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Influence of seismicity parameter uncertainty on seismic hazard estimation of cities and towns 被引量:1
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作者 HUANG Wei-qiong(黄玮琼) +1 位作者 WU Xuan(吴宣) 《Acta Seismologica Sinica(English Edition)》 CSCD 2003年第6期632-638,共7页
The influence on seismic hazard estimation for 310 cities and towns in the whole nation are studied in particular,owing to uncertainty of seismicity parameters caused by non-uniqueness in selecting statistical time ra... The influence on seismic hazard estimation for 310 cities and towns in the whole nation are studied in particular,owing to uncertainty of seismicity parameters caused by non-uniqueness in selecting statistical time ranges. Andthe regional sketch maps of the average varying values of intensity and the average relative varying values of peakacceleration with different probability of exceedance in 50 years are drawn in the Chinese mainland. 展开更多
关键词 STATISTICAL time range UNCERTAINTY of parameters HAZARD estimation of cities and towns averagevarying VALUE
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Characteristics and Driving Forces of Spatial Expansion of Oasis Cities and Towns in Hexi Corridor, Gansu Province, China 被引量:3
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作者 LIU Hailong SHI Peiji +5 位作者 TONG Huali ZHU Guofeng LIU Haimeng ZHANG Xuebin WEI Wei WANG Xinmin 《Chinese Geographical Science》 SCIE CSCD 2015年第2期250-262,共13页
This paper presents an integrated study of urban spatial expansion in the Hexi Corridor, Gansu Province, China based on TM, ETM remote sensing data in 1987, 1990, 1995, 2000, 2006 and 2011. The study explores the char... This paper presents an integrated study of urban spatial expansion in the Hexi Corridor, Gansu Province, China based on TM, ETM remote sensing data in 1987, 1990, 1995, 2000, 2006 and 2011. The study explores the characteristics of urban spatial expansion and dynamic mechanism by using expansion speed index, expansion intensity index, compact index, fractal dimension, and extended flexibility index. We built the index system of influencing factors of urban spatial expansion by using the grey incidence model. The results showed that urban spatial expansion rate in the Hexi Corridor has been on the upward trend since 1987. Expansion intensity showed an obvious upward trend, however, the upward trend varied in different urban areas. In addition, the urban structure was loose relatively, but the urban compactness was more obvious. The urban spatial form tended to be simple, and the urban land use tended to become more intensive. Urban spatial expansion experienced several stages: padding internally, external expansion and padding internally. The main driving factors of urban spatial expansion are not the urban water resources and the oasis scale, but one or several factors such as economy, traffic, population, resource and national policy. 展开更多
关键词 spatial expansion driving forces oasis cities and towns Hexi Corridor China
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Preliminary Analysis on Environmental Impact of Relocation of Cities and Towns in the Three Gorges Reservoir Region
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作者 XUE Lian fangSenior Engineer, Central-South Design and Research Institute for Hydroelectric Project, State Power Corporation of China, Changsha 410014, China 《人民长江》 北大核心 2001年第S1期14-17,共4页
