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Tracking the settlement of culturally and linguistically diverse (CALD) populations serves as the foundation for population projection, urban planning, and policy making to achieve social justice, equity, and multicultural harmony. Drawing on census data in 2001, 2006, 2011, 2016 and 2021, our study contributes an Australian nationwide time-series study of the settlement of CALD populations at a fine neighbourhood level, enabling long-term tracking of changing settlement patterns and residential diversity and revealing potential drivers for such changes. Following segmented assimilation theory, we examine whether the CALD populations with higher education levels, higher socioeconomic status and better language skills may tend to partially move out and partially retain their ethnic concentrations, resulting in assimilation that occurs segmentally across urban fabrics. We find that both existing CALD communities and the formation of new CALD concentrations in peri-urban regions exhibit segmented assimilation over time. We also find the settlement patterns of CALD populations in urban areas are more diverse than in rural areas in most states/territories. Our study provides spatially explicit evidence with far-reaching policy implications for migration, place-based health, population and urban planning. • It contributes an Australian nationwide time-series study of the settlement of CALD populations. • The settlement changes of CALD populations exhibit segmented assimilation over time. • Early CALD communities and new CALD concentrations in peri-urban regions concurrently exist. • Their settlement patterns in urban areas are more diverse than in rural areas in most states. • Speaking good English and high education levels play important roles in driving settlement shift. [ABSTRACT FROM AUTHOR]

Extreme heat, also known as the silent killer that conceal its lethal effect behind heat-related deaths, has become one of the deadliest natural hazards globally. However, the evaluation of heat risks in many countries remains incomplete, overlooking an important component on population health conditions in the evaluation framework. Drawing on the IPCC's risk assessment framework, this study presents, for the first time, a comprehensive heat health risk assessment in Australian capital cities, consisting of three individual indexes—the heat exposure index, heat hazard index and heat vulnerability index—at the finest census unit, and an overall heat health risk index (HHRI). By involving health-related indicators in heat risk assessment, our evaluation takes into account people's sensitivity to heat in developing the heat health risk indexes. Using the HHRI, we identify high heat risk areas appearing primarily in higher density residential areas with some distances away from the inner cities. We also find that the inequity of demographic and socioeconomic characteristics, housing features, and built environment features exists in areas with different levels of heat risks. Our findings contribute not only to profiling heat risks in Australian cities, but also empirically advance our understanding of place-based risk reduction in the Southern Hemisphere by linking climate science with health and spatial science research. • This study contributes the first heat health risk assessment in Australian cities. • This study generates the index of heat hazard, vulnerability and exposure and the overall index of heat health risk. • The assessment framework can be applied to other contexts and natural hazards. • Heat health risk related datasets are publicly available. • Spatial and socioeconomic inequity exists across areas with different levels of heat risk. [ABSTRACT FROM AUTHOR]