Based on the monitoring data of PM_(2.5) concentration in Bengbu Environmental Monitoring Station and precipitation observation data of Bengbu National Meteorological Observation Station from 2016 to 2019, the influen...Based on the monitoring data of PM_(2.5) concentration in Bengbu Environmental Monitoring Station and precipitation observation data of Bengbu National Meteorological Observation Station from 2016 to 2019, the influence of precipitation on PM_(2.5) mass concentration in Bengbu City was analyzed. The results show that precipitation had a washing and removal effect on PM_(2.5) in the air, and the removal effect was related to precipitation level, precipitation intensity, precipitation duration and PM_(2.5) concentration. The removal effect of precipitation on PM_(2.5) increased with the increase of precipitation level, and the seasonal difference was obvious. Precipitation intensity was positively correlated with the removal effect of PM_(2.5) , but the average removal rate began to decline when precipitation intensity exceeded 10 mm. With the increase of precipitation intensity, the proportion of positive removal showed an overall upward trend, but there was a low-value area as precipitation intensity was 3-10 mm. Precipitation duration was also positively correlated with the removal effect of PM_(2.5) , and there was a low-value area when precipitation duration was 10-15 h. When PM_(2.5) concentration was low before the precipitation process began, the removal effect was not good, and the average removal rate was negative. As PM_(2.5) concentration was high before the precipitation process started, the removal effect was obvious.展开更多
1 Introduction The early formation and evolution of the North China craton has been widely concerned by scientists.The Bengbu uplift belt is located in the southeast of the craton,theresearch degree of the belt is rel...1 Introduction The early formation and evolution of the North China craton has been widely concerned by scientists.The Bengbu uplift belt is located in the southeast of the craton,theresearch degree of the belt is relatively low and received increasing attention from many scholars in recent years.Through the author’s practical work and combined with展开更多
Based on the data of six automatic air monitoring stations in Bengbu City,the pollution characteristics and temporal distribution of fine particulate matter PM 2.5 in the air in Bengbu City from 2015 to 2019 were stud...Based on the data of six automatic air monitoring stations in Bengbu City,the pollution characteristics and temporal distribution of fine particulate matter PM 2.5 in the air in Bengbu City from 2015 to 2019 were studied,and the correlation between meteorological factors and PM 2.5 concentration was analyzed.The results showed that from 2015 to 2019,PM 2.5 pollution in Bengbu City was relatively heavy in winter and spring and relatively light in summer and autumn,and PM 2.5 concentration had two peaks during the day and night.Precipitation,relative humidity,wind direction and wind speed had certain effects on PM 2.5 concentration in Bengbu City.The research provides reference for the monitoring,early warning and prevention of PM 2.5 pollution in the city.展开更多
On the basis of performance and problems in land consolidation of Bengbu City,it is believed that land consolidation should focus on benefits of agriculture,farmers and countryside,strengthen consolidation of agricult...On the basis of performance and problems in land consolidation of Bengbu City,it is believed that land consolidation should focus on benefits of agriculture,farmers and countryside,strengthen consolidation of agricultural land and infrastructure construction.展开更多
The Jiangshan gold deposit is the largest,most recently-discovered gold deposit in the Bengbu Uplift.The ore bodies are located in the structural fracture zone of the Zhuangzili Formation(Ar3),with major Pb-Zn and Au ...The Jiangshan gold deposit is the largest,most recently-discovered gold deposit in the Bengbu Uplift.The ore bodies are located in the structural fracture zone of the Zhuangzili Formation(Ar3),with major Pb-Zn and Au reserves.In this study,LA-ICP-MS zircon U-Pb analyses yielded a crystallization age of 111.5±1.8 Ma for the quartz diorite porphyry in Jiangshan.The quartz diorite porphyry has high Ba and Sr content,with low Y and Yb content,which is similar to the characteristics of adakitic rocks.They are enriched in large ion lithophile elements(LILEs,e.g.,Ba,U)and light rare ear th elements(LREEs),while depleted in high field strength elements(HFSEs,e.g.,Nb,Ti)and heavy rare earth element(HREEs).They have zirconεHf(t)values of-23.52 to-21.14(mean=-22.32).and Hf model ages of 2419.76 to 2569.39 Ma.The magma source area is the lower crust.Magma primarily came from the partial melting of the lower crust,with the addition of some mantle material.The quartz diorite porphyries are characterized by high zircon TTi-in-zircon values(608-757°C),Ce^4+/Ce^3+ratios(71.97-1387.10)and Eu/Eu*ratios(0.46-1.08),indicating high temperature and magmatic oxygen fugacities.High temperatures can provide heat to fluids and highly oxidized magmas can control the behavior and speciation of sulfides,thus controlling the behavior of Au.Finally,the ore-forming fluid is enriched and precipitated in a favorable structural space to form the Jiangshan Au deposit.展开更多
