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| 1 | Influence of different weather events on concentrations of particulate matter with different sizes in Lanzhou,China显示文摘The formation and development of weather events has a great impact on the diffusion,accumulation and transport of air pollutants,and causes great changes in the particulate pollution level.It is very important to study their influence on particulate pollution.Lanzhou is one of the most particulate-polluted cities in China and even in the world.Particulate matter(PM) including TSP,PM >10,PM 2.5 10,PM 2.5 and PM 1.0 concentrations were simultaneously measured during 2005-2007 in Lanzhou to evaluate the influence of three kinds of weather events-dust,precipitation and cold front-on the concentrations of PM with different sizes and detect the temporal evolution.The main results are as follows:(1) the PM pollution in Lanzhou during dust events was very heavy and the rate of increase in the concentration of PM 2.5 10 was the highest of the five kinds of particles.During dust-storm events,the highest peaks of the concentrations of fine particles(PM 2.5 and PM 1.0) occurred 3 hr later than those of coarse particles(PM >10 and PM 2.5 10).(2) The major effect of precipitation events on PM is wet scavenging.The scavenging rates of particles were closely associated with the kinds of precipitation events.The scavenging rates of TSP,PM >10 and PM 2.5 10 by convective precipitation were several times as high as those caused by frontal precipitation for the same precipitation amount,the reason being the different formation mechanism and precipitation characteristics of the two kinds of precipitation.Moreover,there exists a limiting value for the scavenging rates of particles by precipitation.(3) The major effect of cold-front events on particles is clearance.However,during cold-front passages,the PM concentrations could sometimes rise first and decrease afterwards,which is the critical difference in the influence of cold fronts on the concentrations of particulate pollutants vs.gaseous pollutants. | Xinyuan Feng Shigong Wang | 2012 | Journal of Environmental Sciences2012，24，4： | 18 |
| 2 | Online monitoring of water-soluble ionic composition of PM_(10)during early summer over Lanzhou City显示文摘Lanzhou is one of the most aerosol-polluted cities in China. In this study, an online analyzer for Monitoring for AeRosols and GAses was deployed to measure major water-soluble inorganic ions in PM10 at 1-hour time resolution, and 923 samples were obtained from Apr 1 to May 24, 2011. During the field campaign, air pollution days were encountered with Air Quality Index more than 100 and daily average concentration of PM10 exceeding 150 μg/m3. Based on the variation of water-soluble ions and results of Positive Matrix Factorization 3.0 model execution, the air pollution days were classified as crustal species- or secondary aerosol-induced, and the different formation mechanisms of these two air pollution types were studied. During the crustal species pollution days, the content of Ca2+increased and was about 2.3 times higher than the average on clear days, and the air parcel back trajectory was used to analyze the sources of crustal species. Data on sulfate, trace gases and meteorological factors were used to reveal the formation mechanism of secondary aerosol pollution. The sulfur oxidation ratio(SOR) was derived from the 923 samples, and the SOR had high positive correlation with relative humidity in early summer in Lanzhou. | Jin Fan Xiaoying Yue Yi Jing Qiang Chen Shigong Wang | 2014 | Journal of Environmental Sciences2014，26，2： | 8 |
| 3 | Characteristics of air pollution events over Hotan Prefecture at the southwestern edge of Taklimakan Desert, China显示文摘Hotan Prefecture is located at the southwestern edge of Taklimakan Desert, the world's largest shifting sand desert, of China. The desert is one of the main sources for frequent sand-dust weather events which strongly affect the air quality of Hotan Prefecture. Although this region is characterized by the highest annual mean PM_(10) concentration values that are routinely recorded by environmental monitoring stations across China, both this phenomenon and its underlying causes have not been adequately addressed in previous researches. Reliable pollutant PM_(10) data are currently retrieved using a tapered element oscillating microbalance(TEOM) 1400 a, a direct real-time monitor, while additional concentration values including for