urbanization

城市化
  • 文章类型: Journal Article
    The emergence and spread of novel viral pathogens is a major threat to human health, particularly in the context of climate and human-induced change in land use. Alongshan virus (ALSV) is a tick-borne virus associated with human disease, which was first identified in northeast China. More recently, several studies reported the emergence of ALSV in mammalian and arthropod hosts in multiple different countries outside of Asia, and the first viral genome sequencing data has become available. ALSV is a member of the Jingmenvirus group closely related to the Flaviviridae family. Unusually, the positive-sense, single-stranded RNA genome of ASLV is segmented and consists of four distinct segments, two of which show homology with the NS3 and NS5 protein encoding regions of non-segmented flaviviruses. Transmission of arthropod-borne pathogens will likely increase in the future due to environmental change mediated by a variety of environmental and ecological factors and increasing human encroachment into wild animal habitats. In this review, we present current knowledge of global ALSV distribution and emergence patterns, highlight genetic diversity, evolution and susceptible species. Finally, we discuss the role of this emerging tick-borne virus in the context of urbanization and global health.
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  • 文章类型: Journal Article
    UNASSIGNED: As China has undergone the processes of urbanization and economic development, a large migrant population has emerged, creating new family migration trends. Family migration brings about changes in urban integration costs and benefits, affecting health investment.
    UNASSIGNED: The primary objective of this research is to investigate the influence of urban integration of migrant workers\' families on their mental wellbeing, with the aim of offering policy recommendations conducive to the realization of a comprehensive public health strategy in China.
    UNASSIGNED: This paper uses multi-dimensional indexes to measure family urban integration, covering economic, social and psychological dimensions, which may consider the complexity of integration. Utilizing a machine learning clustering algorithm, the research endeavors to assess the level of urban integration experienced by migrant workers and their respective families. The analysis discerns three distinct clusters denoting varying degrees of urban integration within these familial units, namely high-level, medium-level, and low-level urban integration. We applied binary logit regression models to analyze the influence of family urban integration on the mental health among migrant workers. Then we conducted a series of robustness tests.
    UNASSIGNED: The results show that family urban integration decreases the probability of depressive symptoms by 14.6 percentage points. Further mechanism tests show that family economic integration enhances the psychological wellbeing of migrant workers by elevating their income status. Family social integration decreases depressive symptoms by increasing social status. Family psychological integration increases the psychological health of migrant workers by making them more satisfied with their lives. The heterogeneity test shows that family urban integration and its different dimensions have a strong impact on the depressive symptoms of women, first-generation, and less-educated groups.
    UNASSIGNED: This study finds that family urban integration and its economic, social, and psychological dimensions significantly reduced the depressive symptoms of migrant workers. The results of this study lead the authors to recommend formulating a family-centered policy for migrant workers to reside in urban areas, optimizing the allocation of medical resources and public services, and improving family urban integration among migrant workers in order to avoid mental health problems in the process of urban integration.
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  • 文章类型: Journal Article
    A spatial-genomic analysis reveals that bird species living closer to humans have higher diversity of the pathogen Campylobacter and its antimicrobial resistance genes. This suggests that urbanization could promote pathogen transmission among wild animals and, potentially, humans.
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  • 文章类型: Journal Article
    心理健康障碍的患病率,一个关键的残疾原因,与人口和社会经济因素有关。然而,关于心理健康和城市环境的数据有限。城市化使人口面临环境压力,特别影响到具有复杂城市安排的中低收入国家。我们使用遥感和人口普查数据来调查环境因素与心理健康障碍之间的潜在联系。使用欧洲航天局(ESA)全球WorldCover产品以10m的分辨率评估土地覆盖变量,以及来自巴西统一卫生系统情报部门(DATASUS)的精神健康诊断病例数据库(n=5769)来自阿雷格里港市的每个医疗机构。利用机器学习算法和多项式回归模型建立了心理健康数据与土地覆盖的关联。结果表明,邻里水平较高的树木覆盖率与较好的心理健康指数相关。还发现较低的心理健康指数与较高的人类发展指数有关。我们的结果强调了城市环境中绿色的潜力,以实现更好的心理健康结果。
    The prevalence of mental health disorders, a key disability cause, is linked to demographic and socioeconomic factors. However, limited data exists on mental health and the urban environment. Urbanization exposes populations to environmental stressors, particularly affecting low-middle-income countries with complex urban arrangements. We used remote sensing and census data to investigate potential connections between environmental factors and mental health disorders. Land cover variables were assessed using the European Space Agency (ESA) global WorldCover product at 10 m resolution together with the database of mental health diagnosed cases (n = 5769) from the Brazilian Unified Health System\'s Department of Informatics (DATASUS) from every health facility of the city of Porto Alegre. The association of mental health data with land cover was established with machine learning algorithms and polynomial regression models. The results suggest that higher trees cover at neighborhood level was associated with better mental health index. A lower mental health index was also found to be associated with an higher Human Development Index. Our results highlight the potential of greenness in the city environment to achieve substantially better mental health outcomes.
