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Science China Chemistry 2024年第9期67卷 2989-2997页

作者： Pengxin wang Xiaoyong Zhang lingqing wang Rui wang Dongxu Yang Key Laboratory of Preclinical Study for New Drugs of Gansu Province School of Basic Medical Sciences&Research Unit of Peptide ScienceChinese Academy of Medical SciencesLanzhou UniversityLanzhou 730000China State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China School of Sciences Great Bay UniversityDongguan 523000China Institute of Systems and Physical Biology Shenzhen Bay LaboratoryShenzhen 518055China

Chirality transformation is a basic,attractive,and important strategy for obtaining enantioenriched products with desired chiral *** reported chirality conversion reaction often involves the process from one type of chirality to another *** better utilize the chirality transformation strategy for obtaining two or more products with different chiral elements in a single reaction,a new method of kinetic resolution accompanied by a chirality transformation protocol is proposed and successfully realized in this *** process is used for the asymmetric oxidation of phenol compounds along with the kinetic resolution of oxaziridines.A wide scope of products,including axially chiral phenols,oxaziridines,andα-hydroxyl cyclic ketones were smoothly obtained in high levels of yields and enantioselectivities in the developed *** products can be readily used for the synthesis of various types of chiral ligands,which are potential choices for other catalytic asymmetric reactions.

关键词： chirality transformation kinetic resolution accompanied axially chiral phenols chiral oxaziridines

Study on the spatial and temporal evolutionary characteristics of ozone concentration and the impact of human activities in China in 2019

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Acta Geochimica 2024年第5期43卷 985-995页

作者： Yongchun wang wang Zhang Yu’an Liu Yazhu wang Yuting Fu Zhaohui Feng lingqing wang School of Geography South China Normal UniversityGuangzhou 510631China College of Urban and Environmental Sciences Hunan University of TechnologyZhuzhou 412007China Nanjing Institute of Geography and Limnology Chinese Academy of SciencesNanjing 210008China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China

Ozone(O_(3))pollution has a profound impact on human health,vegetation development,and the ecological environment,making it a critical focus of global academic *** recent years,O_(3)pollution in China has been on a steady rise,with ozone emerging as the sole conventional pollutant to consistently increase in concentration without any *** study conducted a quantitative analysis of O_(3)concentrations across 367 Chinese cities in 2019,examining spatial autocorrelation and local clustering of O_(3)levels,and investigated the diverse relationships between human activity factors and O_(3)*** seasonal fluctuation of O_(3)exhibited the“M-type”pattern,with peak concentrations in winter and the lowest levels in *** center of O_(3)pollution migrated southeastward,with the area of highest concentration progressively shifting south along the eastern ***,O_(3)concentration showed a strong positive correlation with population density,road freight volume,and industrial emissions,suggesting that human activities,vehicle emissions,and industrial operations are significant contributors to O_(3)*** results provide comprehensive information on the characteristics,causes,and occurrence mechanism of O_(3)in Chinese cities that can be utilized by global government departments to formulate strategies to prevent and control O_(3)pollution.

关键词： Ozone concentration Urban agglomerations Human activities Spatial heterogeneity

Contamination and health risk assessment of heavy metals in road dust in Bayan Obo Mining Region in Inner Mongolia, North China

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Journal of Geographical Sciences 2015年第12期25卷 1439-1451页

作者： LI Kexin LIANG Tao wang lingqing YANG Zhiping Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China

