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Frontiers of Environmental Science & Engineering 2024年第9期18卷 105-114页

作者： Jing Li Dazhong Yang Wensong Zou Xuezhen Feng ranhao wang Renji Zheng Siyuan Luo Zheting Chu Hong Chen State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution ControlSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Red soil,the most critical soil resource in tropical/subtropical regions worldwide,faces tremendous threats,including nutrient deficiency,acidification,and heavy metal *** is a great demand for multifunctional eco-materials capable of modifying this ***,we used widely distributed soil and biomass to develop a zeolite/biochar composite for synergistic red soil remediation and *** the composite material,the Pb^(2+) and Cd^(2+) remediation efficiencies reached 92.8%and 92.9%,respectively,in stems under optimal ***,the acidity and nutrient deficiency conditions of red soil significantly *** atomic-scale interaction mechanism during the remediation and amendment process was elucidated with complementary characterization methods,which revealed that in the zeolite/biochar composite material,zeolite contributes to longterm heavy metal remediation ***,biochar is responsible for soil quality amendment and short-term heavy metal ***,for the first time,single-atom heavy metal ions were observed on biochar during the remediation process,indicating the broad distribution of single atoms in the natural environment.

关键词： Red soil Heavy metal pollution Zeolite/biochar composite Soil remediation Soil amendment

Bandgap engineering of tetragonal phase CuFeS_(2)quantum dots via mixed-valence single-atomic Ag decoration for synergistic Cr(VI)reduction and RhB degradation

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Chinese Chemical Letters 2021年第11期32卷 3450-3456页

作者： Yangzi Shangguan Yuanhao Zhou Renji Zheng Xuezhen Feng Qiuyue Ge ranhao wang Dazhong Yang Wenfei Wei Xiaoyong Wu Jia Lin Hong Chen Department of Physics Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric PowerShanghai University of Electric PowerShanghai 200090China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution ControlSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Hubei Key Laboratory of Mineral Resources Processing and Environment School of Resources and Environmental EngineeringWuhan University of TechnologyWuhan 430070China

Bandgap engineering through single-atom site binding on semiconducting photocatalyst can boost the intrinsic activity,selectivity,carrier separation,and electron ***,we report a mixed-valence Ag(0)and Ag(I)single atoms co-decorated semiconducting chalcopyrite quantum dots(Ag/CuFeS_(2)QDs)*** demonstrates efficient photocatalytic performances for specific organic dye(rhodamine B,denoted as RhB)as well as inorganic dye(Cr(VI))removal in water under natural sunlight *** RhB degradation and Cr(VI)removal efficiencies by Ag/CuFeS_(2)QDs were 3.55 and 6.75 times higher than those of the naked CuFeS_(2)QDs at their optimal pH conditions,***,in a mixture of RhB and Cr(VI)solution under neutral condition,the removal ratio has been elevated from 30.2%to 79.4%for Cr(VI),and from 95.2%to 97.3%for RhB degradation by using Ag/CuFeS_(2)QDs after 2 h sunlight *** intrinsic mechanism for the photocatalytic performance improvement is attributed to the narrow bandgap of the single-atomic Ag(I)anchored CuFeS_(2)QDs,which engineers the electronic structure as well as expands the optical light response ***,the highly active Ag(0)/CuFeS_(2)and Ag(I)/CuFeS_(2)effectively improve the separation efficiency of the carriers,thus enhancing the photocatalytic *** work presents a highly efficient single atom/QDs photocatalyst,constructed through bandgap engineering via mixed-valence single noble metal atoms binding on semiconducting *** paves the way for developing high-efficiency single-atom photocatalysts for complex pollutions removal in dyeing wastewater environment.

关键词： Single-atom catalysts Bandgap engineering Cr(VI)reduction Organic pollutants degradation Dyeing wastewater treatment

大数据赋能乡村全民健身公共服务治理的逻辑理路、价值意蕴、问题清单及优化策略

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体育科技文献通报 2023年第8期31卷 96-100页

作者：王然浩张红娟山西师范大学体育学院山西太原030000

本文运用文献资料、专家访谈等研究方法,深入探究大数据赋能乡村全民健身公共服务治理的逻辑理路、价值意蕴、问题清单及优化策略。研究结果:转变治理观念的先导条件是大数据思维,爬取治理信息的重要抓手是大数据技术,推动治理共享的有... 详细信息