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  • 文章类型: Journal Article
    微库蚊是库蚊的一个亚属,主要与野生环境中的自然繁殖地有关,如割竹子,树洞和凤梨科。然而,城市地区和靠近人类栖息地的人工繁殖地中的库蚊(Microculex)物种的最新发现表明,它们对城市化的容忍度越来越高。尽管对该亚属的分散研究表明,某些物种与受人类影响的地区有关的生态效价,缺乏关于采血习惯的研究,微库蚊的载体容量和分类学。由于有关此子属的所有信息都是零散的,并且在大多数情况下仅限于物理库,这篇评论旨在汇编过去一个半世纪以来发表的有关Microculex的所有信息,以便对该主题感兴趣的专家可以更容易地查阅。还讨论了该亚属的某些物种通过定植人工繁殖地来适应人类影响的环境,从而成为动物和人类疾病的潜在媒介的能力。
    Microculex is a subgenus of Culex that is mainly associated with natural breeding sites in wild environments such as cut bamboos, tree holes and bromeliads. However, recent findings of Culex (Microculex) species in bromeliads in urban areas and in artificial breeding sites close to human habitations suggest that they are becoming more tolerant of urbanization. Whilst dispersion studies of this subgenus have shown the ecological valency of some species in relation to human-impacted areas, there is a scarcity of studies on the blood-feeding habits, vector capacity and taxonomy of Microculex. As all the information about this subgenus is fragmented and restricted in most cases to physical libraries, this review seeks to compile all the information on Microculex published over the last century and a half so that this can be more easily consulted by specialists interested in the subject. The ability of some species of this subgenus to adapt to human-impacted environments by colonizing artificial breeding sites and thus become a potential vector of animal and human diseases is also discussed.
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  • 文章类型: Journal Article
    背景:高血压(HBP)和糖尿病(DM)是全球最常见的两种心血管疾病,特别是在社会经济地位较低的个人中。研究已经将住宅绿色与降低HBP和DM的风险联系起来。然而,关于SES是否可以改变住宅绿色与HBP和DM的关联的证据有限。
    方法:基于一项针对44,876名成年人的全国代表性横断面研究,我们以1km的空间分辨率生成了归一化植被指数(NDVI),以表征个体的住宅绿色水平。行政分类(城市/农村),夜光指数(NLI),个人收入,和教育水平被用来表征区域城市化和个人SES水平。
    结果:我们观察到与城市地区相比,农村地区NDVI与HBP和DM的负相关较弱。例如,以及每四分位数范围(IQR,0.26)住宅NDVI增量为0~5年移动平均线,农村地区HBP的OR为1.04(95CI:0.94,1.15),城市地区HBP的OR为0.85(95CI:0.79,0.93)(P=0.003).随着NLI水平的下降,NDVI与DM患病率呈负相关(P<0.001).此外,在收入较低且受教育程度较低的人群中,居民NDVI与HBP和DM患病率的负相关较弱.
    结论:较低的地区城市化程度和个体SES可以减弱住宅绿色与HBP和DM患病率的关联。
    BACKGROUND: High blood pressure (HBP) and diabetes mellitus (DM) are two of the most prevalent cardiometabolic disorders globally, especially among individuals with lower socio-economic status (SES). Studies have linked residential greenness to decreased risks of HBP and DM. However, there has been limited evidence on whether SES may modify the associations of residential greenness with HBP and DM.
    METHODS: Based on a national representative cross-sectional study among 44,876 adults, we generated the normalized difference vegetation index (NDVI) at 1 km spatial resolution to characterize individuals\' residential greenness level. Administrative classification (urban/rural), nighttime light index (NLI), individual income, and educational levels were used to characterize regional urbanicity and individual SES levels.
    RESULTS: We observed weaker inverse associations of NDVI with HBP and DM in rural regions compared to urban regions. For instance, along with per interquartile range (IQR, 0.26) increment in residential NDVI at 0∼5 year moving averages, the ORs of HBP were 1.04 (95%CI: 0.94, 1.15) in rural regions and 0.85 (95%CI: 0.79, 0.93) in urban regions (P = 0.003). Along with the decrease in NLI levels, there were continuously decreasing inverse associations of NDVI with DM prevalence (P for interaction <0.001). In addition, weaker inverse associations of residential NDVI with HBP and DM prevalence were found among individuals with lower income and lower education levels compared to their counterparts.
    CONCLUSIONS: Lower regional urbanicity and individual SES could attenuate the associations of residential greenness with odds of HBP and DM prevalence.