The objective of this study was to investigate the concentration and spatial distribu- tion patterns of 9 potentially toxic heavy metal elements （As, Cd, Co, Cr, Pb, Cu, Z.n, Mn, and Ni） in road dust in the Bayan Obo Mining Region in Inner Mongolia, China. Contamination levels were evaluated using the geoaccumulation index and the enrichment factor. Human health risks for each heavy metal element were assessed using a human exposure model. Results showed that the dust contained significantly elevated heavy metal elements concen- trations compared with the background soil. The spatial distribution pattern of all tested met- als except for As coincided with the locations of industrial areas while the spatial distribution of As was associated with domestic sources. The contamination evaluation indicated that Cd, Pb, and Mn in road dust mainly originated from anthropogenic sources with a rating of ＂heav- ily polluted＂ to ＂extremely polluted,＂ whereas the remaining metals originated from both natural and anthropogenic sources with a level of ＂moderately polluted＂. The non-cancer health risk assessment showed that ingestion was the primary exposure route for all metals in the road dust and that Mn, Cr, Pb, and As were the main contributors to non-cancer risks in both children and adults. Higher HI values were calculated for children （H1=1.89）, indicating that children will likely experience higher health risks compared with adults （H1=0.23）. The cancer risk assessment showed that Cr was the main contributor, with cancer risks which were 2-3 orders of magnitude higher than those for other metals. Taken in concert, the non-cancer risks posed by all studied heavy metal elements and the cancer risks posed by As Co, Cr, Cd, and Ni to both children and adults in Bayan Obo Mining Region fell within the acceptable range.

关键词： road dust heavy metal elements contamination assessment health risk assessment Bayan Obo Mining Region

Simulation on phosphorus release characteristics of Poyang Lake sediments under variable water levels and velocities

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Journal of Geographical Sciences 2017年第6期27卷 697-710页

作者： TONG Yali LIANG Tao wang lingqing LI Kexin Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China

Since the construction of the Three Gorges Dam, the Poyang Lake hydrological characteristics obviously changed. During the impoundment period of the Three Gorges Reservoir, the hydrodynamic factors of Poyang Lake varied. Water level dropped, the velocity decreased and water exchange time lengthened, which changed the release of phosphorous from sediments. In order to investigate how the hydrodynamic factors influence the release of phosphorous from sediments, we used a two-way annular flume device to simulate the release characteristics of phosphorous from sediments under variable water levels and velocities. We found that both water level rising and velocity increasing could enhance the distur- bance intensity to sediments, which caused the increase of suspended solids （SS） concentration, total phosphorus （TP） concentration in the overlying water, and the ability that phosphorus released to overlying water from sediments enhanced as well： when overlying water velocity maintained 0.3 m/s, SS concentration increased to 4035.85 mg/L at the water level 25 cm which was about 25 times compared to the minimum value and TP concentration in the overlying water also reached the maximum value at the water level 25 cm which was 1.2 times that of the value at 10 cm; when water level maintained 15 cm, SS concentration increased to 4363.35 mg/L at the velocity of 0.5 m/s which was about 28 times compared to the value of 0 m/s, and TP concentration in the overlying water increased from 0.11 mg/L to 0.44 mg/L. When the water level maintained 15 cm, the phosphorous release rate reached the maximum value of 4,86 mg/（md） at 0.4 m/s. The concentration of total dissolved phosphorous （TDP） and soluble reactive phosphate （SRP） both in overlying water and sediment-water interface were negatively correlated with pH. Using the parabolic equation, the optimum water level at a velocity of 0.3 m/s was calculated to be 0.57 cm, and the optimum velocity at water level of 15 cm was found to be 0.2

关键词： hydrodynamic factors sediment-water interface total phosphorous total dissolved phosphorous soluble reactive phosphate Poyang Lake

中国沿海乡村多功能演变及其自然和社会经济影响因素

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地理学报:英文版 2023年第9期33卷 1791-1814页

作者：王雅竹段学军王磊王凌青 Key Laboratory of Watershed Geographic Sciences Nanjing Institute of Geography and LimnologyCASNanjing 210008China Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China

Rural decline has become a global *** address this issue,the division of rural functions and identification of driving factors are important means of rural *** the town area as a unit,this study conducts a division and evolution analysis of rural regional functions in Jiangsu province in coastal China by constructing an evaluation system using the spatial econometric model to diagnose endogenous and exogenous driving factors of rural multifunction *** results show that the functions of agricultural supply and ecological conservation have decreased,while the functions of economic development and social security have *** production functions are concentrated in northern and central *** economic development function is mainly based on industrial development,and is the strongest in southern *** security functions are concentrated in suburban area,county centers,and key ***-value areas of ecological conservation are concentrated along lakes,the coast,and hilly areas of southern *** multifunctional development of villages and towns is affected by endogenous and exogenous factors,including economic geographic location,natural resources,economic foundation,human capital,traffic conditions,market demand,infrastructure,and environmental *** factors have a significant impact on the supply of agricultural products and the formation of ecological conservation *** effects of socioeconomic factors on these four functions differ *** study expands the theory of rural development functions,the classification and zoning paradigm,and the quantitative study of driving *** results provide a reference for practical value and policy significance for the reconstruction of rural functions and rural revitalization.

