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| 1 | Influence of Atmospheric Particulate Matter on Ozone in Nanjing,China:Observational Study and Mechanistic Analysis显示文摘Particulate matter with diameters of 2.5 μm or smaller(PM_(2.5)) and ozone(O_3) are major pollutants in the urban atmosphere. PM_(2.5) can affect O_3 by altering the photolysis rate and heterogeneous reactions. However, these two processes and their relative importance remain uncertain. In this paper, with Nanjing in China as the target city, we investigate the characteristics and mechanism of interactions between particles and O_3 based on ground observations and numerical modeling.In 2008, the average concentrations of PM_(2.5) and O_3 at Caochangmen station are 64.6 ± 47.4 μg m^(-3) and 24.6 ± 22.8 ppb,respectively, while at Pukou station they are 94.1 ± 63.4 μg m^(-3) and 16.9 ± 14.9 ppb. The correlation coefficient between PM_(2.5) and O_3 is -0.46. In order to understand the reaction between PM_(2.5) and O_3, we construct a box model, in which an aerosol optical property model, ultraviolet radiation model, gas phase chemistry model, and heterogeneous chemistry model,are coupled. The model is employed to investigate the relative contribution of the aforementioned two processes, which vary under different particle concentrations, scattering capability and VOCs/NOxratios(VOCs: volatile organic compounds;NOx: nitric oxide and nitrogen dioxide). Generally, photolysis rate effect can cause a greater O_3 reduction when the particle concentrations are higher, while heterogeneous reactions dominate O_3 reduction with low-level particle concentrations.Moreover, in typical VOC-sensitive regions, O_3 can even be increased by heterogeneous reactions. In Nanjing, both processes lead to O_3 reduction, and photolysis rate effect is dominant. Our study underscores the importance of photolysis rate effect and heterogeneous reactions for O_3, and such interaction processes should be fully considered in future atmospheric chemistry modeling. | Yawei QU Tijian WANG Yanfeng CAI Shekou WANG Pulong CHEN Shu LI Mengmeng LI Cheng YUAN Jing WANG Shaocai XU | 2018 | Advances in Atmospheric Sciences2018，35，11： | 33 |
| 2 | Revisiting the seasonal wave height variability in the South China Sea with merged satellite altimetry observations显示文摘The seasonal variability of the significant wave height(SWH) in the South China Sea(SCS) is investigated using the most up-to-date gridded daily altimeter data for the period of September 2009 to August 2015. The results indicate that the SWH shows a uniform seasonal variation in the whole SCS, with its maxima occurring in December/January and minima in May. Throughout the year, the SWH in the SCS is the largest around Luzon Strait(LS) and then gradually decreases southward across the basin. The surface wind speed has a similar seasonal variation, but with different spatial distributions in most months of the year. Further analysis indicates that the observed SWH variations are dominated by swell. The wind sea height, however, is much smaller. It is the the largest in two regions southwest of Taiwan Island and southeast of Vietnam Coast during the northeasterly monsoon, while the largest in the central/southern SCS during the southwesterly monsoon. The extreme wave condition also experiences a significant seasonal variation. In most regions of the northern and central SCS, the maxima of the 99 th percentile SWH that are larger than the SWH theoretically calculated with the wind speed for the fully developed seas mainly appear in August–November, closely related to strong tropical cyclone activities.Compared with previous studies, it is also implied that the wave climate in the Pacific Ocean plays an important role in the wave climate variations in the SCS. | SU Hui WEI Chunlei JIANG Shaocai LI Peiliang ZHAI Fangguo | 2017 | Acta Oceanologica Sinica2017，36，11： | 4 |
