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Karst aquifers are crucial sources of municipal water in Iran. This study aims to assess the impact of anthropogenic activities and climate change on the Sarbalesh aquifer in Fars province, which has experienced an intensive depletion in the last three decades. To achieve this, trends in rainfall and temperature series as climate variables, and groundwater level time series as a hydrologic variable, are detected using the Mann–Kendall (MK) and modified MK tests. The magnitude and rate of the trends were supported by Sen's slope and Kendall-τ coefficient. The dominant periodicities contributing to the observed trends in the original series were identified by a combination of discrete wavelet transform (DWT), MK, and sequential MK analyses, using three error criteria and three border extension modes. The monthly rainfall, temperature, and groundwater series exhibited prominent periodicities of 8 months, 8 months, and 64 months, respectively. Similarly, the annual rainfall, temperature, and groundwater series displayed significant periodicities of 4 years, 2 years, and 8 years, respectively. Using the Pettitt-Mann–Whitney (PMW) and cumulative sum approaches, we detected abrupt shifts (change points) in the studied time series and identified their causes. The coinciding change year points in the rainfall series and Southern Oscillation Index (SOI) series, along with the negative correlation between rainfall and SOI and El Niño cycles, indicate that climate change and the La Niña phenomenon have increased SOI after the change year, resulting in decreased precipitation from November to April in the study area. Our multi-statistical approach demonstrates that the over 30-m decline in the groundwater level of the Sarbalesh karstic aquifer is due to continuous over-exploitation of water storage from this aquifer over the past 32 years. Additionally, decreasing rainfall and increasing temperature, as indicators of climate change, have further contributed to this declining trend. The result was further justified by the cross wavelet transform coherence (WTC) analysis. Our analysis provides an elaborate view of future hydro-climatic conditions, it can be used as a foundation for the management of many other karst aquifers that experience the same fate as the Sarbalesh aquifer in Iran and elsewhere. [ABSTRACT FROM AUTHOR]

Daily transportation of wastes due to its environmental, financial, and social aspects has been considered a challenging issue in developing countries' municipal solid waste management systems. The location of transfer stations as intermediate nodes in municipal solid waste management network affects optimal collection frequency. A sustainable multi-period and multi-trip vehicle routing problem integrated with relocation models was developed to redesign the intermediate transfer stations and find optimal vehicle routes and the best collection frequency for each municipal solid waste generation point. Regarding the social aspects of a sustainable solid waste management system, an extended social life cycle assessment methodology for redesign and routing operations was developed based on the UNEP guidelines. The social life cycle assessment methodology evaluated the probable social effects of the system throughout the entire life cycle using an iterative policy. In this study, selected impact subcategories and inventory indicators for the routing and redesign system were utilized to quantify the system social score. Besides, the developed model was solved for different problem instances. The results indicated that system social score was affected by collection frequencies decisions, redesign policy, and the number of demand nodes. Furthermore, the model was applied to a real-world case study resulting in a total cost reduction of 66% that occurred by a 86% reduction in weekly traveled distance and a 12% decrease in routing social score. [ABSTRACT FROM AUTHOR]