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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

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Urban Land Use Efficiency and Contributing Factors in the Yangtze River Delta Under Increasing Environmental Restrictions in China

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Chinese Geographical Science 2022年第5期32卷 883-895页

作者： YANG Qingke wang Lei QIN Xianhong FAN Yeting wang yazhu DING Linlin School of Public Administration Nanjing University of Finance&EconomicsNanjing 210023China Key Laboratory of Coastal Zone Exploitation and Protection Ministry of Natural ResourcesNanjing 210017China Key Laboratory of Watershed Geographic Sciences Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China School of Public Administration Hohai UniversityNanjing 211100China Institute of Population Sciences Hohai UniversityNanjing 211100China

Evaluating urban land use efficiency(ULUE) provides insights into the interactions between land use systems and their external environment. Specifically, changes in ULUE are important for monitoring urban transformation in developing countries. In this study, using a traditional input-output index model, we incorporated slack-based measurements and undesirable outputs into a SBM-UN(slack-based measure-undesirable) model to investigate ULUE within the context of increasing environmental restrictions in China. The model was used to estimate the ULUE of 26 cities in the highly developed urban agglomeration of the Yangtze River Delta from 2000 to2018. The average ULUE in the Yangtze River Delta was relatively low compared to that of developed city regions in the European Union(EU) and North America and exhibited a U-shaped curve over the study period. Incorporating undesirable outputs, such as environmental pollution, into the model reduced ULUE by 19.06%. ULUE varied spatially, with the kernel density estimation exhibiting a bimodal distribution. Efficiency decomposition analysis showed that scale efficiency made a greater contribution to ULUE than pure technical efficiency. Based on our findings, recommended approaches to improve ULUE include optimizing factor allocation, reducing undesirable outputs, and increasing the effective output per land unit. The study suggests that ULUE and the SBM-UN model are useful planning tools for sustainable urban development.

关键词： urban land use efficiency(ULUE) environmental restriction efficiency decomposition kernel density estimation SBM-UN(slack-based measure-undesirable)model Yangtze River Delta China

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Influence Mechanism of New-type Urbanization on Urban Land Use Efficiency in the Yangtze River Delta, China

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Chinese Geographical Science 2023年第3期33卷 474-488页

作者： YANG Qingke DING Linlin wang Lei LIU Chao FAN Yeting LI Ying wang yazhu School of Public Administration Nanjing University of Finance&EconomicsNanjing 210023China Key Laboratory of Coastal Zone Exploitation and Protection Ministry of Natural ResourcesNanjing 210017China Key Laboratory of Watershed Geographic Sciences Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China Faculty of Political Science College of Public AdministrationCentral China Normal UniversityWuhan 430079China

Rapid urbanization in China has led to inefficient use of urban land and spatial structure disorder,attracting attention from academia and *** the Yangtze River Delta,China as an example,this study constructed an index evaluation system that quantitatively analyses the impact of new-type urbanization(NTU)on urban land use efficiency(ULUE)from 2000 to 2020 using a panel data vector autoregressive *** results show that NTU in the Yangtze River Delta promotes ULUE ***,the promotion of NTU to ULUE is limited,and the level of urban economic development also plays a role in promoting the change of ***,the study further analyzed the results of urbanization decomposition and found that population urbanization(PU),economic urbanization(EU),spatial urbanization(SU),and social urbanization(SCU)can explain changes in ULUE in the Yangtze River Delta to a certain *** terms of variance decomposition,PU contributed the most to ULUE,followed by EU,SU,and *** necessary measures should be taken to coordinate the development of different types of urbanization,improve the sustainable utilization level of land resources,and provide a reference for high-quality development in the Yangtze River Delta.

关键词： Urbanization Yangtze Delta

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Induction-dependent neural marker expression and electrophysiological characteristics of bone marrow mesenchymal stem cells that naturally express high levels of nestin

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Chinese Science Bulletin 2011年第7期56卷 640-646页

作者： LIU Yu YE ZhiZhong wang yazhu DENG YuBin ZHOU GuangQian Department of Pathophysiology Zhongshan School of MedicineSun Yat-sen UniversityGuangzhou 510089China Department of Rheumatology The Futian Affiliated HospitalGuangdong Medical CollegeShenzhen 518000China Department of Orthopedics and Traumatology The University of Hong KongHong Kong 999077China