Among cancers, lung cancer is the most common cause of death in China. For the prevention and control of lung cancer, it is necessary to investigate the spatial and temporal distribution of lung cancer mortality, as w...Among cancers, lung cancer is the most common cause of death in China. For the prevention and control of lung cancer, it is necessary to investigate the spatial and temporal distribution of lung cancer mortality, as well as the changes in the trend and the affecting mechanism. Based on statistics and auto-correlation analysis, this paper studied the spatial and temporal distribution of lung cancer mortality in Yuhui District, Bengbu, Huaihe River Basin, from 2017 to 2020. In addition, Spearman’s Rank Correlation Assessment Model and Geographic Detector Model were used to examine the relationship between environmental factors and lung cancer mortality to identify impact factors and their mechanisms. The findings indicated that: 1) from the characteristics of temporal distribution, the number of lung cancer deaths exhibited a linear growth tendency, with the highest mortality in winter;2) from the characteristics of spatial distribution, lung cancer mortality showed a strong spatial agglomeration form, concentrating on two clustering areas, located in the old city and the central city of Bengbu, near the Huaihe River;3) from the point of view of the whole research area, there were 15 impact factors with significant correlation in the built and natural environment factors. The significant impacting factors in the built environment included land use, road traffic, spatial form and blue-green space, which could indirectly affect lung cancer mortality, while air pollution and temperature constituted the significant impacting factors in the natural environment;4) the influence of screened environmental factors on lung cancer mortality was different. Spatial stratified heterogeneity assessment, the interaction among environmental factors demonstrated statistical significance, it was found that the interaction between environmental factors in pairs had a significant enhancement effect on lung cancer mortality. To some extent, urban planning and policies could reduce lung cancer mortality.展开更多
Based on the ozone monitoring data from the Bengbu Environmental Monitoring Station and the meteorological observation data from the Bengbu Ground Meteorological Observation Station from 2015 to 2019,the changing tren...Based on the ozone monitoring data from the Bengbu Environmental Monitoring Station and the meteorological observation data from the Bengbu Ground Meteorological Observation Station from 2015 to 2019,the changing trend of ozone concentration and the effects of meteorological conditions on ozone concentration in Bengbu in recent years were analyzed.The results show that from 2015 to 2019,the monthly and daily changing curves of ozone concentration in Bengbu City had double peaks and a single peak respectively.The peak of monthly average ozone concentration appeared from April to June and in September.The peak of daily average ozone concentration occurred around 16:00,while the valley apppeared around 07:00.Among the main meteorological factors affecting ozone concentration,ozone concentration was significantly positively correlated with temperature and sunshine hours and significantly negatively correlated with relative humidity,air pressure,total cloud cover,and wind speed.展开更多
文摘Based on the monitoring data of PM_(2.5) concentration in Bengbu Environmental Monitoring Station and precipitation observation data of Bengbu National Meteorological Observation Station from 2016 to 2019, the influence of precipitation on PM_(2.5) mass concentration in Bengbu City was analyzed. The results show that precipitation had a washing and removal effect on PM_(2.5) in the air, and the removal effect was related to precipitation level, precipitation intensity, precipitation duration and PM_(2.5) concentration. The removal effect of precipitation on PM_(2.5) increased with the increase of precipitation level, and the seasonal difference was obvious. Precipitation intensity was positively correlated with the removal effect of PM_(2.5) , but the average removal rate began to decline when precipitation intensity exceeded 10 mm. With the increase of precipitation intensity, the proportion of positive removal showed an overall upward trend, but there was a low-value area as precipitation intensity was 3-10 mm. Precipitation duration was also positively correlated with the removal effect of PM_(2.5) , and there was a low-value area when precipitation duration was 10-15 h. When PM_(2.5) concentration was low before the precipitation process began, the removal effect was not good, and the average removal rate was negative. As PM_(2.5) concentration was high before the precipitation process started, the removal effect was obvious.
基金the project "A study on gold mineralization and prospecting direction in east Anhui province" (item code: 2014-K-5)
文摘1 Introduction The early formation and evolution of the North China craton has been widely concerned by scientists.The Bengbu uplift belt is located in the southeast of the craton,theresearch degree of the belt is relatively low and received increasing attention from many scholars in recent years.Through the author’s practical work and combined with
文摘Based on the data of six automatic air monitoring stations in Bengbu City,the pollution characteristics and temporal distribution of fine particulate matter PM 2.5 in the air in Bengbu City from 2015 to 2019 were studied,and the correlation between meteorological factors and PM 2.5 concentration was analyzed.The results showed that from 2015 to 2019,PM 2.5 pollution in Bengbu City was relatively heavy in winter and spring and relatively light in summer and autumn,and PM 2.5 concentration had two peaks during the day and night.Precipitation,relative humidity,wind direction and wind speed had certain effects on PM 2.5 concentration in Bengbu City.The research provides reference for the monitoring,early warning and prevention of PM 2.5 pollution in the city.
