Preliminary Analysis on Environmental Impact of Relocation of Cities and Towns in the Three Gorges Reservoir Region

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.

Problems in the Development of Small Cities and Towns in West China and Countermeasures: A Case Study of Luzhou City, Sichuan Province

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.

Survey and Analysis of Community Care Service in Cities and Towns from the Perspective of Internet

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.

Influence of seismicity parameter uncertainty on seismic hazard estimation of cities and towns

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.

Characteristics and Driving Forces of Spatial Expansion of Oasis Cities and Towns in Hexi Corridor, Gansu Province, China

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.

Planning of Small Cities and Towns in Northwest China Based on New Urbanization Concepts

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.

Discussion on the Problems and Path of Characteristic Town Construction in Underdeveloped, Resource-Based Cities: A Case Study of Ganzhou City

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.

Full scale application of combined SBF-AS process for municipal wastewater treatment in small towns and cities in China

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.

Analysis on the Building of Chengdu's City Brand as“Three Cities and Three Capitals”-Taking Jiezi Ancient Town as an Example

"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.

Discovery of Cinnabar in Soils in Hg Anomalous Zones in City and Town Areas and Their Surroundings and Its Significance

As a result of systematic study on heavy minerals in soils at city and town areas and their surroundings, cinnabar was discovered for the first time in areas of Hg anomalies in China, and it was found that the distribution of cinnabar was basically coincident in scope with that of Hg anomalies, showing that Hg anomalies were'closely related to cinnabar. This finding provides a theoretical basis for a verification of Hg anomalies in soils in city and town areas and their surroundings, as well as evaluation of its ecological effects, and is significant to revealing the occurrence modes and origin of Hg in soils.

Metropolis or City?Metropoles and Cities with Their Citizens

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?

Comprehensive Reform and Construction of Small Towns:A Case Study of Ningde City

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.

Analysis of Evolution Features of Villages into Small Towns under the Influence of Tourism:A Case Study of Xizhou Town of Dali City

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.

Study on Landscape Character Assessment System in Small Cities and Towns

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.

Russian architectural town-planning traditions and innovations in the Far East in the second half of the XIX-the beginning of the XX centuries

The establishment on the Far East of the orthodox Church and cultural stereotypes of the traditional Russian city occurred through active church building. The temples of the Far Eastern cities by its position in urban environment played a role of the basic exponents of the spiritual-state ideals of Russia. Ussumption cathedrals in Khabarovsk and Vladivostok, Nikolsky cathedral in Nikcolsk-Ussurisk, Shadrinsky cathedral in Blagoveshchensk, Saint-Nikolaevsky at Russiand iplomatic mission in Seoul and other orthodox temples of the last thirty years of the XIX-the beginning of the XX-th centuries inherited ancient Russian tradition and were designed in the Byzantian style, style of the Moscow XVII century architecture, in Russian style. The ideas of ″the orthodox, the autocracy and the nationality″ in town-planning are expressed also in devotions of temples and names of new settlements. For example, a large number of temples is devoted to Saint Nicholas. Only in the Primorye Territory they are about 20. Harbin’s Saint-Nikolaevsky cathedral also in a name Nicholas. Harbin’s the Sofia church is devoted to a great symbol Ancient Russia and Russian Empire - church of Saint Sofia in Constantinople. The general plans of settlements and cities of the Far East of the second half of the XIX and boundary XIX-XX centuries were realized by two leading directions of town-planning of Russia: the first is based on the norms of regular town-planning, the second is one connected with the realization of the city - garden concept. The priority remains for classicismical tradition. At the same time, the general plans of Harbin, Dairen realized the innovative idea of the time-the concept of city-garden. On the Russian Far East social town-planning ideas of the city -gardens in a certain measure were embodied in 1910-s in the project of Alexseevsk town; Anutovsky country settlement on Ocean station near Vladivostok, later it was officially named-Garden-City; in a settlement for the railway servicemen on Nikolskay station of the Ussuriskay railway and others. Russian architectural town-planning tradition was enriched by new understanding of the social and town-planning purposes, realized in cities of the Far East in the end of the XIX-the beginning of the XX centuries.