At the normal pool level of 175 m, the inundated areas of the Three Gorges Reservoir involve 2 cities, 11 county seats and 140 towns. The population of the cities and towns under the inundated line totals 393 000 peop... At the normal pool level of 175 m, the inundated areas of the Three Gorges Reservoir involve 2 cities, 11 county seats and 140 towns. The population of the cities and towns under the inundated line totals 393 000 people(1985). These affected cities and towns will be rebuilt by means of moving backward to a higher elevation or to other places.The cities and towns to be relocated are the regional political, economic and cultural centres, and serve as traffic complexes and places of goods gathering and distributing. They are also the seats containing some important cultural relics and historic sites, landscaping and scenic spots. The relocation of the cities and towns will generate far-reaching impacts on regional socio-economy and environment. The unreasonable excavation and fill or the improper protective measures adopted may induce land slide,collapse and soil loss. The ruins and wastes will affect the water quality in the early period of impoundment of the Three Gorges Reservoir. A large demand of timber may result in forest fall excessively in the local area of the reservoir region, and lower forest and vegetation coverage rate may lead to soil loss. The relocation of the cities and towns will increase urbanization in reservoir, improve the infrastructure, enhance their location function and economic radiation capacity. The negative impact will reach its maximum during relocation peak period, and the environmental quality will be progressively improved with the recovery of the functions of the relocated cities and towns and the implementation of environmental protection measures. Finally, the negative impact will be offset, and the negative impact will be changed into positive environmental elements. 展开更多
关键词 ENVIRONMENTAL impact RELOCATION of CITY and town ENVIRONMENTAL protection TGP
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Planning of Small Cities and Towns in Northwest China Based on New Urbanization Concepts
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作者 CHEN Huailu JIA Rui TANG Yongwei 《Journal of Landscape Research》 2013年第10期4-6,共3页
Construction and development of small cities and towns is signifi cant for promoting economic and social development,and solving issues concerning "agriculture,rural areas and peasants". In view of the rapid... Construction and development of small cities and towns is signifi cant for promoting economic and social development,and solving issues concerning "agriculture,rural areas and peasants". In view of the rapid development of small cities and towns,confl icts and problems in the planning and construction of the small cities and towns in northwest China have emerged and brought negative infl uence on their healthy and sustainable development. On the basis of analyzing scientifi c connotations and construction needs of new urbanization,development of northwest China,and reviews on planning of small cities and towns in this region,planning paths against the background of new urbanization were explored. 展开更多
关键词 New URBANIZATION NORTHWEST China SMALL cities and towns PLANNING path
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Problems in the Development of Small Cities and Towns in West China and Countermeasures: A Case Study of Luzhou City, Sichuan Province
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作者 ZHOU Xuehong 《Journal of Landscape Research》 2016年第5期17-19,共3页
New urbanization targets at coordinated urban-rural development, and construction of ecological and livable environment, it is the foundation for breaking urban-rural dual structure of China and promoting the agricult... New urbanization targets at coordinated urban-rural development, and construction of ecological and livable environment, it is the foundation for breaking urban-rural dual structure of China and promoting the agricultural modernization. Small cities and towns as carriers of new urbanization have already become important paths of realizing new urbanization and solving problems concerning 300 million peasants in China. Considering the requirements of new urbanization, this paper took Luzhou City in Sichuan Province for example to explore development path suitable for small cities and towns in west China and gave pertinent suggestions. 展开更多