Under certain experimental conditions, bone marrow mesenchymal stem cells (MSCs) express neuronal phenotypes and neuronal markers, which suggests that they could be used to treat various neurological diseases. In the present study, MSCs were isolated from adult rat bone marrow, cultivated, and evaluated for neurotrophin expression profiles, as well as the potential to differentiate into functional neuronal-like cells in vitro. MSCs from passage 5 were pre-induced with DMEM/F12 medium containing 10% fetal bovine serum (FBS) and 10 ng/mL bFGF (fibroblast growth factor-2). Subsequently, a chemical inductor containing Di-methyl Sulphoxide (DMSO), Butylated Hydroxyanisole (BHA) and forskolin were used to induce neural expression of MSCs. Expression patterns of nestin, NF-200, and GFAP at time points before and after induction were detected by immunofluorescence. Nerve Growth Factor (NGF), brain-derived neurotrophic factor (BDNF) expressions in MSCs were evaluated by RT-PCR. The whole-cell patch clamp technique was utilized to elucidate the electrical behavior of MSC before and after 24-h differentia-tion induction. Immunofluorescence analysis revealed that MSCs expressed nestin (57.1% ± 6.9%), but not NF-200 or GFAP. Following neural induction, the cells exhibited a neuronal-like appearance. Nestin and NF-200 expression was positive in the neuronal-like cells, but GFAP expression was negative. After 6-, 12-and 24-h induction, the ratio of nestin-positive cells was 96.5% ± 1.9%, 88.1% ± 5.4%, and 33.5% ± 5.4%. NF-200 positive cells were 90.1% ± 2.9%, 97.5% ± 1.3%, and 98.1% ± 1.6%, respectively. However, prior to induction, MSCs already expressed NGF and BDNF. With a stimulus impulse of 40 mV, the den-sity of the transient outward K current was (9.95 ± 4.85) pA/pF (n = 9) and (328.50 ± 30.62) pA/pF (n = 9) before and after induc-tion, and the density of transient calcium ion currents was (–0.059 ± 0.027) pA/pF (n = 7) and (–6.66 ± 0.50) pA/pF (n = 7), re-spectively. Trans

关键词：骨髓间质干细胞神经元样细胞表型标记巢蛋白电生理特性脑源性神经营养因子自然地表高水

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社会养老、家庭养老与城乡居民的生活质量——基于全国8省入户调查数据的实证分析

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浙江社会科学 2019年第5期 75-82,120,157-158页

作者：徐强周杨王雅珠华南农业大学公共管理学院广州510642 广东工业大学管理学院

生活质量是从社会发展的角度考察人口生活状况的综合指标,是可持续发展中"以人为本"理念的集中体现。本文基于全国8个省份1371份田野调查数据,运用logistic回归模型实证分析社会养老、家庭养老两种不同的养老方式对城乡居民生活质量的... 详细信息

生活质量是从社会发展的角度考察人口生活状况的综合指标,是可持续发展中"以人为本"理念的集中体现。本文基于全国8个省份1371份田野调查数据,运用logistic回归模型实证分析社会养老、家庭养老两种不同的养老方式对城乡居民生活质量的影响效应。研究结果表明:社会养老保险显著提高城乡居民的生活质量,家庭养老中家庭储蓄显著提高城乡居民的生活质量,但子女数量并不一定带来生活质量的提升,它虽有利于养老担忧度的缓解,但却带来相对剥夺感增强和身体健康度下降。因此,家庭养老需由关注子女数量向注重子女质量方向发展,进行子女教育投资和人力资本积累。

关键词：社会养老家庭养老生活质量

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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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Journal of Geographical Sciences 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

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rs2200733多态性与心房颤动、肺静脉大小及其隔离术后复发的相关性研究

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第三军医大学学报 2018年第5期40卷 443-448页

作者：王亚珠殷跃辉重庆市第五人民医院心血管内科重庆400062 重庆医科大学附属第二医院心血管内科重庆400010

目的研究rs2200733多态性与心房颤动、肺静脉隔离术后复发的相关性。方法筛选2009年7月至2010年12月期间在重庆地区4家三甲医院心血管内科就诊的患者207例,其中男性114例,女性93例,年龄(60.8±10.7)岁,体质量指数BMI(24.2±3.9)kg/m^2... 详细信息

目的研究rs2200733多态性与心房颤动、肺静脉隔离术后复发的相关性。方法筛选2009年7月至2010年12月期间在重庆地区4家三甲医院心血管内科就诊的患者207例,其中男性114例,女性93例,年龄(60.8±10.7)岁,体质量指数BMI(24.2±3.9)kg/m^2。按有无心房颤动分为2组:房颤组(有心房颤动,100例)和对照组(无心房颤动病史,107例)。收集患者临床资料和静脉血标本,分别提取其基因组DNA,通过聚合酶链反应-限制性片段长度多态性方法和直接测序法检测各患者的rs2200733多态性的基因型。随访40例行肺静脉隔离术的房颤患者,通过生存分析探讨房颤复发的危险因素。结果 (1)房颤组的CT基因型频率(75.0%)较对照组(61.7%)明显增高(P0.05);左上肺静脉前后径≥17.45 mm(χ~2=33.089,P<0.05)、左上肺静脉上下径≥17.50 mm(χ~2=32.189,P<0.05)、右上肺静脉前后径≥18.60 mm(χ~2=34.264,P<0.05)、右下肺静脉前后径≥16.30 mm(χ~2=13.546,P<0.05)、右下肺静脉上下径≥16.70 mm(χ~2=14.870,P<0.05)是术后复发的危险因素。结论 rs2200733多态性CT基因型可促进房颤患者肺静脉增粗,是房颤发生、发展以及术后复发的危险因子。

