Population boom in the borderlands globally
Population boom in the borderlands globally
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DOI：
10.1016/j.jclepro.2022.133685
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发表时间：
2022-08
影响因子：
11.1
通讯作者：
Chi-wei Xiao;Zhi-ming Feng;Zhen You;Fangyu Zheng
中科院分区：
文献类型：
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作者：
Chi-wei Xiao;Zhi-ming Feng;Zhen You;Fangyu Zheng
人口是地球系统的重要组成部分和关键要素，包括生态环境问题。然而，目前与人口有关的分析主要限于行政单位（例如，国家），而不是边境地区。本文利用20多年（2000-2020年）基于WorldPop的人口数据，首次对边境地区人口的分布、格局和趋势进行了全球覆盖的时空分析。全球边境地区经历了一个明显和加速的人口增长和聚集过程。地球总人口的六分之一以上位于60公里缓冲区的（跨）边界地区，在过去21年中，全球人口增长的五分之一以上发生在那里。边境地区每年的人口增长率高于全球平均水平8%以上。总体而言，313个边境地区中有176个（56%）呈现出人口聚集的趋势。边境人口在增长区和下降区的比例从2000-2010年的6：4变为2010-2020年的7：3。超过70%的边境地区人口净增长，主要分布在印度、巴西和尼日利亚等发展中国家。我们的新见解可以为探索人口增长的边界倾向特征的机制，因果关系和影响响应提供指导和实践，促进边界地理学和环境科学等跨学科和多学科研究。因此，我们呼吁各国政府和科学界采取国际主动行动和作出更有效的努力（例如，2030年可持续发展目标），以进一步研究边境地区的可持续发展问题。
Human population is an important component and key element of the Earth system, including eco-environmental issues. However, current population-related analyses are mainly restricted to administrative units (e.g., countries) only, and not the border areas. Using more than two-decades (2000–2020) of WorldPop-based population data, here we conduct the first global-coverage, spatio-temporal analysis of the distributions, patterns, and trends of population in the borderlands. Global borderlands have undergone an obvious and accelerating process of population growth and agglomeration. Above 1/6 of Earth's total population was located in the (cross-)border areas of a 60-km buffer zone, where over 1/5 of global population growth occurred over the past 21-years. The growth rate of population per year in the borderlands was greater than 8% above the global average. Overall, 176 out of the 313 borderlands (56%) showed an increasing trend of population agglomeration. The ratios of border population in growth and decline areas changed from 6:4 in 2000–2010 to 7:3 in 2010–2020. More than 70% of borderlands had net population increases, mainly distributed in developing countries like India, Brazil, and Nigeria. Our new insights can provide guidance and practice for exploring the mechanisms, cause-effects and impact-responses of border-prone characteristics of population growth, promoting inter- and multi-disciplinary studies such as border geography and environmental sciences. We thus appeal for international initiatives and more effective efforts from governments and the scientific community (e.g., the 2030 Sustainable Development Goals) to further study the issues of sustainable development in borderlands.