PM_(2.5), sulfur dioxide(SO_2), nitrogen dioxide(NO_2), carbon monoxide(CO) and ozone(O_3) have been collected in recent years by the Hotan Environmental Monitoring Station. Based on these data, this paper presents a comparison of the influences of different kinds of sand-dust weather events on PM10(or PM_(2.5)) as well as the concentrations of other gaseous pollutants in Hotan Prefecture. It is revealed that the highest monthly average PM10 concentrations are observed in the spring because of the frequent occurrence of three distinct kinds of sand-dust weather events at this time, including dust storms, blowing dust and floating dust. The floating dust makes the most significant contribution to PM_(10)(or PM_(2.5)) concentration in this region, a result that differs from eastern Chinese cities where the heaviest PM_(10) pollution occurs usually in winter and air pollution results from the excess emission of local anthropogenic pollutants. It is also shown that PM_(10) concentration varies within typical dust storms. PM_(10) concentrations vary among 20 dust storm events within Hotan Prefecture, and the hourly mean concentrations tend to sharply increase initially then slowly decreasing over time. Data collected from cities in eastern China show the opposite with the hourly mean PM_(10)(or PM_(2.5)) concentration tending to slowly increase then sharply decrease during heavy air pollution due to the excess emission of local anthropogenic pollutants. It is also found that the concentration of gaseous pollutants during sand-dust weather events tends to be lower than those cases under clear sky conditions. This indicates that these dust events effectively remove and rapidly diffuse gaseous pollutants. The analysis also shows that the concentration of SO_2 decreases gradually at the onset of all three kinds of sand-dust weather events because of rapidly increasing wind velocity and the development of favorable atmospheric conditions for diffusion. In contrast, changes in O_3 and NO_2 concentrations conformed to the opposite pattern during all three kinds of sand-dust weather events within this region, implying the inter transformation of these gas species during these events. | LI Jingxin WANG Shigong CHU Jinhua WANG Jiaxin LI Xu YUE Man SHANG Kezheng | 2018 | Journal of Arid Land2018，10，5： | 5 |
| 4 | Precipitation changes in the mid-latitudes of the Chinese mainland during 1960–2014显示文摘Based on daily precipitation data from 163 meteorological stations, this study investigated precipitation changes in the mid-latitudes of the Chinese mainland(MCM) during 1960–2014 using the climatic trend coefficient, least-squared regression analysis, and a non-parametric Mann-Kendall test.According to the effects of the East Asian summer monsoon on the MCM and the climatic trend coefficient of annual precipitation during 1960–2014, we divided the MCM into the western MCM and eastern MCM. The western MCM was further divided into the western MCM1 and western MCM2 in terms of the effects of the East Asian summer monsoon. The main results were as follows:(1) During the last four decades of the 20^(th) century, the area-averaged annual precipitation presented a significant increasing trend in the western MCM, but there was a slight decreasing trend in the eastern MCM, where a seesaw pattern was apparent. However, in the 21^(st) century, the area-averaged annual precipitation displayed a significant increasing trend in both the western and eastern MCM.(2) The trend in area-averaged seasonal precipitation during 1960–2014 in the western MCM was consistent with that in the eastern MCM in winter and spring. However, the trend in area-averaged summer precipitation during1960–2014 displayed a seesaw pattern between the western and eastern MCM.(3) On an annual basis,both the trend in rainstorms and heavy rain displayed a seesaw pattern between the western and eastern MCM.(4) The precipitation intensity in rainstorms, heavy rain, and moderate rain made a greater contribution to changes in the total precipitation than precipitation frequency. The results of this study will improve our understanding of the trends and differences in precipitation changes in different areas of the MCM. This is not only useful for the management and mitigation of flood disasters, but is also beneficial to the protection of water resources across the MCM. | HU Yuling WANG Shigong SONG Xuping WANG Jiaxin | 2017 | Journal of Arid Land2017，9，6： | 4 |
