Linear regression models are commonly used for estimating ground PM2.5 concentrations, but the global spatial autocorrelation and local heterogeneity of distribution either ignored or only partially considered in concentrations. Therefore, taking both into consideration, a global-local (GLR) model is proposed concentrations Yangtze River Delta (YRD) Beijing, Tianjin, Hebei (BTH) regions China b...

Abstract. Using European Centre for Medium-Range Weather Forecasts fifth-generation (ERA5) and second Modern-Era Retrospective analysis Research Applications (MERRA-2) reanalysis surface meteorological observation data, this study explores the possible impact of sudden stratospheric warming (SSW) events on air quality in Beijing–Tianjin–Hebei (BTH) region. Major SSW are divided into polar vorte...

China's air pollution policies prioritize city heterogeneity, and launch the one-city-one-policy framework. Production fragmentation extends beyond local scale. Therefore, needs to be controlled in coordination between cities rather than individually, considering embodied supply chains. We illustrate NOx chains its transfer patterns highly polluted Beijing-Tianjin-Hebei (BTH) urban agglomeratio...

Against the background of coordinated development Beijing–Tianjin–Hebei region (BTH), it is great significance to quantitatively reveal spatiotemporal dynamics urban expansion for optimizing layout land across regions. However, characteristics, types and trends, spatial coevolution (including land, GDP, population) have not been well investigated in existing research studies. This study present...

The continuous growth of urban agglomerations in China has increased their complexity as well vulnerability. In this context, resilience is critical for the healthy and sustainable development agglomerations. Focusing on Beijing-Tianjin-Hebei (BTH) agglomeration, study constructs an evaluation system based four subsystems: economy, society, infrastructure, ecology. It uses entropy method to mea...

The severity of high atmospheric pollution has been a major social problem in northern China. To improve the air quality Beijing–Tianjin–Hebei (BTH) region and guarantee suitable environment during military parade other celebrating activities for 70th anniversary victory anti-Fascist Warcraft year 2015, series strict control policies were carried out. analyze reduction extents PM2.5 organic mat...

The selective behavior of local governments during regional environmental cooperation could generate a diffusion effect through the black box reputation mechanism. This study incorporates mechanism, social capital, and governance performance into unified analysis framework, empirically testing moderating implementation rate cooperative projects (indicating reputation) on relationship between tw...

The ozone weekend effect (OWE) was first investigated in the metropolitan area of Beijing–Tianjin–Hebei (BTH), China, using in situ measurements from the Atmospheric Environment Monitoring Network from July 2009 to August 2011. The results indicate that there is an obvious weekly periodical variation in the surface ozone concentration. There is a lower ozone concentration from Wednesday to Frid...

Feeding by insect herbivores activates plant signaling pathways, resulting in the enhanced production of secondary metabolites and other resistance-related traits by injured plants. These traits can reduce insect fitness, deter feeding, and attract beneficial insects. Organic and inorganic chemicals applied as a foliar spray, seed treatment, or soil drench can activate these plant responses. Az...