本文运用文献资料、专家访谈等研究方法,深入探究大数据赋能乡村全民健身公共服务治理的逻辑理路、价值意蕴、问题清单及优化策略。研究结果:转变治理观念的先导条件是大数据思维,爬取治理信息的重要抓手是大数据技术,推动治理共享的有效载体是大数据平台,增强治理能力的智力保障是大数据人才。价值意蕴体现在大数据应用驱动治理精细执行、大数据分析促进治理科学决策、大数据反馈增强治理有效监督、大数据共享完善治理民主服务。问题清单:循数治理条件缺位影响数治格局、数据应用潜在风险冲击数治安全、数据治理制度缺乏钳制数治价值、技术应用能力羸弱弱化数治效能。针对困境提出优化策略:推进数据人才培养激发治理内生动力、健全数据治理制度夯实政策保障、增强数据治理水平规避治理风险、优化数据治理环境铸牢数治基础。

关键词：大数据乡村全民健身公共服务

Effects of riparian vegetation patterns on the distribution and potential loss of soil nutrients： a case study of the Wenyu River in Beijing

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Frontiers of Environmental Science & Engineering 2015年第2期9卷 279-287页

作者： Erhui GUO Liding CHEN ranhao SUN Zhaoming wang State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China University of Chinese Academy of Sciences Beijing 100049 China

A riparian ecosystem is an ecological transition zone between a river channel and terrestrial ecosystems. Riparian ecosystems play a vital role in maintaining stream health and bank stabilization. The types of riparian vegetation have changed greatly because of human activities along the Wenyu River. This study examines the impact of riparian vegetation patterns on water pollution due to soil nutrient loss. Four riparian vegetation patterns from the river channel to the upland were chosen as the focus of this study： grassland, cropland, grassland- cropland, and grassland-manrnade lawn. The different distributions of soil nutrients along vegetation patterns and the potential risk of nutrient loss were observed and compared. The results showed that riparian cropland has the lowest value of total nitrogen （TN）, total phosphorus （TP）, available nitrogen （AN）, available phosphorus （AP）, and organic matter （OM）, but it has the highest soil bulk density （BD）. The distributions of soil TN, TP, AN, AP, and OM exhibited a declining trend from the upland toward the river channel for riparian cropland, whereas a different trend was observed for the riparian grassland. The vegetation patterns of grassland-cropland and grassland- manmade lawn show that the grassland in the lower slope has more nutrients and OM but lower soil BD than the cropland or manmade lawn in the upper slope. So, the lower-slope grassland may intercept and infiltrate surface runoff from the upland. The lower-slope grassland has higher levels of soil TN, TP, AN, and AP, and thus it may become a new source of nutrient loss. Our results suggest that the management of the riparian vegetation should be improved, particularly in densely populated areas, to control soil erosion and river pollution.

关键词： riparian vegetation pattems soil nutrientdistribution nutrient loss management

Analysis and assessment of heavy metal contamination in surface water and sediments： a case study from Luan River, Northern China

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Frontiers of Environmental Science & Engineering 2015年第2期9卷 240-249页

作者： Zhaoming wang ranhao SUN Haiping ZHANG Liding CHEN State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China University of Chinese Academy of Sciences Beijing 100049 China

Concentrations of the heavy metals Cu, Ni, Pb, Zn, Cd, and Cr were examined in surface water and sediment from the Luan River inChina,. With a decline in Cu and Ni concentration found in surface water at downstream stations. This finding suggests that water currents are a major explanatory factor in heavy metal contamination. The abundance of Cr, Pb, and Cd observed in the middle reaches of the river indicates heavy metal contamination in local areas, although there was an obvious decrease in concentrations in the water downstream of the Daheiting Reservoir. The significant rising trend in Cu, Pb, and Ni seen the sediment farther away from the river also suggests that anthropogenic activities contribute to heavy metal pollution Sediments were therefore used as environmental indicators, with sediment assessment was conducted using the geo-accumulation index （Igeo） and the potential ecological risk index （R/）. The Igeo values revealed that Cd （3.13） and Cr （2.39） had accumulated significantly in the Luan River. The R/values for most （89%） of the sampling stations were higher than 300, suggesting that sediment from the Luan River poses a severe ecological risk, with the potential ecological risks downstream higher than that in the upper and middle streams. Good correlations among Pb/Ni, Pb/Cd, Cu/Pb, and Cu/Cd in the water and Cr/Ni in the sediment were observed. Cluster analysis suggested that Cd may have various origins, being derived from anthropogenic sources.