| 5 | Optimal operation of cold–heat–electricity multi-energy collaborative system based on price demand response显示文摘In a multi-energy collaboration system, cooling, heating, electricity, and other energy components are coupled to complement each other. Through multi-energy coordination and cooperation, they can significantly improve their individual operating efficiency and overall economic benefits. Demand response, as a multi-energy supply and demand balance method, can further improve system flexibility and economy. Therefore, a multi-energy cooperative system optimization model has been proposed, which is driven by price-based demand response to determine the impact of power-demand response on the optimal operating mode of a multi-energy cooperative system. The main components of the multi-energy collaborative system have been analyzed. The multi-energy coupling characteristics have been identified based on the energy hub model. Using market elasticity as a basis, a price-based demand response model has been built. The model has been optimized to minimize daily operating cost of the multi-energy collaborative system. Using data from an actual situation, the model has been verified, and we have shown that the adoption of price-based demand response measures can significantly improve the economy of multi-energy collaborative systems. | Yuwei Cao Liying Wang Shigong Jiang Weihong Yang Ming Zeng Xiaopeng Guo | 2020 | Global Energy Interconnection2020，3，5： | 4 |
| 6 | Combined effects of elevated temperature and CO_2 concentration on Cd and Zn accumulation dynamics in Triticum aestivum L.显示文摘A simulated climate warming experiment was conducted to evaluate the combined effects of elevated temperature and CO_2 concentration on the bioaccumulation,translocation and subcellular distributions of Cd and Zn in wheat seedlings(Triticum aestivum L.cv.Xihan 1.) at Dingxi,Gansu Province,China.The objective was to find evidence that global climate change is affecting the bioaccumulation of Cd and Zn in T.aestivum L.cv.Xihan 1.The results showed that compared to control A,elevated temperature and CO_2 increased Cd bioaccumulation in the shoots by 1.4–2.5 times,and increased that in the roots by 1.2–1.5times,but decreased Zn levels in wheat shoots by 1.4–2.0 times,while decreased that in the roots by 1.6–1.9 times.Moreover,temperature and CO_2 concentration increase also led to increased Cd concentration,and decreased Zn concentration in subcellular compartments of wheat seedlings.The largest Cd concentration increase(174.4%) was observed in the cell wall and debris fractions of shoots after they were subjected to the highest CO_2 and temperature treatment(TC3).The largest Zn concentration decrease(53.1%) was observed in the soluble(F3) fractions of shoots after they were subjected to the medium CO_2 and temperature treatment(TC2).The temperature and CO_2 increase had no significant effect on the proportional distribution of Cd and Zn in the subcellular fractions.The root-to-shoot translocation of Cd increased with the increasing temperature and CO_2 concentration.However,the Zn distributions only fluctuated within a small range. | Xiaoheng Wang Yu Li Hong Lu Shigong Wang | 2016 | Journal of Environmental Sciences2016，28，9： | 4 |
| 7 | Chemical identification and genotoxicity analysis of petrochemical industrial wastewater显示文摘工业废水的实际有害效果不能被常规水质量索引反映。因此,在溶解有机物的变化和石油化学的废水的基因毒性被在西北中国检验一家大石油化学的企业的废水处理植物在当前的学习观察。用 XAD-8, MSC,和 DA-7 树脂,也就是,废水被分开成六部分恐水病的酸(HOA ) ,恐水病中立(壁炉内部的一锅架) ,恐水病的碱的、吸水的酸,吸水碱、吸水中立。Umu 测试被用来检测废水样品的基因毒性,并且荧光系列也被获得检验基因有毒的物质。结果证明废水处理设备能有效地在石油化学的废水减少有机物的集中(p < 0.05 ) 。然而,混合苯胺废水能增加器官的碳的数量(p < 0.05 ) 并且能过载设备。这发现证明混合收集和石油化学的废水的不同类型的联合处理能影响自河的水质量。特别地,恐水病的物质能是困难的搬迁并且说明自河的一个相对大的比例。苯胺废水的混合能增加自河的基因毒性(p < 0.05 ) ,并且生物学的处理不能有效地减少毒性。大多数基因毒物学可以在 HOA 和壁炉内部的一锅架部分存在。荧光光谱学也证实这结果,和像色氨酸的物质可以在基因毒性起一个重要作用。 | Jing ZHANG Shigong WANG Can WANG Hongying HU | 2012 | Frontiers of Environmental Science & Engineering2012，6，3： | 3 |
| 8 | The impacts of different kinds of dust events on PM 10 pollution in northern China显示文摘 | Shigong Wang Wei Yuan Kezheng Shang | 2006 | Atmospheric Environment2006，，40： | 2 |