关键词 New urbanization West China Small cities and towns Development path
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Study on Landscape Character Assessment System in Small Cities and Towns
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作者 TANG Qi 《Journal of Landscape Research》 2014年第1期17-19,共3页
The paper elaborated landscape character assessment system of small cities and towns, defi ned the assessment objects, application range of assessment fruits, specifi c evaluation methods and procedures. Taking Gexian... The paper elaborated landscape character assessment system of small cities and towns, defi ned the assessment objects, application range of assessment fruits, specifi c evaluation methods and procedures. Taking Gexianshan Town in Pengzhou City for example, technical means for assessing landscape characters were adopted for the landscape assessment, which provided professional support for the future planning. 展开更多
关键词 Small cities and towns Landscape characters EVALUATION
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Survey and Analysis of Community Care Service in Cities and Towns from the Perspective of Internet
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作者 Jiaxu HUANG Jiaqi LI +2 位作者 Yanfei LI Ying WANG Shuli SONG 《Asian Agricultural Research》 2020年第9期33-34,共2页
With the aging of the social population,community care has become another important care model between home care and institutional care.In order to fully understand the social cognition and demand of"Internet+com... With the aging of the social population,community care has become another important care model between home care and institutional care.In order to fully understand the social cognition and demand of"Internet+community care",the project team conducted a questionnaire survey in accordance with the research objectives.The survey concluded that the public are still dependent on the traditional care,and do not know much about"Internet+community care",but are willing to try."Internet+community care"can not only enrich and innovate the care model,but also effectively solve the problems of limited pension resources and mismatch between supply and demand.It is conducive to promoting the realization of high-quality and efficient services for the aged. 展开更多
关键词 Internet+ cities and towns Community care
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Full scale application of combined SBF-AS process for municipal wastewater treatment in small towns and cities in China
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作者 刘硕 王宝贞 +2 位作者 王琳 丁永伟 周宏均 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第3期347-353,共7页
The combined submerged biofilm ( SBF)-activated sludge (AS) process for treatment of municipal wastewater in a small city in China is described in this paper. The process exhibited high removal efficiencies for ca... The combined submerged biofilm ( SBF)-activated sludge (AS) process for treatment of municipal wastewater in a small city in China is described in this paper. The process exhibited high removal efficiencies for carbonaceous substances, nitrogen and phosphorus which mainly took place in the combined SBF-AS biore- actor. The SBF-AS bioreactor was divided into pre-anoxic, anaerobic, anoxic and aerobic zones from inlet to outlet, in which fixed biofilm carriers were packed. Excellent performance had been obtained under normal operating conditions in more than one year of operation in Dong' e municipal WWTP, Shandong province, with mean removal efficiencies of BOD5 93.4%, COD 88%, SS 92%, NH4 - N 82. 1%, TP 75% and TN 66.7%, and quite high effluent quality such as BOD5 6 to 10 rag/L, COD 20 to 40 rag/L, SS 5 to 10 rag/L, TN 10 to 20 rag/L, NH4 - N 4 to 8 mg/L and TP 0. 