关键词： tion index heavy metal water sediment geo-accumula- Luan River

Surface-enhanced Raman scattering for mixing state characterization of individual fine particles during a haze episode in Beijing,China

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Journal of Environmental Sciences 2021年第6期33卷 216-224页

作者： Hui Chen Fengkui Duan Jingjing Du ranhao Yin Lidan Zhu Jinlu Dong Kebin He Zhenli Sun Suhua wang MOE Key Laboratory of Resources and Environmental System Optimization College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000China

The nondestructive characterization of the mixing state of individual fine particles using the traditional single particle analysis technique remains a *** this study,fine particles were collected during haze events under different pollution levels from September 5 to 112017 in Beijing,China.A nondestructive surface-enhanced Raman scattering(SERS)technique was employed to investigate the morphology,chemical composition,and mixing state of the multiple components in the individual fine *** image and SERS spectral analysis results show that soot existing in the form of opaque material was predominant during clear periods(PM_(2.5)≤75μg/m^(3)).During polluted periods(PM_(2.5)>75μg/m^(3)),opaque particles mixed with transparent particles(nitrates and sulfates)were generally *** classical least squares analysis further identified the relative abundances of the three major components of the single particles:soot(69.18%),nitrates(28.71%),and sulfates(2.11%).A negative correlation was observed between the abundance of soot and the mass concentration of PM_(2.5).Furthermore,mapping analysis revealed that on hazy days,PM_(2.5)existed as a core-shell structure with soot surrounded by nitrates and *** mixing state analysis method for individual PM_(2.5)particles provides information regarding chemical composition and haze formation mechanisms,and has the potential to facilitate the formulation of haze prevention and control policies.

关键词： PM_(2.5) Surface-enhanced Raman scattering Individual fine particle Nitrate Sulfate Soot

Exploration of Curriculum Ideology and Politics Integrating Medical Humanities Cultivation Model to Enhance Medical Core Values

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Journal of Contemporary Educational Research 2024年第5期8卷 1-7页

作者： Wenjuan Ni ranhao Li Yaqing Guo Wei wang Department of Hematology The First Affiliated Hospital of Baotou Medical CollegeBaotou 014010Inner Mongolia Autonomous RegionChina Department of Endocrinology Ulanqab Central HospitalUlanqab 012000Inner Mongolia Autonomous RegionChina Department of Teaching Management The First Affiliated Hospital of Baotou Medical CollegeBaotou 014010Inner Mongolia Autonomous RegionChina Department of Endocrinology The First Affiliated Hospital of Baotou Medical CollegeBaotou 014010Inner Mongolia Autonomous RegionChina

Purpose:To explore the application effect of the cultivation mode of Curriculum Ideology and Political Integration of Medical Humanities to enhance the core values of medicine in the clinical internship stage of medical ***:Students in the clinical internship stage of the First Affiliated Hospital of Baotou Medical College were selected,and a total of 156 students in one random class in each grade were taken as the observation group and received the integration cultivation mode;148 students were taken as the control group and employed the traditional *** teaching effect of interns in the two groups was ***:The teaching performance of students in both groups after clinical internship teaching was improved compared with that before admission;the teaching performance,teaching effect,teaching evaluation,and teaching satisfaction of the observation group were higher than that of the control ***:The integration of the medical humanities training model with curriculum ideology and politics in the clinical internship of medical students is conducive to the improvement of teaching performance,teaching evaluation,teaching satisfaction of teachers and students,and the development and improvement of core values of medical students,which is of good value for teaching application.

关键词： Curriculum ideology and politics Medical humanities Medical students Core values Clinical internship

Mass elevation effect and its forcing on timberline altitude

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Journal of Geographical Sciences 2012年第4期22卷 609-616页

作者： HAN Fang YAO Yonghui DAI Shibao wang Chun SUN ranhao XU Juan ZHANG Baiping Geographic Information and Tourism College Chuzhou UniversityChuzhou 239000AnhuiChina State Key Laboratory of Resource and Environment Information System Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental ScienceCASBeijing 100085China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences(CAAS)Beijing 100081China