| 3 | Effects of wave-current interaction on the waves, cold-water mass and transport of diluted water in the Beibu Gulf显示文摘Wave-current interaction and its effects on the hydrodynamic environment in the Beibu Gulf(BG) have been investigated via employing the Coupled Ocean–Atmosphere–Wave–Sediment Transport(COAWST) modeling system. The model could simulate reasonable hydrodynamics in the BG when validated by various observations.Vigorous tidal currents refract the waves efficiently and make the seas off the west coast of Hainan Island be the hot spot where currents modulate the significant wave height dramatically. During summer, wave-enhanced bottom stress could weaken the near-shore component of the gulf-scale cyclonic-circulation in the BG remarkably, inducing two major corresponding adjustments: Model results reveal that the deep-layer cold water from the southern BG makes critical contribution to maintaining the cold-water mass in the northern BG Basin.However, the weakened background circulation leads to less cold water transported from the southern gulf to the northern gulf, which finally triggers a 0.2℃ warming in the cold-water mass area;In the top areas of the BG, the suppressed background circulation reduces the transport of the diluted water to the central gulf. Therefore, more freshwater could be trapped locally, which then triggers lower sea surface salinity(SSS) in the near-field and higher SSS in the far-field. | Jingling Yang Shaocai Jiang Junshan Wu Lingling Xie Shuwen Zhang Peng Bai | 2020 | Acta Oceanologica Sinica2020，39，1： | 2 |
| 4 | Origin of air pollution during a weekly heavy haze episode in Hang- zhou, China ]显示文摘 | YU Shaocai ZHANG Qingyu YAN Renchang | 2014 | Environmental Chemistry Letters2014，12，4： | 1 |
| 5 | Short-term exposure to fine particulate matter constituents and mortality:case-crossover evidence from 32 counties in China显示文摘A growing number of studies associated increased mortality with exposures to specific fine particulate(PM_(2.5))constituents,while great heterogeneity exists between locations.In China,evidence linking PM_(2.5)constituents and mortality was extensively sparse.This study primarily aimed to quantify short-term associations between PM_(2.5)constituents and non-accidental mortality among the Chinese population.We collected daily mortality records from 32 counties in China between January 1,2011,and December 31,2013.Daily concentrations of main PM_(2.5)constituents(organic carbon(OC),elemental carbon(EC),nitrate(NO_(3)^(-)),sulfate(SO_(4)^(2−)),and ammonium(NH_(4)^(+)))were estimated using the modified Community Multiscale Air Quality model.Time-stratified case-crossover design with conditional logistic regression models was adopted to estimate mortality risks associated with short-term exposures to PM_(2.5)mass and its constituents.Stratification analyses were done by sex,age,and season.A total of 116,959 non-accidental deaths were investigated.PM_(2.5)concentrations on the day of death were averaged at 75.7μg m^(−3)(control day:75.6μg m^(−3)),with an interquartile range(IQR)of 65.2μg m^(−3).Per IQR rise in PM_(2.5),EC,OC,NO_(3)^(-),SO_(4)^(2−),and NH_(4)^(+)at lag-04 day was associated with an increase in non-accidental mortality of 2.4%(95%confidence interval,(1.0–3.7),1.7%(0.8–2.7),2.9%(1.6–4.3),2.1%(0.4–3.9),1.0%(0.2–1.9),and 1.6%(0.3–2.9),respectively.Both PM_(2.5)mass and its constituents were strongly associated with elevated cardiovascular mortality risks,but only PM_(2.5),EC,and OC were positively associated with respiratory mortality at lag-3 day.PM_(2.5)mass and its constituents associated effects on mortality varied among sex-and age-specific subpopulations.Differences in the seasonal pattern of associations exist among PM_(2.5)constituents,with stronger effects related to EC and NO_(3)^(-)in warm months but SO_(4)^(2−)and NH_(4)^(+)in cold months.Short-term exposures to PM_(2.5)compositions were positively associated with increased risks of mortality,particularly those constituents from combustion-related sources. | Peixuan Zhou Jianlin Hu Chuanhua Yu Junzhe Bao Siqi Luo Zhihao Shi Yang Yuan Shaocai Mo Zhouxin Yin Yunquan Zhang | 2022 | Science China(Life Sciences)2022，65，12： | 1 |
| 6 | Debris flow suscepti- bility assessment by GIS and information value model in a large-scale region, Sichuan Province (China) 显示文摘 | Xu Wenbo Yu Wenjuan Jing Shaocai | 2013 | Natural Hazards2013，65，： | 1 |