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  • 文章类型: Journal Article
    公平有效地规划城市公园绿地是促进城市绿色健康发展、提高市民生活质量的重要途径。然而,在快速城市化的背景下,线性大城市,以其独特的空间形态和高密度的人口聚集,给城市公共绿地的规划和管理带来了特殊的挑战。本研究以兰州,中国高密度线性大城市的典型代表,作为一个案例研究。在改进传统高斯两步浮动集水面积法(G2SFCA)的基础上,结合基尼系数和洛伦兹曲线,在城市和地区尺度上评价了兰州中心城区UPGS供需的社会公平性和空间公平性。同时,UPGS供需短缺的区域被准确地确定为未来优化的关键区域。结果表明:(1)线性大兰州UPGS供需公平性在社会和空间层面存在显著差异,大多数UPGS资源为少数人所享有;(2)UPGS的空间可达性具有明显的“串珠”分布特征,可达性较高的地区主要集中在河流沿线;(3)UPGS供需公平性表现出空间梯度效应,其特征是圆形分布。从里到外,它如下:良好的供应密集的人口,良好的供应-人口稀疏,供应短缺-人口密集,供应短缺-人口稀少。最后,基于“渐进式微再生”的概念和位置分配模型(LA),确定了新UPGS的最佳站点,UPGS供需公平最大化。这为相关管理部门今后优化园区布局提供了实践参考。
    Equitable and effective planning of urban park green spaces (UPGSs) is an important way to promote green and healthy urban development and improve citizens\' quality of life. However, under the background of rapid urbanization, linear large cities, with their unique spatial forms and high-density population agglomerations, have brought special challenges for the planning and management of urban public green spaces. This study takes Lanzhou, a typical representative of high-density linear large cities in China, as a case study. Based on the improvement of the traditional Gaussian Two-Step Floating Catchment Area method (G2SFCA), combined with the Gini coefficient and the Lorentz curve, the social equity and spatial equity of UPGS supply-demand in the central urban area of Lanzhou were evaluated at the city and district scales. Meanwhile, the areas with shortage of UPGS supply-demand were accurately identified as the key areas for future optimization. The results show that: (1) There are significant differences in the equity of UPGS supply-demand in the linear large Lanzhou at the social and spatial levels, and most UPGS resources are enjoyed by a few people; (2) The spatial accessibility of UPGSs has an obvious \"string of beads\" distribution Characteristics, and the areas with high accessibility are mainly concentrated along rivers; (3) The equity of UPGS supply-demand exhibits a spatial gradient effect, which is characterized by a circle distribution. From the inside to the outside, it is as follows: good supply-dense population, good supply-sparse population, supply shortage-dense population, supply shortage-sparse population. Finally, based on the concept of \"progressive micro-regeneration\" and the Location Allocation model (LA), the optimal sites for new UPGSs were determined, maximizing the equity of UPGS supply-demand. This provides a practical reference for relevant management departments to optimize park layouts in the future.
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  • 文章类型: Journal Article
    监测自工业革命以来随着人口快速增长和城市化而发生的土地利用/土地覆盖(LU/LC)变化对于景观格局的最佳配置和确保生态功能的可持续性至关重要。利用高分辨率土地利用数据进行LU/LC变化的时空动态格局是通过景观格局指数分析评价景观生态风险的指标。在这项研究中,利用1992年至2022年图尔基耶GedizMainstream次流域的LandsatTM(ThematicMapper)和OLI(OperationalLandImager)遥感图像,计算了基于LU/LC变化的景观生态风险指数(LERi),并通过空间统计分析确定了LERi值的空间分布规律.根据结果,确定研究区域的LERi值在30年内变化了45%.变化最大的是高风险类别,增长10.96%,最低的变化发生在极低风险的类别中,下降1.29%。根据得到的统计分析结果,确定了在不同谷物水平下分析的全球空间自相关值在两年中均显示出正的自相关,并且LERi值倾向于具有很强的空间聚类。因此,强调对位于研究区东南线和西南偏北线的高-高(HH)自相关类型区域,应采取严格的控制措施,这些地区应优先考虑生态恢复应用。
    Monitoring the land use/land cover (LU/LC) changes that have occurred with rapid population growth and urbanization since the Industrial Revolution is important for the optimal configuration of landscape patterns and ensuring the sustainability of ecological functions. Spatiotemporal dynamic pattern of LU/LC change using high-resolution land use data is an indicator to evaluate the landscape ecological risk through landscape pattern index analysis. In this study, the landscape ecological risk index (LERi) based on LU/LC change was calculated using remote sensing images of Landsat TM (Thematic Mapper) and OLI (Operational Land Imager) Rdata of a Gediz Mainstream Sub-basin in Turkiye between 1992 and 2022, and the spatial distribution regularity of LERi values was determined with spatial statistical analysis. According to the results, it was determined that the LERi values of the study area changed by 45% in 30 years. The highest change is in the very high-risk class, with an increase of 10.96%, and the least change occurred in the very low-risk class, with a decrease of 1.29%. According to the obtained statistical analysis results, it was determined that the global spatial autocorrelation values analyzed at different grain levels showed positive autocorrelation for both years and that the LERi values tended to have strong spatial clustering. As a result, it is emphasized that strict control measures should be taken for areas showing High-High (HH) autocorrelation type located in the southeast and north-southwest line of the study area at the local level, and ecological restoration applications should be given priority in these areas.