The concept of mass elevation effect （massenerhebungseffect, MEE） was introduced by A. de Quervain about 100 years ago to account for the observed tendency for temperature-related parameters such as tree line and snowline to occur at higher elevations in the central Alps than on their outer margins. It also has been widely observed in other areas of the world, but there have not been significant, let alone quantitative, researches on this phenomenon. Especially, it has been usually completely neglected in developing fitting mod- els of timberline elevation, with only longitude or latitude considered as impacting factors. This paper tries to quantify the contribution of MEE to timberline elevation. Considering that the more extensive the land mass and especially the higher the mountain base in the interior of land mass, the greater the mass elevation effect, this paper takes mountain base elevation （MBE） as the magnitude of MEE. We collect 157 data points of timberline elevation, and use their latitude, longitude and MBE as independent variables to build a multiple linear regression equation for timberline elevation in the southeastern Eurasian continent. The results turn out that the contribution of latitude, longitude and MBE to timberline altitude reach 25.11%, 29.43%, and 45.46%, respectively. North of northern latitude 32°, the three factors＇ contribution amount to 48.50%, 24.04%, and 27.46%, respectively; to the south, their contribution is 13.01%, 48.33%, and 38.66%, respectively. This means that MBE, serving as a proxy indi- cator of MEE, is a significant factor determining the elevation of alpine timberline. Compared with other factors, it is more stable and independent in affecting timberline elevation. Of course, the magnitude of the actual MEE is certainly determined by other factors, including mountain area and height, the distance to the edge of a land mass, the structures of the mountains nearby. These factors need to be inctuded in the study of MEE qu

关键词： mass elevation effect mountain base elevation altitudinal belts quantification Eurasia

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区域气候背景对城市热岛效应的影响规律

生态学报 2021年第11期41卷 4288-4299页

作者：王阳孙然好云南大学国际河流与生态安全研究院昆明650009 中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085

城市热岛效应受到区域气候背景的影响而具有显著的时空差异性,尚缺少大尺度对比研究。利用1991—2019年的月均气象数据,量化了我国69个典型城市的大气城市热岛效应强度,从热带、干带、暖温带、冷温带和极地带五个气候带,分析城市热岛效... 详细信息

城市热岛效应受到区域气候背景的影响而具有显著的时空差异性,尚缺少大尺度对比研究。利用1991—2019年的月均气象数据,量化了我国69个典型城市的大气城市热岛效应强度,从热带、干带、暖温带、冷温带和极地带五个气候带,分析城市热岛效应的时空特征规律。结果表明:(1)区域差异:干带热岛效应明显高于其他气候带,极地带最弱,且表现为较强的冷岛效应,热带、暖温带、冷温带热岛效应较弱,而冷温带的京津冀地区由于城市化程度较高,表现出较强的热岛效应,温暖带中西南地区较为明显;(2)季节性差异:不同季节城市热岛效应的强弱关系在不同气候带有所不同,秋季热岛效应较为稳定,热岛和冷岛效应均主要处于弱强度范围,春、冬热岛效应较为波动,易出现强热岛、强冷岛效应的极端现象,夏季热岛效应发生率最高;(3)时间演变规律:城市热岛效应的多年演变规律在相同气候带较为一致,2010年前后是各气候带各季节城市热岛效应的变化拐点,2010年后,干带、冷温带、暖温带热岛效应均有所下降,热带、极地带有所上升。

关键词：城市热岛效应大气城市热岛效应气候带冷岛效应

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北京市区车辆热排放及其对小气候的影响

生态学报 2017年第3期37卷 953-959页

作者：王业宁孙然好陈利顶中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085 中国科学院大学北京100049

快速城市化导致城市热岛效应不断加剧,超大城市的车辆排热是影响城市热环境的重要因素之一。以北京五环区域为研究区,通过交通指数、交通密度、道路长度等指标计算了交通道路排热强度,辨识出北京市区街道尺度上车辆排热的时空动态规律;... 详细信息

快速城市化导致城市热岛效应不断加剧,超大城市的车辆排热是影响城市热环境的重要因素之一。以北京五环区域为研究区,通过交通指数、交通密度、道路长度等指标计算了交通道路排热强度,辨识出北京市区街道尺度上车辆排热的时空动态规律;选择典型位点对小气候特征进行流动与连续监测,构建空间与时间序列上车辆排热与小气候特征的定量关系。结果表明,交通排热强度呈现辐射状空间分布,市区平均排热强度为8.6—10.8 W/m^2,三环内地区达32.2—53.9 W/m^2,白天平均排热强度约为夜间的2—10倍,且早晚高峰期排热强度最大,非工作日的排热空间特征同工作日并无明显差异;主要道路的温差同08:00时的交通排热相关性最显著,温差增幅为0.91℃/10 W/m^2;车辆排热与道路草地监测点的温差有显著正相关关系,温差增幅约为0.15℃/10 W/m^2,且排热对其温差有约10—20分钟的滞后效应。车辆排热的时空动态研究有助于科学规划城市道路和景观,改善城市热环境。

关键词：交通指数交通密度车辆排热强度温差