| 9 | Temporal variations in aerosol composition at Lanzhou City, Northwestern China显示文摘Although Lanzhou is one of the most heavily polluted cities in China, the composition of its air pollutants have not yet been stud- ied in detail. The data of four months on the concentrations and compositions of ions from daily air-filter samples in the winter and spring during 2007-2008 were analyzed to investigate temporal trends and their possible causes. The results indicate that mean concentrations of almost all the aerosol components are greater in winter than in spring due to stronger emissions in winter and weaker localized dispersion. Spring dust storms are the major cause of the highest peak PM10 concentrations recorded during the study period; however, these elevated levels were transient. Ion concentrations related to coal combustion show the greatest reduc- tion from winter to spring, while the concentrations of strong crustal components show a less-pronounced reduction. Strong cycles in the levels of particulate matter (PM) and all ions are also observed during the winter months due to meteorological conditions. Depending on the season, nine different ions accounted for 20%-50% of the PM concentration. The particle size of polluting ions was constant at times of increasing PM concentrations (particularly during winter), whereas the particle size of crustal ions in- creased dramatically during spring dust storms. Local meteorological conditions (especially wind speed) have a strong influence on the levels of pollutants. Four dust storms were noted, including one during winter. In summary, the regional transport of desert dust from the Gobi can significantly affect air quality and the chemical composition of aerosols in Lanzhou. The dust storms can strongly increase concentration of crustal ions, which are characteristics of deserts in northwestern China. This observation is in agreement with back-trajectories, which show reduced levels of pollutant ions during dust storms. Data on nitrate:sulfate ratios in- dicate that stationary point sources are the main source of ions rather than mobile sources. | Feng She YiFan Cheng ShiGong Wang YongTao Guo JinYan Wang MinJing Ma KeZheng Shang | 2011 | Research in Cold and Arid Regions2011，3，3： | 2 |
| 10 | The impacts of different kinds of dust events on PM 10 pollution in northern China显示文摘 | Shigong Wang Wei Yuan Kezheng Shang | 2006 | Atmospheric Environment2006，，40： | 2 |
| 11 | Case study of dust event sources from the Gobi and Taklamakan deserts:An investigation of the horizontal evolution and topographical effect using numerical modeling and remote sensing显示文摘A severe dust event occurred from April 23 to April 27, 2014, in East Asia. A state-of-the-art online atmospheric chemistry model, WRF/Chem, was combined with a dust model, GOCART,to better understand the entire process of this event. The natural color images and aerosol optical depth(AOD) over the dust source region are derived from datasets of moderate resolution imaging spectroradiometer(MODIS) loaded on a NASA Aqua satellite to trace the dust variation and to verify the model results. Several meteorological conditions, such as pressure, temperature, wind vectors and relative humidity, are used to analyze meteorological dynamic. The results suggest that the dust emission occurred only on April 23 and 24,although this event lasted for 5 days. The Gobi Desert was the main source for this event,and the Taklamakan Desert played no important role. This study also suggested that the landform of the source region could remarkably interfere with a dust event. The Tarim Basin has a topographical effect as a 'dust reservoir' and can store unsettled dust, which can be released again as a second source, making a dust event longer and heavier. | Jin Fan Xiaoying Yue Qinghua Sun Shigong Wang | 2017 | Journal of Environmental Sciences2017，29，6： | 2 |
| 12 | The characteristics of grain size from the Kumtag Desert and its environmental significance显示文摘The Kumtag Desert is located in the arid northwestern portion of China,and is considered China's sixth-largest desert.Grain-size analysis of the sand plays a very important role in differentiating sedimentary environments,determining the ways that sediments are transported,estimating hydrodynamic conditions,and analyzing grain-size trends.The analysis of the grain size of 20 sand samples that were taken from mid-northern,north margin,western,middle,southern,and southeast margins of the Kumtag Desert shows that grain sizes are vastly different.The grain-size parameters fall in the following range:the median diameter Mz = 1.55Φ-2.92Φ,the standard deviation σI= 0.41-1.11,the skewness SKI = ?0.11-0.31,kurtosis KG = 0.77-1.23.The frequency curves of grain size have characteristics with single peaks and multi-peaks,and most of the sand samples' skewness appears close to asymmetric.The analytical results reveal that the sediments of the Kumtag Desert are complex and diverse,which affected by such forces as wind deposition,lacustrine sediment,and alluvial and proluvial river deposits. | Qing He 1*,XinHua Yang 1,2,Wen Huo 1,ShiGong Wang 3,KeZhen Shang 3,HongYi Liu 4 1.Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,Xinjiang,China.2.College of Geographical Science and Tourism,Xinjiang Normal University,Urumqi 830054,Xinjiang,China.3.School of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,China.4.Lanzhou Institute of Arid Meteorology,CMA,Lanzhou 730020,Gansu,China. | 2009 | Research in Cold and Arid Regions2009，1，2： | 2 |