| 7 | Primary and secondary organic aerosols over the United States: estimates on the basis of observed organic carbon (OC) and elemental carbon (EC), and air quality modeled primary OC/EC ratios 显示文摘 | Shaocai Yu Robin L Dennisl Prakash V Bhavel | 2004 | Atmospheric Environment2004，38，： | 1 |
| 8 | Primary and secondary organic aerosols over the United States: estimates on the basis of observed organic carbon (OC) and elemental carbon (EC), and air quality modeled primary OC/EC ratios显示文摘 | Shaocai Yu Robin L. Dennis Prakash V. Bhave Brian K. Eder | 2004 | Atmospheric Environment2004，，31： | 1 |
| 9 | Origin of air pollution during a weekly heavy haze episode in Hangzhou, China 显示文摘 | YU Shaocai ZHANG Qingyu YAN Renghang | 2014 | Environmental Chemistry Letters2014，12，4： | 1 |
| 10 | Polyacryl- amide molecular formulation effects on erosion control of disturbed soil on steep rocky slopes显示文摘 | Yang Lixia Li Shaocai Sun Hailong | 2011 | Canadian Jour- nal of Soil Science2011，91，6： | 1 |
| 11 | A performance evaluation of the 2004 release of Models-3 CMAQ显示文摘 | Brian Eder Shaocai Yu | 2006 | Atmospheric Environment2006，，26： | 1 |
| 12 | Primary and Sencondary Organic Aerosols over the United States:Estimates on the Basis of Observed Orgnic Carbon and Element Carbon(EC), and Air Quality Modeled Primary OC/EC Ratios显示文摘 | Yu Shaocai Dennis Robin L Bhave Prakash V | 2004 | Atmospheric Enviroment2004，38，： | 1 |
| 13 | Polyacryl- amide molecular formulation effects on erosion control of disturbed soil on steep rocky slopes显示文摘 | Yang Lixia Li Shaocai Sun Hailong | 2011 | Canadian Jour- nal of Soil Science2011，91，6： | 1 |
| 14 | Primary and secondary organic aerosols over the United States:estimates on the basis of observed organic carbon (OC) and elemental carbon (EC),and air quality modeled primary OC/EC ratios 显示文摘 | YU Shaocai DENNIS L Robin BHAVE V Prakash | 2004 | Atmospheric Environ ment2004，38，31： | 1 |
| 15 | Primary andsecondary organic aerosols over the United States: estimateson the basis of observed organic carbon (OC) and elementalcarbon (EC),and air quality modeled primary OC/EC ratios显示文摘 | YU Shaocai DENNIS R L BHAVE P V | 2004 | Atmospheric Environment2004，38，31： | 1 |
| 16 | Fascinating Traditional Costumes of Tujia Ethnic Group显示文摘The Qingjiang River,stretching more than 400 kilometers through central Hubei Province,is known as the 'Mother River' of Tujia Ethnic Group. | Liu Shaocai | 2009 | China & The World Cultural Exchange2009，75，11： | 0 |
| 17 | Investigation and Evaluation of Ground Covers in Botanical Garden of Chengdu显示文摘After investigating species and application forms of ground covers in Botanical Garden of Chengdu, the application quality evaluation system was established from the perspective of ornamental, adaptive and applicable characteristics of ground covers, AHP and K-Means adopted to evaluate and grade major ground covers. The results showed that there are 93 ground cover species in Botanic Garden of Chengdu, belonging to 82 genera of 47 families. Major application means of the ground covers in the garden were introduced, covering fl ower bed, roadside, waterfront, under woods, lawn, rockery decoration. Application quality of the 38 major ground covers was evaluated comprehensively, and the qualifi cation rate achieved 97.39%, i.e. these plants are able to meet ecological, beautifying and social functions in the garden. | SONG Xiaomei XIAO Xi LI Shaocai | 2014 | Journal of Landscape Research2014，6，2： | 0 |
| 18 | Epidemiological and comparative genomic analyses of Multidrug- Resistant Acinetobacter baumannii collected between 2020 and 2022 in Liaocheng City, Shandong Province, China显示文摘The emergence and prevalence of multidrug-resistant Acinetobacter baumannii(MRAB)poses a huge challenge to clinical treatment.To investigate the genetic and epidemiologic characteristics of MRAB in Liaocheng,China,and to explore potential resistance mechanisms,56 MRAB strains were collected from the clinical departments of seven hospitals in Liaocheng between 2020 and 2022.Molecular typing,antimicrobial resistance patterns,and epidemiological characteristics were determined by genome sequencing and comparative genome