文摘On the basis of performance and problems in land consolidation of Bengbu City,it is believed that land consolidation should focus on benefits of agriculture,farmers and countryside,strengthen consolidation of agricultural land and infrastructure construction.
基金grant-funded by the National Key R&D Program of China(2016YFC0600404)the Key R&D Program of Anhui Province(201904a07020077)the Natural Science Foundation of China(41673040)。
文摘The Jiangshan gold deposit is the largest,most recently-discovered gold deposit in the Bengbu Uplift.The ore bodies are located in the structural fracture zone of the Zhuangzili Formation(Ar3),with major Pb-Zn and Au reserves.In this study,LA-ICP-MS zircon U-Pb analyses yielded a crystallization age of 111.5±1.8 Ma for the quartz diorite porphyry in Jiangshan.The quartz diorite porphyry has high Ba and Sr content,with low Y and Yb content,which is similar to the characteristics of adakitic rocks.They are enriched in large ion lithophile elements(LILEs,e.g.,Ba,U)and light rare ear th elements(LREEs),while depleted in high field strength elements(HFSEs,e.g.,Nb,Ti)and heavy rare earth element(HREEs).They have zirconεHf(t)values of-23.52 to-21.14(mean=-22.32).and Hf model ages of 2419.76 to 2569.39 Ma.The magma source area is the lower crust.Magma primarily came from the partial melting of the lower crust,with the addition of some mantle material.The quartz diorite porphyries are characterized by high zircon TTi-in-zircon values(608-757°C),Ce^4+/Ce^3+ratios(71.97-1387.10)and Eu/Eu*ratios(0.46-1.08),indicating high temperature and magmatic oxygen fugacities.High temperatures can provide heat to fluids and highly oxidized magmas can control the behavior and speciation of sulfides,thus controlling the behavior of Au.Finally,the ore-forming fluid is enriched and precipitated in a favorable structural space to form the Jiangshan Au deposit.
基金Under the auspices of Natural Science Foundation of Anhui Province (No. 2008085ME160)Provincial Natural Science Research Projects in Anhui Province-Postgraduate Projects (No. YJS20210500)。
文摘Among cancers, lung cancer is the most common cause of death in China. For the prevention and control of lung cancer, it is necessary to investigate the spatial and temporal distribution of lung cancer mortality, as well as the changes in the trend and the affecting mechanism. Based on statistics and auto-correlation analysis, this paper studied the spatial and temporal distribution of lung cancer mortality in Yuhui District, Bengbu, Huaihe River Basin, from 2017 to 2020. In addition, Spearman’s Rank Correlation Assessment Model and Geographic Detector Model were used to examine the relationship between environmental factors and lung cancer mortality to identify impact factors and their mechanisms. The findings indicated that: 1) from the characteristics of temporal distribution, the number of lung cancer deaths exhibited a linear growth tendency, with the highest mortality in winter;2) from the characteristics of spatial distribution, lung cancer mortality showed a strong spatial agglomeration form, concentrating on two clustering areas, located in the old city and the central city of Bengbu, near the Huaihe River;3) from the point of view of the whole research area, there were 15 impact factors with significant correlation in the built and natural environment factors. The significant impacting factors in the built environment included land use, road traffic, spatial form and blue-green space, which could indirectly affect lung cancer mortality, while air pollution and temperature constituted the significant impacting factors in the natural environment;4) the influence of screened environmental factors on lung cancer mortality was different. Spatial stratified heterogeneity assessment, the interaction among environmental factors demonstrated statistical significance, it was found that the interaction between environmental factors in pairs had a significant enhancement effect on lung cancer mortality. To some extent, urban planning and policies could reduce lung cancer mortality.
文摘Based on the ozone monitoring data from the Bengbu Environmental Monitoring Station and the meteorological observation data from the Bengbu Ground Meteorological Observation Station from 2015 to 2019,the changing trend of ozone concentration and the effects of meteorological conditions on ozone concentration in Bengbu in recent years were analyzed.The results show that from 2015 to 2019,the monthly and daily changing curves of ozone concentration in Bengbu City had double peaks and a single peak respectively.The peak of monthly average ozone concentration appeared from April to June and in September.The peak of daily average ozone concentration occurred around 16:00,while the valley apppeared around 07:00.Among the main meteorological factors affecting ozone concentration,ozone concentration was significantly positively correlated with temperature and sunshine hours and significantly negatively correlated with relative humidity,air pressure,total cloud cover,and wind speed.
