The City of Atlanta has seen phenomenal urban expansion, racial re-composition, and migration patterns over decades. In this paper, we try to answer overarching question: Has the economic development and urban sprawl in Atlanta been accompanied by racially diverse neighborhoods? Or has the economic development in Atlanta led to a racially integrated landscape? We use demographic data from the U.S. Census Bureau, the Internal Revenue Service, and the Panel Study for Income Dynamics. First, we use hotspot analysis to study temporal changes in spatial patterns of concentration of the black population in Atlanta. Second, using the index of dissimilarity (D) and interaction index (I), we estimate the extent of segregation between whites and blacks. Third, we calculate the migration effectiveness in three sub-regions of Atlanta. The results show that hotspots of the black population are located in the central and south-central parts of Atlanta, and have expanded predominantly in the eastern and southern directions during the last four decades. Racial diversity has increased generally in the counties immediately north of the city proper, but the southern and peripheral counties had less racial diversity. Remarkably, southern Atlanta did not witness the economic development in the same way as northern Atlanta. The migration effectiveness index shows that, in recent years, Atlanta suburbs attracted more migrants, both from within the Atlanta region and from the rest of the United States, as compared to the Atlanta city proper. In recent decades, neighborhoods in the Suburb-I becoming racially more diverse, and one would expect this trend will extend in other regions too in the future.

中文翻译：

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多样性还是种族隔离？亚特兰大邻里人口统计的多年代空间分析

几十年来，亚特兰大市已经经历了惊人的城市扩张，种族重组和移民模式。在本文中，我们试图回答一个最主要的问题：亚特兰大的经济发展和城市扩张是否伴随着种族多样化的社区？还是亚特兰大的经济发展导致了种族融合的局面？我们使用来自美国人口普查局，美国国税局和收入动态小组研究的人口统计数据。首先，我们使用热点分析来研究亚特兰大黑人人口集中度的空间格局的时空变化。其次，使用相异指数（D）和互动指数（I），我们估计了白人和黑人之间的隔离程度。第三，我们计算了亚特兰大三个分区的迁移效率。结果表明，黑人人口的热点位于亚特兰大的中部和中南部，并且在过去的40年中主要向东部和南部方向扩展。紧邻城市北部的县的种族多样性总体上有所增加，但南部和周边县的种族多样性则较少。值得注意的是，亚特兰大南部没有像亚特兰大北部那样见证着经济发展。迁移效率指数显示，与亚特兰大市区相比，近年来亚特兰大郊区吸引了更多的移民，无论是来自亚特兰大地区内部还是来自美国其他地区的移民。近几十年来，Suburb-I的社区在种族上变得更加多样化，