关键词：心房颤动肺静脉隔离术 rs2200733多态性复发

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党建引领、多元联动与居民为本:社区治理创新的基本向度——基于“赤岗经验”的研究

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福建论坛（人文社会科学版） 2019年第6期 179-185页

作者：张开云王雅珠赵虎华南农业大学

社区是国家治理的微观场域,社区治理与创新是国家治理的基础。然而,社区治理面临诸多难题,只有创新才能推进社区发展。党建引领、多元联动和居民为本是社区治理创新的基本向度。社区治理创新的“赤岗模式”成功地践行了这三个基本向度... 详细信息

社区是国家治理的微观场域,社区治理与创新是国家治理的基础。然而,社区治理面临诸多难题,只有创新才能推进社区发展。党建引领、多元联动和居民为本是社区治理创新的基本向度。社区治理创新的“赤岗模式”成功地践行了这三个基本向度。实践表明,党建引领是社区治理的核心和根本遵循,多元联动是社区治理的关键和有效途径,居民为本是社区治理的目标和基本归宿。社区治理创新必须协同推进这三个基本向度,才能有效达成社区治理创新的合法性、有效性和可持续性。

关键词：社区治理赤岗模式党建引领多元联动居民为本

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长三角地区城市土地利用与生态环境效应的交互作用机制研究

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地理科学进展 2021年第2期40卷 220-231页

作者：杨清可段学军王磊王雅竹南京财经大学公共管理学院南京210023 中国科学院南京地理与湖泊研究所南京210008 中国科学院流域地理学重点实验室南京210008

论文以"长江三角洲城市经济协调会"内16个核心成员城市作为典型案例,构建城市土地利用与生态环境效应评价指标体系,运用灰色关联评价模型探究2000—2015年间城市土地利用与生态环境效应的时空演变规律与耦合度变化,解析系统间交互作用... 详细信息

论文以"长江三角洲城市经济协调会"内16个核心成员城市作为典型案例,构建城市土地利用与生态环境效应评价指标体系,运用灰色关联评价模型探究2000—2015年间城市土地利用与生态环境效应的时空演变规律与耦合度变化,解析系统间交互作用机制。结果表明:①长三角地区城市土地利用指数不断增加,社会经济发展与土地利用开发均起到正向促进作用。社会经济发展对城市生产、生活空间和环境质量产生更多需求,建设用地扩张、耕地面积被侵占、人口承载增大也是导致城市土地利用指数上升的重要因素。②区域生态环境质量整体表现平稳,效应映射到空间上,变化幅度与演变特征明显。浙江省的城市生态环境质量高于上海与江苏的城市,这与环境自净能力、污染处理设施建设以及生态保护理念的宣传等因素相关。③城市土地利用与生态环境效应耦合度较低的城市占多数,处于失调状态。城镇化进程中用地扩张呈现低密度、分散化倾向,对生态安全和环境质量扰动强烈,导致城市土地利用与生态环境保护的空间偏离度加大。④城市土地利用系统与生态环境系统各要素间存在较强的相互作用关系,要素胁迫与约束作用强度大小差异明显。

关键词：城市土地利用生态环境效应交互作用机制长三角地区

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村镇建设资源环境承载力的理论基础与测算体系

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资源科学 2020年第7期42卷 1236-1248页

作者：段学军王雅竹康珈瑜柏培源中国科学院南京地理与湖泊研究所南京210008 中国科学院流域地理学重点实验室南京210008 中国科学院大学北京100049

伴随快速工业化和城镇化,中国不少村镇出现"五化"(非农化、老弱化、空废化、污损化、贫困化)现象,成为制约中国建成全面小康社会的障碍。构建村镇建设资源环境承载力的理论与测算方法体系有助于支持村镇因地制宜、充分利用当地水、土等... 详细信息

伴随快速工业化和城镇化,中国不少村镇出现"五化"(非农化、老弱化、空废化、污损化、贫困化)现象,成为制约中国建成全面小康社会的障碍。构建村镇建设资源环境承载力的理论与测算方法体系有助于支持村镇因地制宜、充分利用当地水、土等资源优势,振兴乡村经济,改善村居环境,提升居民幸福感。本文梳理了资源环境承载力的研究脉络、应用领域与尺度特征,并以村镇地域系统为对象,从综合性与地域性视角界定了村镇建设资源环境承载力的概念,从承载力与承载体及其相互关系切入,剖析了村镇建设资源环境承载力的内涵和外延。在对村镇建设类型总结的基础上,分析了不同类型村镇建设与资源环境要素的互馈关系,探讨了村镇建设与资源环境承载力的相互作用机理。最后,通过指标体系与系统模型构建,采用"短板原理",初步构建了村镇建设资源环境承载力测算体系的理论模型。本文主要贡献为完善了资源环境承载力的理论体系以及系统评估方法,同时对于乡村振兴具有一定理论与实践意义。

关键词：资源环境承载力村镇建设类型互馈关系理论基础测算体系

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