6 to 1.0 mg/L. The effluent was reused multi-purposely, such as toilet flushing, green belt watering and artificial lake pounding. Simultaneous nitrification and denitrification took place due to the DO gradient in biofilm in aerobic zone of the SBF-AS bioreactor, which made TN removal efficiency improved remarkably in system. Some activated sludge was returned from final clarifiers to the bioreactor for phosphorus removal. The process had the advantages of low investment and low operational/ maintenance (O/M) costs, low sludge yield and was preferably employed in small towns and cities. 展开更多
关键词 wastewater treatment plant (WWTP) in small cities and towns combined submerged biofilm-activated sludge (SBF-AS) process simultaneous nitrification and denitrification (SND) DO gradient phosphor-us removal
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Discussion on the Problems and Path of Characteristic Town Construction in Underdeveloped, Resource-Based Cities: A Case Study of Ganzhou City
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作者 HUANG Cuiping HU Xiying 《Journal of Landscape Research》 2018年第6期56-59,共4页
Characteristic towns as a characteristic industry are one of the important measures of China's new urbanization strategy. The construction of characteristic towns in different regions needs to pay attention to reg... Characteristic towns as a characteristic industry are one of the important measures of China's new urbanization strategy. The construction of characteristic towns in different regions needs to pay attention to regional differentiation. At present, the research on characteristic towns focuses on the developed the developed central and eastern regions. There are still few studies on characteristics towns in underdeveloped areas. Starting from the analysis of the concept of the characteristic town, this paper sorted out the general situation of the construction of characteristic towns in China based on the existing research literature, selected Ganzhou City for research, pointed out there were "two restrictions and two singles" in the construction of characteristic towns in Ganzhou City, and clarified that the characteristic towns of Ganzhou City should adhere to the construction path of "two characteristics and two integrations", with a view to providing a useful reference for in Ganzhou City the construction of characteristic towns, industrial transformation and upgrading, and poverty alleviation in such underdeveloped, resource-based cities. 展开更多
关键词 CHARACTERISTIC town UNDERDEVELOPED RESOURCE-BASED CITY Construction PATH
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Analysis on the Building of Chengdu's City Brand as“Three Cities and Three Capitals”-Taking Jiezi Ancient Town as an Example
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作者 Jianwei Guo 《Proceedings of Business and Economic Studies》 2021年第4期235-237,共3页
"Three Cities and Three Capitals"is a city brand that Chengdu has been vigorously building.Based on the analysis of the brand construction background,the brand building of Jiezi Ancient Town,and the problems... "Three Cities and Three Capitals"is a city brand that Chengdu has been vigorously building.Based on the analysis of the brand construction background,the brand building of Jiezi Ancient Town,and the problems existing in the current brand building of Jiezi Ancient Town,this paper puts forward suggestions,including reconstruction of cultural resources,building an industrial framework,and giving full play to the role of market entities,so as to provide guidance for the cultivation of the brand characteristics in the ancient town and better shape the city brand of"Three Cities and Three Capitals"in Chengdu. 展开更多
关键词 Jiezi Ancient town Chengdu Three cities and Three Capitals City brand
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Metropolis or City?Metropoles and Cities with Their Citizens 被引量:1