| 13 | A study on variations of concentrations of particulate matter with different sizes in Lanzhou, China 显示文摘 | WANG Shigong FENG Xinyuan ZENG Xiaoqing | 2009 | Atmospheric Environ- ment2009，43，17： | 1 |
| 14 | Diagnostic Analysis on Heavy Rain Process of the Northeast-moving Southwest Vortex显示文摘The moving path of southwest vortex and the mechanism of heavy rain in the north were studied in order to find out the forecasting point of the northern heavy rain,so as to improve the forecasting ability of the heavy rain disastrous weather.A large-scale heavy rain process in northern China from 18 to 21 July 2010 was diagnostically analyzed using meteorological conventional and intensified observation data and NCEP 1°× 1° reanalysis data.The result showed that the southwest vortex moved northeastward under the guidance of southwest airflow in the periphery of subtropical high,which was the direct influence system of the heavy rainfall.The heavy rainfall occurred on the east side of the symmetrical axis of the 700 hPa low vortex.The southwest jet provided abundant water vapor and potential instability energy for the occurrence of heavy rainfall.The changes of vorticity advection and temperature advection in the lower and middle troposphere were the leading causes of affecting the development and movement of the low vortex.The low vortex moved along the positive vorticity advection increasing region and the warm advection increasing region.The dry and cold air intruded into the low vortex from the middle layer,which promoted the generation and development of the unstable stratification of upper cold and lower warm,and provided unstable and triggering conditions for heavy rain.The water vapor transport from the Yellow Sea and the Bohai Sea was very abundant,and the water vapor flux was very high,reaching 30 g/(s·cm·hPa).It was the main reason for the maximum precipitation in Liaoning Province,which was the farthest from the southwest vortex source.The study deepened the understanding of the structural characteristics of the southwest vortex and revealed the dynamic mechanism of the northeast movement and development of the southwest vortex as well as the cause of rainstorm induced by interaction with other weather systems.It can provide some forecasting ideas and useful references for forecasting the movement of the southwest vortex and the heavy rain weather in the north. | Rao Xiaoqin Wang Shigong | 2019 | Meteorological and Environmental Research2019，10，3： | 1 |
| 15 | An Objective Identification Technique for Regional Extreme Events显示文摘 | Ren Fumin Cui Donglin Gong Zhiqiang Wang Yanjiao Zou Xukai Li Yiping Wang Shigong Wang Xiaoling | 2012 | EN2012，，20： | 1 |
| 16 | Short-Term effects of gaseous pollutants and particulate matter on daily hospi- tal admissions for Cardio- Cerebrovascular disease in Lanzhou: Evidence from a heavily polluted city in China 显示文摘 | Shan Zheng Minzhen Wang Shigong Wang | 2013 | International Journal of Environmental Research and Public Health2013，10，2： | 1 |
| 17 | Regional characteristics of three kinds of dust storm events in China显示文摘 | Shigong Wang Jinyan Wang Zijiang Zhou Kezheng Shang | 2004 | Atmospheric Environment2004，，3： | 1 |
| 18 | A study on variations of concentrations of particulate matter with different sizes in Lanzhou, China显示文摘 | Shigong Wang Xinyuan Feng Xiaoqing Zeng Yuxia Ma Kezheng Shang | 2009 | Atmospheric Environment2009，，17： | 1 |
| 19 | Long-term characterization of major water-soluble : inorganic ions in PM10 in coastal site on the Japan Sea 显示文摘 | Guo Yongtao Zhong Jing Wang Shigong | 2011 | Journal of Atmospheric Chemistry2011，68，4： | 1 |
| 20 | Simulation of the long-term transfer and fate of DDT in Lanzhou, China显示文摘 | DONG Jiyuan WANG Shigong SHANG Kezheng | 2010 | Chemosphere2010，81，4： | 1 |
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