关键词： rural multifunction influencing factors spatial econometric analysis coastal China

双向环形水槽模拟变化水位和流速下洞庭湖沉积物氮释放特征

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湖泊科学 2016年第1期28卷 59-67页

作者：童亚莉梁涛王凌青田舒菡中国科学院地理科学与资源研究所中国科学院陆地表层格局与模拟重点实验室北京100101

浅水湖泊生态系统中的沉积物—水界面是湖泊内源氮释放的重要界面,而水动力因素是改变沉积物氮释放的重要因素.三峡大坝修建以后,长江中下游通江湖泊的水动力条件发生了明显的变化.通过采集洞庭湖湖口区域的沉积物和水样,在双向环形水... 详细信息

浅水湖泊生态系统中的沉积物—水界面是湖泊内源氮释放的重要界面,而水动力因素是改变沉积物氮释放的重要因素.三峡大坝修建以后,长江中下游通江湖泊的水动力条件发生了明显的变化.通过采集洞庭湖湖口区域的沉积物和水样,在双向环形水槽动力模拟装置内模拟湖泊水位和流速的变化,探讨湖泊沉积物氮在沉积物和水系统中的二次释放特征.结果表明,随着扰动强度的增加,上覆水悬浮物浓度增大,上覆水中总氮浓度增加,沉积物向上覆水释放氮的强度增强,水动力条件的改变所引起的沉积物内源氮释放不容忽视.在该模拟实验条件下,沉积物存在最适扰动水位(20cm),此水位下上覆水中悬浮物浓度最低,总氮浓度最小.水动力条件的改变对上覆水和沉积物—水界面处铵态氮和硝态氮浓度的影响并不明显,孔隙水中铵态氮与硝态氮之间发生形态的转化.

关键词：洞庭湖氮沉积物沉积物—水界面水位流速

贵屿电子垃圾拆解管控前后河流及沉积物中重金属时空分布及潜在生态风险评价

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环境科学学报 2023年第5期43卷 58-68页

作者：熊竹楠王思雨王凌青梁涛中国科学院地理科学与资源研究所陆地表层格局与模拟重点实验室北京100101 中国科学院大学中丹学院北京100190 中国科学院大学北京100049

电子垃圾的非正规拆解和回收已造成严重的水土环境污染,作为全球电子垃圾回收中心之一的广东汕头贵屿镇,在2012年集中管控前污染尤为严重.为评判近10年管控后的治污成效,本研究于2021年实测了贵屿镇河流及表层沉积物中的重金属含量,并... 详细信息

电子垃圾的非正规拆解和回收已造成严重的水土环境污染,作为全球电子垃圾回收中心之一的广东汕头贵屿镇,在2012年集中管控前污染尤为严重.为评判近10年管控后的治污成效,本研究于2021年实测了贵屿镇河流及表层沉积物中的重金属含量,并与管控前文献数据进行了对比,探讨了重金属在水和沉积物中的时空变化及潜在生态风险.结果表明,贵屿镇电子垃圾拆解导致河流与沉积物中重金属存在不同程度的输入,广泛存在于电子产品中的Cu、Zn、Ni、Pb、Cd在很大程度上超出我国其他主要流域.与管控前相比,练江贵屿段上覆水和沉积物中重金属含量总体下降,溶解态Cu含量有所上升;北港河上覆水中重金属含量降幅均在70%以上,但沉积物中Cr、Cu、Pb含量升高;练江支流沉积物中Cd、Cr、Cu、Pb含量在管控后呈降低趋势,但Zn、Ni含量受其他人为活动的影响大幅上升.贵屿镇沉积物目前仍处于极高生态风险水平,其中,Cd和Cu的潜在生态风险最高,对电子垃圾拆解的污染管控仍需持续加力.