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作者 Christian Sallenave 《Journal of Civil Engineering and Architecture》 2019年第1期16-22,共7页
Through the specific examples of two very different metropoles,not compared but evoked,New York City and Bordeaux Métropole,since globalization from mid-19th and to the beginning of the 21st century,we can observ... Through the specific examples of two very different metropoles,not compared but evoked,New York City and Bordeaux Métropole,since globalization from mid-19th and to the beginning of the 21st century,we can observe how metropolitan flows acceleration change cities and citizens heritages.How can we achieve metropolization and globalization of our cities? 展开更多
关键词 town CITY metropoles metropolization globalization flows acceleration urban SPRAWL melting pot works CROSSBREEDING civil engineering and architecture PLURAL and singular metropolitan space-time
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Comprehensive Reform and Construction of Small Towns:A Case Study of Ningde City
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作者 LIN Wenjie HUANG Heliang 《Journal of Landscape Research》 2016年第6期99-101,106,共4页
Taking Ningde City as an example,this paper analyzed current situations of construction and comprehensive reform of small towns.It further discussed existing problems and causes in the construction and comprehensive r... Taking Ningde City as an example,this paper analyzed current situations of construction and comprehensive reform of small towns.It further discussed existing problems and causes in the construction and comprehensive reform of small towns.Finally,it came up with pertinent recommendations,in the hope of providing some valuable references for construction and comprehensive reform of small towns in Ningde City. 展开更多
关键词 Small towns Comprehensive reform Ningde City FINANCING DIVIDENDS Institutional guarantee
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Analysis of Evolution Features of Villages into Small Towns under the Influence of Tourism:A Case Study of Xizhou Town of Dali City
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作者 WANG Yinyin BI Yanxia +1 位作者 ZHANG Youcai CHE Zhenyu 《Journal of Landscape Research》 2017年第1期25-29,36,共6页
Influence of tourism on society,economy and culture of traditional villages is shown gradually by physical form,promoting the evolution of villages into small towns. Based on the perspective of morphology,the changing... Influence of tourism on society,economy and culture of traditional villages is shown gradually by physical form,promoting the evolution of villages into small towns. Based on the perspective of morphology,the changing features of physical and social spatial form of three typical regions(Xizhou Village and its surrounding areas,Zhoucheng Village and its surrounding areas,and Renliyi Village) in Xizhou Town of Dali City during 1985-2010 were analyzed; the roles of tourism during the evolution process of villages into small towns were discussed; the evolution features of villages into small towns were summarized. It is concluded that tourism and economy related to tourism have played important roles in the enhancement of cohesion degree of an aggregation nucleus and have promoted the evolution process of vilages into small towns. 展开更多
关键词 Vilages Morphological evolution Influence of tourism Tourism urbanization Xizhou town of Dali City
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中国式现代化进程中的乡村人口:问题、挑战及应对——与城市、镇的比较分析 被引量:1
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作者 谢永飞 《江西师范大学学报(哲学社会科学版)》 CSSCI 北大核心 2024年第3期33-46,共14页
乡村人口问题给中国式现代化带来五大挑战:劳动年龄人口减少可能造成乡村产业发展劳动力资源不足,教育水平与城市的差距扩大可能导致乡村高质量发展人才短缺,男性婚姻挤压日渐突出可能引发乡村婚姻与家庭建设问题,老龄化进程加快可能加... 乡村人口问题给中国式现代化带来五大挑战:劳动年龄人口减少可能造成乡村产业发展劳动力资源不足,教育水平与城市的差距扩大可能导致乡村高质量发展人才短缺,男性婚姻挤压日渐突出可能引发乡村婚姻与家庭建设问题,老龄化进程加快可能加剧乡村养老困境,文化建设人才不足可能影响乡村精神文明建设。应对这些挑战,可从以下方面着手:有序引导外出农民工回流、稳步推进农业现代化,提高乡村人口教育水平、盘活用好现有人才,促进乡村性别平等、提升婚姻家庭幸福感,扩大乡村养老服务供给、提升养老服务质量,动员多方资源、推进乡村精神文明建设。其政策启示是:中国式现代化任重道远,其短板是农业农村现代化;推进中国式现代化,需要探索和创新乡村的省域实践,也需要关注镇这一区域层级。 展开更多