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  • 文章类型: Journal Article
    空气污染是当今社会中最大的问题之一。室内外空气污染物的强度和城市化率可以引起或引发许多不同的疾病,尤其是肺癌.在这种情况下,这项研究的目的是揭示室内和室外空气污染物的影响,和城市化率对肺癌病例的影响。
    本研究采用面板数据分析方法。该研究包括1990年至2019年之间的时间序列,变量的数据类型为年度。研究模型中的因变量是每10万人的肺癌病例。独立变量是室外空气污染水平,空气污染程度室内环境与各国城市化率。
    在为发达国家集团开发的模型中,可以看出,对肺癌影响最高的变量是室外空气污染水平。
    在国家发展的同时,已经确定工业生产废物的增加,换句话说,空气质量恶化,可能会导致肺癌病例的增加。室内空气质量对人体健康也至关重要;这一变量的负面变化可能会对个人健康产生负面影响。尤其是肺癌.
    UNASSIGNED: Air pollution is one of the biggest problems in societies today. The intensity of indoor and outdoor air pollutants and the urbanization rate can cause or trigger many different diseases, especially lung cancer. In this context, this study\'s aim is to reveal the effects of the indoor and outdoor air pollutants, and urbanization rate on the lung cancer cases.
    UNASSIGNED: Panel data analysis method is applied in this study. The research includes the period between 1990 and 2019 as a time series and the data type of the variables is annual. The dependent variable in the research model is lung cancer cases per 100,000 people. The independent variables are the level of outdoor air pollution, air pollution level indoor environment and urbanization rate of countries.
    UNASSIGNED: In the modeling developed for the developed country group, it is seen that the variable with the highest level of effect on lung cancer is the outdoor air pollution level.
    UNASSIGNED: In parallel with the development of countries, it has been determined that the increase in industrial production wastes, in other words, worsening the air quality, may potentially cause an increase in lung cancer cases. Indoor air quality is also essential for human health; negative changes in this variable may negatively impact individuals\' health, especially lung cancer.
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  • 文章类型: Journal Article
    粘菌菌沿城乡梯度的分布仍有待详细研究。古代植物水杉主要种植在日本的城市公园和绿地,它为其生长的树皮上的粘菌提供了新的栖息地。这里,我们沿着城市化梯度检查了树皮上的粘液菌,按土地利用覆盖类型估算。在日本西部的20个地点选择了调查地点,从每个地点的10棵树上取样树皮。使用湿室技术将树皮样品培养在每棵树10个培养皿中。71%的培养物中出现了粘菌子菌落,通过调查确定了44种。所有部位均有双皮病,下一个最丰富的物种是Liceavariabilis和Perichaena。使用非度量多维缩放进行的22个粘菌群落与建筑物覆盖率和树皮pH值显着负相关,沿第一轴增加。石竹和紫菜的相对丰度与建筑物覆盖率的增加呈正相关。总的来说,城市化导致粘菌群落结构的交替,而没有多样性的丧失,和中间城市化使M.glyptostroboides树皮上的物种多样性多样化。
    Myxomycete distribution along urban-rural gradients remains to be studied in detail. The ancient plant Metasequoia glyptostroboides has been mainly planted in urban parks and green areas in Japan, and it provides new habitats for myxomycetes on its growing tree bark. Here, we examined myxomycetes on bark along urbanization gradients, estimated by land-use coverage types. Survey sites were selected at 20 locations in western Japan, where the bark was sampled from 10 trees at each site. The bark samples were cultured in 10 Petri dishes per tree using the moist chamber technique. Myxomycete fruiting colonies occurred in 71% of cultures, and 44 species were identified across surveys. Diderma chondrioderma occurred at all sites, with the next most abundant species being Licea variabilis and Perichaena vermicularis. Twenty-two myxomycete communities ordinated using non-metric multidimensional scaling showed a significant negative correlation with building coverage and bark pH, increasing along the first axis. Relative abundances of Physarum crateriforme and Licea biforis positively correlated with increasing building coverage. Overall, urbanization causes alternation of the myxomycete community structure without diversity loss, and intermediate urbanization diversified species diversity on M. glyptostroboides tree bark.
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