“City-Scene” Characteristics and Optimization Strategies Research on Three Gorges Reservoir Area of the Post-Three Gorges Era

In the long-term symbiotic evolution process,the town areas along the Yangtze River and its natural and cultural landscapes have presented a sound "city-scene" landscape form. But with the implementation of the Three Gorges project,the town relocation as well as the flooding in the natural and human landscape area,the original harmonious "city-scene" pattern started to collapse and fell into the situation of "fragmentation" and "islanding". The differentiation between city and landscape,uncoordinated scale and fractured urban context become pressing issues that affect the integral form optimization of the town areas. This paper aims at responding to the call of the government about proceeding the construction of the Yangtze River economic belt under the ecological and green strategy and seeking an attuned "cityscene" relationship of the town area. Based on the analysis of the dynamic evolution of the "city-scene" relationship,the paper also pointed out that the urban construction around the reservoir area in the postThree Gorges era was the key stage of "scene-city" integration and symbiosis while the maintenance of scenery pattern,the harmony of space scale and the protection of living culture should be applied as the vital strategies.

Research on Vegetation Recovery of Mountainous Parks in City-and-town Concentration Areas in China

Based on the analysis of features and problems of green lands in mountainous parks in towns concentration areas,the paper has illustrated the significance for vegetations'recovery.By taking Tashan Park in Neijiang City for example,it has investigated the eco-environment and vegetations of this park.The results show that its terrain is precipitous,eco-environment is weak,slope vegetation is less,rocks'exposing rate is high and community structure is simple.In view of the survey results,it has proposed two methods for vegetation recovery that are natural recovery and artificial recovery.In particular,it has explored how to conduct vegetation recovery on green lands of different gradients of slopes by using plants'selection and community disposition.

Implications for Cultural Landscape in a Chinese Context: Geo-analysis of Spatial Distribution of Historic Sites

The protection of historic sites, especially their relationship with urban development, has become a worldwide issue, both in developed and developing countries. In the context of rapid urbanization in China, the realistic compatibility between urban construction and the protection of historic sites is always a key research topic. In this study, first, to comprehend their spatial distribution patterns, 828 historic sites throughout the country are selected based on certain criteria. Then, we conduct quantitative research using GIS software, adopting indicators that include Nearest Neighbor Index, Gini Coefficient, and Geographic Concentration Index to analyze the spatial characteristics of historic sites on the three levels of city, province and nation. The results indicate that the spatial distribution of the different types of historic sites is an agglomeration on the nationwide scale, most of which is located in the regions of the Pearl(Zhujiang) River Delta, Yangtze(Changjiang) River Delta and Beijing-Tianjin Region. Because the majority of historic sites are located within approximately 10 km of the downtown area, a certain pattern has emerged, showing that the larger cities own more historic areas, which are in a more incomplete state of preservation, indicating the fragmentation of heritage spaces. The formation mechanism of the historic sites' distribution pattern is based on the conditions of the cities/towns as well as the bid-rent theory.

TOWARD ESTABLISHING THE CONCEPT OF PHYSICAL URBAN AREA IN CHINA

This paper makes a detailed analysis of the vanous drawbacks of the continued use of adwhnistrative area in dividing urban and rural areas in spite of the serious discrepancies between urban admnistrative boundaries and the 'real' urban space in China. The autiors believe that to solve this problem, it is essential to establish the concept of physical urban area with both adaptability to Chinese situation and intemational comparability and use it as the basis of urban-rural division and statistics. It is proposed that physical urban area should be defined in terms of prescribed minimum population scale, dngee of nonaghculturalization and population density.Based on extensive substantive research and a classifiotion of the space figurations of Chinese cities and towns, a new scheme to classify physical urban areas is proposed.

Protection and Construction Measures of Wild Animals' Habitats in Ecological Green Land Design in Town-and-City Concentration Areas of China

Town-and-city concentration area is confronted with ecological degeneration due to the expansion of urbanization,and enriching urban bio-diversity is conducive to the improvement of ecological function of urban green system.The paper has studied how to increase urban bio-diversity by making use of urban green lands for protection and construction of wild animals' habitats,and proposed the significance and theoretical idea for protection and construction of wild animals' habitats.By taking ecological green lands design in Qinglongchang of Chengdu City for example,it has analyzed the current situation of animals' diversity;proposed to plan corridor,construct biological channel and provide multiporous habitats;listed plants' selection and collocation mode;and finally illustrated how to set artificial facilities for attraction of animals.It hopes to provide a reference for the design of ecological green lands in cities advocating the harmonious development of living environment and natural environment.