关键词 乡村人口 中国式现代化 挑战 应对 城市、镇、乡村比较
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2021版国家卫生城镇标准——病媒生物控制考核指标的特点
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作者 辛正 王东 《中华卫生杀虫药械》 CAS 2024年第5期405-409,共5页
2021版国家卫生城镇标准中病媒生物控制考核指标由2014版的45条缩减为14条,资料评估为主的条款由37条缩减为4条,现场评估为主的条款由8条调整为10条,评估工作导向更为注重现场评估。从资料缩减,底数溯源;拨冗减负,合二为一;生态为轴,关... 2021版国家卫生城镇标准中病媒生物控制考核指标由2014版的45条缩减为14条,资料评估为主的条款由37条缩减为4条,现场评估为主的条款由8条调整为10条,评估工作导向更为注重现场评估。从资料缩减,底数溯源;拨冗减负,合二为一;生态为轴,关注重点;综合评估,注重管理4个方面对其修订原则和考核指标特点进行了解读,提出效果保障、标准精简、基层减负是今后方向。 展开更多
关键词 国家卫生城镇 病媒生物控制 标准
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基于GIS技术的山地小城镇雨洪灾害风险评估
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作者 栾春凤 时兆慧 +1 位作者 赵人镜 崔逸文 《人民黄河》 CAS 北大核心 2024年第5期56-62,67,共8页
在快速城镇化和工业化背景下,城市的自然灾害风险日益暴露,尤其是雨洪灾害问题日益突出。针对巩义市近年来不断发生的洪涝灾害,基于自然灾害风险评估理论,构建以致灾因子危险性、孕灾环境孕险性、承灾体易损性、防灾减灾能力为评价因子... 在快速城镇化和工业化背景下,城市的自然灾害风险日益暴露,尤其是雨洪灾害问题日益突出。针对巩义市近年来不断发生的洪涝灾害,基于自然灾害风险评估理论,构建以致灾因子危险性、孕灾环境孕险性、承灾体易损性、防灾减灾能力为评价因子的雨洪灾害风险模型,共选取14个指标进行定量分析,运用SCS模型和GIS空间分析功能,最终得出巩义市雨洪灾害综合风险区划图。结果表明:巩义市米河镇、回郭镇、芝田镇、孝义街道等地区致灾因子危险性较大;北部、西部和东部包括河洛镇、孝义街道、回郭镇、芝田镇、米河镇等孕灾环境孕险性较高;西部和中部承灾体易损性较大,包括回郭镇、芝田镇、站街镇等;北部整体防灾减灾能力较强,包括站街镇、紫荆路街道等地区。综合来说,巩义市雨洪灾害总体风险等级较高,高风险区主要分布在中部偏北和西部,呈带状分布。 展开更多
关键词 雨洪灾害 风险评估 GIS SCS模型 山地小城镇 巩义市
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基于MIKE FLOOD模型的平原水网地区内涝治理效果模拟研究
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作者 侯俊 陈诚 +3 位作者 郑玉磊 丁伟 时间 苗令占 《水利水电科技进展》 CSCD 北大核心 2024年第6期41-47,70,共8页
为科学评估平原水网地区内涝治理效果,以昆山市淀山湖镇为研究对象,基于MIKE FLOOD模型,耦合一维河网、二维地形和一维管网模拟了平原水网地区城镇内涝情况。采用实测降雨数据对模型进行了率定和验证,并模拟了2年一遇、5年一遇、10年一... 为科学评估平原水网地区内涝治理效果,以昆山市淀山湖镇为研究对象,基于MIKE FLOOD模型,耦合一维河网、二维地形和一维管网模拟了平原水网地区城镇内涝情况。采用实测降雨数据对模型进行了率定和验证,并模拟了2年一遇、5年一遇、10年一遇和20年一遇4种重现期降雨条件下现状和治理后的最大淹没水深。模拟结果表明:20年一遇降雨条件下内涝范围变化明显,其余3种重现期降雨条件下内涝范围变化不明显;对于降雨重现期较小条件下的城市内涝治理,应优先考虑管网改造,而针对短历时的强暴雨事件,应优先考虑海绵城市设施建设改造;为了应对不同重现期、短历时降雨造成的城市内涝风险,应在管网改造的基础上配合海绵城市设施建设改造。 展开更多
关键词 平原水网 内涝治理 海绵城市设施 MIKE FLOOD模型 淀山湖镇
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黄土高原河谷城镇“川—沟”融合单元发展路径研究
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作者 田达睿 卫雨欣 +1 位作者 白钰 席佳榕 《规划师》 CSSCI 北大核心 2024年第7期104-111,共8页
通过分析黄土高原河谷城镇独特的城乡关系与发展困境,认为川道与次沟空间结构一体化、功能结构差异化发展是振兴黄土高原丘陵沟壑区的重要突破口,由此提出“川—沟”融合单元的概念内涵与划定方法。以榆林市绥德县为例,打破镇域行政边... 通过分析黄土高原河谷城镇独特的城乡关系与发展困境,认为川道与次沟空间结构一体化、功能结构差异化发展是振兴黄土高原丘陵沟壑区的重要突破口,由此提出“川—沟”融合单元的概念内涵与划定方法。以榆林市绥德县为例,打破镇域行政边界和小流域镇村体系,基于川道城镇和次沟乡镇的空间关联关系划定10个融合单元,并从用地形态结构、产业经济地理、服务设施配置等方面对融合单元的空间构型、功能类型和服务水平进行剖析,探讨川道与次沟协同视角下以融合单元为抓手推动黄土高原河谷城镇高效发展和管控治理的新路径。 展开更多
关键词 “川—沟”融合单元 城乡发展路径 黄土高原丘陵沟壑区 河谷城镇 榆林市绥德县
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喀斯特山区城镇村用地时空演变特征分析——以七星关区为例 被引量:1
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作者 孙耀鹏 周忠发 +1 位作者 孙建伟 赵宇鸾 《测绘与空间地理信息》 2024年第3期3-7,共5页
以七星关区为例采用GIS空间分析、核密度和年变化率等方法分析喀斯特山区城镇村用地时空演变特征。结果表明:七星关区城镇村用地大范围演变且时序性和空间差异性特征显著,其中城市用地和中心城区及其东部地区演变最为剧烈;七星关区城镇... 以七星关区为例采用GIS空间分析、核密度和年变化率等方法分析喀斯特山区城镇村用地时空演变特征。结果表明:七星关区城镇村用地大范围演变且时序性和空间差异性特征显著,其中城市用地和中心城区及其东部地区演变最为剧烈;七星关区城镇村用地时空演变存在较强的空间自相关性,属于强集聚分布格局,演变热点区表现为鲜明的工业和开发区建设指向、冷点区表现为明显的自然地理环境指向。研究成果为喀斯特山区城乡空间重构和国土空间规划提供科学支撑和决策依据。 展开更多
关键词 城镇村用地 时空演变 喀斯特山区
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基于测雨雷达与地面雨量站的山洪模拟及灾害预警时效分析 被引量:1
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作者 孔坚 许泽星 +1 位作者 舒毅 王协康 《中国防汛抗旱》 2024年第5期27-31,44,共6页
传统暴雨山洪预警主要依靠地面雨量站降雨数据,易出现虚警漏警或难以满足预警时效的情况。流域面雨量实时监测和前移山洪预警响应时间是满足山洪灾害防御目标的重要技术手段,测雨雷达技术的应用也为山洪灾害防治提供了新的预警思路。以... 传统暴雨山洪预警主要依靠地面雨量站降雨数据,易出现虚警漏警或难以满足预警时效的情况。流域面雨量实时监测和前移山洪预警响应时间是满足山洪灾害防御目标的重要技术手段,测雨雷达技术的应用也为山洪灾害防治提供了新的预警思路。以湖北柳林镇2021年8月12日暴雨山洪事件为例,采用模块化分布式水文模型(MDHM)模拟山洪过程并进行预警分析,对比基于测雨雷达、地面雨量站降雨输入条件下的灾害预警时效,评估两种降雨数据源下山洪预警的有效性和可靠性,结果表明测雨雷达预报降雨结合水位陡涨率预警法能显著提高预警效果,可为暴雨山洪防灾减灾提供技术支撑。 展开更多
关键词 山洪灾害 测雨雷达 山洪模拟 雨量站 预警时效 湖北随州柳林镇
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