Metropolitan Urban Mamminasata South Sulawesi, Indonesia as the object of study is explored in the core-peripheral spatial interaction towards the formation of suburban service centers. The problems raised in this study are (i) is there a relationship/correlation between spatial integration, spatial interaction, and urban agglomeration to the formation of urban activity systems and (ii) how the formation of urban activity systems works as a determinant of economic growth, land use change and environmental quality degradation towards sustainable development in the metropolitan city of Mamminasata. Comparative studies of suburban areas have been carried out over three time periods (2001, 2015 and 2019). Data elaboration on observations, surveys and documentation is done to describe urban dynamics in terms of economic, social and environmental aspects. Path analysis is used to address direct effects, indirect effects, differences, and dependencies between urban elements. The gravity model is used to analyze the spatial interactions of the core city with the periphery. The study results show that spatial integration, spatial interaction and urban agglomeration have a positive effect on the system of urban activity and economic growth in the outskirts of the Mamminasata Metropolitan area. The results of this study recommend policy makers and urban planners that land use change, spatial integration and urban spatial interactions on the spatial scale of metropolitan cities to require the implementation of sustainable development concepts oriented towards saving the environment, ensuring fairness in economic access and creating social cohesion, in line with meeting national Metropolitan city development targets by 2030.

Regional economic growth is closely related to the optimization of the use of natural and human resources. This study aims to analyze: (1) The use of natural and human resource potential works as a determinant of the economic growth of Bulukumba Regency; (2) The influence of natural resources, human resources, community culture and regulation on economic growth in Bulukumba Regency. The research method used is a combination of mixed models, namely a combination of quantitative and qualitative approaches. Data was obtained through observation, survey and documentation. The results of the study show that optimizing the use of natural resources without human resource development causes its contribution to economic growth in Bulukumba Regency to be quite low which becomes an obstacle to the acceleration of economic development. The influence of natural resources, human resources, and community culture together has a significant effect on economic growth in Bulukumba Regency with a coefficient of determination 47.2%. This study recommends optimizing resource potential and strengthening human resource capacity through the use of technology and changes in community culture, which will encourage economic growth in Bulukumba Regency, South Sulawesi Province, Indonesia.

Regional development in developing countries is predominantly oriented towards exploitation of natural resources and tends to ignore environmental problems. Optimization of the utilization of natural resources towards the development of the agropolitan area has an impact on economic growth and increases farmers' income in rural areas. This study aims to examine the significance of the development of agropolitan-based agribusiness areas in rural areas and the direct and indirect relationship of the development of agropolitan-based agropolitan areas to the improvement of community productive economic endeavors and ecosystem sustainability. Research data were obtained through observation, surveys, and documentation. The research method used a qualitative-quantitative combination in sequence. The results of the regression analysis show that the development of the agropolitan area has a significant effect on regional economic growth, and the results of the path analysis confirm that the development of the agropolitan area based on rural agribusiness has a significant effect on increasing the productive economy of the community and the ecosystem sustainability. The results of this study confirm that an increase in the productivity of the regional economic base sector has an impact on the development of agropolitan areas based on the rural agribusiness system in the direction of increasing community income and the regional economy. This article offers the concept of system integration in the development of agropolitan areas based on ecosystem sustainability and regional economic growth in developing countries.

Permasalahan yang dialami DAS Binanga Lumbua dari hasil observasi singkat sebelumnya mengindikasikan bahwa DAS ini mengalami kekritisan. Hal tersebut terindikasi karena pada saat musim hujan, wilayah ini mengalami banjir akibat luapan dari DAS. Ketika musim kemarau, wilayah ini mengalami kekeringan dan benar-benar tandus. Salah satu hal yang dapat dilakukan dari adanya indikasi kekritisan pada DAS ini adalah dengan tetap menjaga keseimbangan ekosistem di DAS melalui upaya Pengelolaan DAS menggunakan teknologi spasial Sistem Informasi Geografis (SIG). Tujuan penelitian ini diarahkan untuk mengalisis tingkat kekritisan ekosistem lingkungan DAS Binanga Lumbua dan memberikan arahan pemanfaatan ruang untuk mengelolah lingkungan di DAS Binanga Lumbua berdasarkan pada zonasi tingkat kekritisan. Metode analisis yang digunakan adalah teknik analisis overlay dengan mengunakan teknologi spasial GIS. Kekritisan DAS dapat dilihat melalui pendekatan keberadaan air tanah yang berdasarkan pada parameter hidrogeomorfologi dan analisis ini menghasilkan peta tingkat kekritisan DAS. Dari peta tingkat kekritisan DAS inilah yang dijadikan dasar dalam menentukan langkah pengelolaan apa yang akan dilakukan di area DAS Binanga Lumbua ini. Diharapkan pula, penelitian ini bisa dijadikan sebagai langkah awal wilayah ini dalam mengatasi permasalahan lingkungan pada daerah aliran sungai setempat.