analysis.Sequence type(ST)540 was the most prevalent ST of the 56 MRAB in Liaocheng,and most strains(92.86%)were grouped into CC92.Core genome multilocus sequence typing subdivided the strains according to the number of allelic differences and could distinguish different outbreaks caused by ST540 isolates in the hospitals.All the isolates harbored blaOXA-23 and blaADC-25,and at least 92.86%of the isolates were resistant to 10 antibiotics.The major MRAB epidemic clone detected in Liaocheng was ST540,which was different from the results reported in other regions in China.Furthermore,several inter-hospital transmissions of ST540 isolates were observed.The findings highlight the urgent need for effective nosocomial infection control measures and the continuous surveillance of ST540 MRAB in Liaocheng. | Fangyuan Cui Li Liu Xuefeng Miao Haiying Qian Shaocai Lu Jinjing Tian Guanhua Qiao Baobin Shao Qian Li Ran Zhang Shengnan Liang | 2023 | Journal of Biosafety and Biosecurity2023，5，2： | 0 |
| 19 | Large contributions of emission reductions and meteorological conditions to the abatement of PM_(2.5)in Beijing during the 24th Winter Olympic Games in 2022显示文摘To guarantee the blue skies for the 2022 Winter Olympics held in Beijing and Zhangjiakou from February 4 to 20,Beijing and its surrounding areas adopted a series of emission control measures.This provides an opportunity to determine the impacts of large-scale temporary control measures on the air quality in Beijing during this special period.Here,we applied the WRF-CMAQ model to quantify the contributions of emission reduction measures and meteorological conditions.Results show that meteorological conditions in 2022 decreased PM_(2.5)in Beijing by 6.9 and 11.8μg/m^(3)relative to 2021 under the scenarios with and without emission reductions,respectively.Strict emission reduction measures implemented in Beijing and seven neighboring provinces resulted in an average decrease of 13.0μg/m^(3)(-41.2%)in PM_(2.5)in Beijing.Over the entire period,local emission reductions contributed more to good air quality in Beijing than nonlocal emission reductions.Under the emission reduction scenario,local,controlled regions,other regions,and boundary conditions contributed 47.7%,42.0%,5.3%,and 5.0%to the PM_(2.5)concentrations in Beijing,respectively.The results indicate that during the cleaning period with the air masses from the northwest,the abatements of PM_(2.5)were mainly caused by local emission reductions.However,during the potential pollution period with the air masses from the east-northeast and west-southwest,the abatements of PM_(2.5)were caused by both local and nonlocal emission reductions almost equally.This implies that regional coordinated prevention and control strategies need to be arranged scientifically and rationally when heavy pollution events are forecasted. | Yaping Jiang Shaocai Yu Xue Chen Yibo Zhang Mengying Li Zhen Li Zhe Song Pengfei Li Xiaoye Zhang Eric Lichtfouse Daniel Rosenfeld | 2024 | Journal of Environmental Sciences2024，，2： | 0 |
| 20 | Influence of Limited Soil on the Root Distribution and Anchorage of Vitex negundo L.显示文摘Field pull-out and laboratory tests were applied to investigate the effect of metal bolts and wire netting on plant root distribution and anchorage characteristics of 9-year-old Vitex negundo L. growing on a weakly weathered rocky slope (38°). Root number, length and diameter were recorded and single root specimens were classified and tested for tensile strength. The results show that root anchorage is different between the two constructions by bolts and wire. Under limited soil condition, root anchorage ability is 80% lower than when there is sufficient soil due to the reduction of the diameter and number of all second-order lateral roots, as well as the reduction of the tensile strength of the embedded second-order and first-order lateral roots on limited soil. We conclude that the distribution and anchorage of Vitex negundo L. is affected by limited soil availability on rocky slopes. | LONG Feng LI Shaocai SUN Hailong LI Chengjun | 2012 | Journal of Mountain Science2012，9，5： | 0 |
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