sustainable water management, emphasizing the importance of integrating MT-InSAR into groundwater monitoring schemes. Full article

The Jakarta metropolitan region (the Jakarta megacity), located in the fourth most populous country in the world (Indonesia), is the largest urban agglomeration in the Global South—continues to grow, especially in its outer suburbs (Bekasi Regency). The governments (Central and Local) tend to implement an urban-biased policy (UBP) to connect Bekasi Regency into global production networks and boost Bekasi Regency’s income. However, previous case studies of China and Vietnam have revealed that the UBP increases economic disparities between urban and rural areas. Therefore, this study probes urban–rural economic disparities and their characteristics at a microregional level (desa/kelurahan) in the Bekasi Regency. The methods applied in this study are geographically weighted regression (GWR), RULT index, and quantitative zoning. The results show that almost all desa/kelurahan in the high poverty (HPv) cluster are rural neighborhoods (desa/kelurahan with rural characteristics). By contrast, only 5% of desa/kelurahan with urban characteristics are HPvs, while the remainder are in the low poverty (LPv) cluster. Rural neighborhoods with HPv tend to have a high percentage of households dependent on agriculture. Thus, empirical results (with a case of a Global South megacity suburb) further support previous evidence that the UBP has caused urban–rural economic disparities. Full article

After decentralization, there was massive development in Jakarta megacity’s outer suburbs (JMOS), especially in Bekasi and Tangerang regencies, marked by large-scale industrial estate/park (LSIEP) and followed by new town developments. However, this process led to the emergence of “chaotic” urban-rural land patterns. This study sought to identify the extent to which LSIEP development has affected rural-urban land transformation (RULT). The primary data were land use/cover (LUC) data from 2005, 2015, and 2020 and the LSIEP distributions. The methods applied are the Patch-generating Land Use Simulation (PLUS) model for 2025’s LUC prediction and the RULT index approach, RULT index development using the analytical hierarchy process. These combined approaches were novel in Indonesia, which usually relies on Cellular Automata (CA)-Markov, overlay (spatial), and descriptive statistics analyses to describe the RULT phenomenon. It was found that the villages located around the LSIEP close to the Jakarta megacity toll road network and those adjacent to the municipality (city) had been transformed into urban areas, while villages far from those locations were still rural. This study’s results help clarify the rural to urban transformation in Jakarta megacity’s outer suburbs and could be used as input for spatial planning policy. Full article

The urban form is the physical configuration of a city, developed over time and space. Urban form can be considered at different scales, from region to neighborhood, each carrying a different focus. North Cianjur serves as the hinterland and one of the conurbation corridors of the Jakarta–Bandung Mega-Urban Region, meaning that the balance between its function as an environmental buffer area and the destination of urban growth needs to be planned carefully. This paper explores the dynamics in North Cianjur and employs several model scenarios as a planning intervention using landscape dynamic tools and land-change modeling, with three scenarios employed: Business as Usual (BAU), Spatial Planning Policy (SPP), and Urban Containment (UCT). The result show that North Cianjur has transformed into a polycentric region with two urban zones, a peri-urban zone, and a rural zone in the northernmost part of the region. Urban form trends show a sprawling built-up pattern outside urban zones, and a compacted trend in urban zones due to expansion from the Jakarta and Bandung Metropolitan Area. UCT models appear to be the most optimal for implementation in North Cianjur, representing a way to accommodate urban growth and expansion inside the urban center while still maintaining regional sustainability. Full article

Suburbanization of Bekasi Regency as a part of the Jakarta Metropolitan Area (JMA) is mainly induced by urban expansion and industrialization, in which the suburbanization process threatens food security and ultimately disrupts urban sustainability. This study aims to characterize industrial-dominated suburban formation to manage the suburbanization process using a quantitative zoning method. In assessing the characteristics of industrially dominated suburban, this research utilizes the concept of urban–rural development (URD), which consists of five aspects of development (socioeconomic, population, industrial, land-use, and environmental). Factor analysis and Rustiadi’s spatial clustering form regional clusters using all variables while referring to the URD concept. The results showed that there are three regional typologies: (i) urban, (ii) Desakota, and (iii) rural regions. Urban regions are situated in the central and western parts of Bekasi Regency, rural regions are situated in the northern part of Bekasi Regency, while the desakota region is situated between urban and rural regions. Characteristics of each typology then could be used as the basis for development policy in Bekasi Regency which is then constructed towards the protection of agricultural areas in the rural and desakota regions, serving both food security function and strengthening urban sustainability of JMA. Full article

Mega-urban development in Monsoon Asia has a relatively similar pattern, which leads to the formation of Mega-Urban Region (MUR). Such urban development potentially threatens sustainability as it vastly expands to encroaching rural areas. North Cianjur has been experiencing urban expansion from its surrounding metropolitan areas of Jakarta and Bandung that leads to the formation of urban sprawl and many other environmental problems. In this case, spatial characterization based on a quantitative and objective approach is urgently needed to provide better insight into the development of the mega-urban region’s suburb. This study proposed a quantitative and objective approach which was developed based on a quantitative zoning method. This study aims to characterize the region affected by urban expansion and urban form dynamics in North Cianjur using spatial clustering and spatial metrics approaches. The results showed that North Cianjur has four different zones consisting of two urban zones, a peri-urban zone, and a rural zone. Furthermore, the dynamics of urban forms in North Cianjur showed a trend of a more compact form in the urban zones while outside the urban zones it has become more sprawled and dispersed. This implies that spatial planning policies are incapable of containing and managing the massive expansion forces which were coming from Jakarta metropolitan, Bandung metropolitan, as well as Cianjur urban zones itself. Thus, the quantitative zoning method could enhance spatial planning, as different zones of urban–rural typology and urban from in the mega-urban suburb can be defined as a base for developing more specific effort in managing land-use changes. This approach could be adopted by other regions which have similar characteristics. Full article