关键词：电子拆解垃圾政策管控重金属时空分布生态风险评价贵屿

基于全要素多元价值发挥的国土空间规划探索——以河南省三门峡市为例

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城市规划学刊 2021年第2期 58-65页

作者：王慈陈睿王凌青孙钰婷王巍巍中国城市规划设计研究院中国科学院地理科学与资源研究所

国土空间规划编制需要对空间价值形成科学认知,并通过空间策略实现其保值增值。在梳理规划价值逻辑和空间实现手段演变的基础上,构建生态文明背景下全要素国土空间多元价值体系及相应的规划逻辑框架,重点提出空间格局的优化是各类空间... 详细信息

国土空间规划编制需要对空间价值形成科学认知,并通过空间策略实现其保值增值。在梳理规划价值逻辑和空间实现手段演变的基础上,构建生态文明背景下全要素国土空间多元价值体系及相应的规划逻辑框架,重点提出空间格局的优化是各类空间综合价值协调发挥的过程,各类空间均具有保护和发展的意义。因此国土空间规划需要以科学判断为前提识别和权衡处理多宜性空间的冲突矛盾,以用途管制和利用方式引导相结合发挥空间的复合性功能,加强更广泛的不同类型空间的耦合关联。结合三门峡典型城市案例对理论框架和技术思路予以实例验证,建立国土空间总体规划矩阵模型,对生态、农业、城镇空间具体策略提出探索性方案。

关键词：国土空间总体规划多元价值体系全要素国土空间空间策略三门峡市

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基于改进模糊数学法的河流水环境质量评价

南水北调与水利科技（中英文） 2021年第2期19卷 317-324,399页

作者：吕卓然丁爽王凌青首都经济贸易大学管理工程学院北京100070 中国科学院地理科学与资源研究所北京100101 中国标准化研究院北京100191

为克服传统河流水质评价方法结果失真、水质标准均化和主观任意性影响较大等缺点,选取2014—2016年大清河14个监测断面8个评价指标,运用改进模糊数学法与单因子评价法相结合的方法,进行水环境综合质量评价。结果显示:2014年及2015年不符... 详细信息

为克服传统河流水质评价方法结果失真、水质标准均化和主观任意性影响较大等缺点,选取2014—2016年大清河14个监测断面8个评价指标,运用改进模糊数学法与单因子评价法相结合的方法,进行水环境综合质量评价。结果显示:2014年及2015年不符合GB 3838—2002《地表水环境质量标准》中Ⅴ类功能区标准的断面为新盖房、望亭、码头、焦庄及安州断面,占该年监测断面的35.7%;2016年不符合标准的断面为码头断面,占该年监测断面的7.14%。其中,氨氮和总磷为监测断面的主要污染因子,氨氮平均超标6.78倍,总磷平均超标3.51倍。利用各级水质标准上下限的中间值作为评价标准,改进的模糊数学评价模型更具区分度,河流水环境质量评价结果更为准确可靠,可为流域水污染控制提供科学依据。

关键词：改进的模糊数学法单因子评价法水环境质量评价主要污染因子

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燃煤氟污染及钙基添加剂固氟研究进展

浙江师范大学学报（自然科学版） 2006年第3期29卷 311-316页

作者：王凌青陕西师范大学旅游与环境学院陕西西安710062

对煤中氟的含量分布、赋存状态等地球化学特征进行了综述,分析了煤炭燃烧过程中氟的迁移转化行为与释放特性,指出煤中氟的燃烧释放不仅与氟的物理化学性质有关,更取决于煤中氟的浓度、赋存状态及燃烧工况等因素.进一步讨论了天然钙基材... 详细信息

对煤中氟的含量分布、赋存状态等地球化学特征进行了综述,分析了煤炭燃烧过程中氟的迁移转化行为与释放特性,指出煤中氟的燃烧释放不仅与氟的物理化学性质有关,更取决于煤中氟的浓度、赋存状态及燃烧工况等因素.进一步讨论了天然钙基材料燃煤固氟技术及燃煤氟污染控制的研究现状.

关键词：煤氟赋存状态固氟技术