Analysis of Characteristics and Meteorological Influencing Factors of Air Pollution in Luojiang District,Deyang City

Based on the monitoring data of ambient air quality and meteorological observation data,the characteristics and meteorological influencing factors of air pollution in Luojiang District of Deyang City from 2018 to 2022 were analyzed.The results show that from 2018 to 2022,the main air pollutants affecting the air quality of Luojiang District of Deyang City were PM_(2.5) and PM_(10),and the primary pollutant on heavy pollution days was basically PM_(2.5).PM_(2.5) and PM_(10) pollution showed obvious seasonal differences,and PM_(2.5) concentration exceeded the limit mainly in spring and winter,among which it was the most serious in early spring,especially in January and February,followed by December.PM_(10) exceeding the standard had a high seasonal correlation with PM_(2.5) exceeding the standard,mainly in spring and winter,among which it was the most serious in winter,especially in December,followed by January.PM_(2.5) and PM_(10) pollution showed an overall weakening trend.PM_(2.5) and PM_(10) concentration were closely related to meteorological factors such as temperature,relative humidity,wind speed,precipitation and air pressure,and were mainly affected by rainfall.

The Application of Old City Planning Based on the Concept of Smart Cities: A Case Study of Wanli District, Nanchang

The impact of a smart city as one of the new urban forms on the city is still in the exploratory stage. Therefore, it is necessary to fully analyze the impact of a smart city in the urban planning field, and actively explore the planning ideas and methods that are compatible with the planning and renovation of the old city. On the basis of applying the concept of smart cities, Wanli District of Nanchang City has paid attention to the optimization of urban spatial structure, focused on the development of tourism industry, built an intelligent transportation system with priority to public transport, and improved infrastructure construction, in order to provide guidance for the wisdom update of the old city.

A Guide to the Open Cities(Counties,Cities and Districts)of Sichuan Province

Administrative divisions: ChengduMunicipality:Qingyang District, Jinjiang District,Wuhou District, Chenghua District, JinniuDistrict, Longquanyi District, QingbaijiangDistrict, Jintang County, Shuangliu County,Wenjiang County, Chongzhou City, XinduCounty, Dujiangyan City, Qionglai City,Pixian County, Pujiang County, XinjingCounty, Dayi County, Pengzhou

The Differences between County,County-level City and Municipal District in the System of Administrative Divisions in China

Administrative division is an important means of political power reorganization and management,resource integration and optimal allocation,which profoundly shapes the spatial layout of urban development in China.To clarify and compare differences between counties,county-level cities and municipal districts is the primary premise for the study of administrative division and urban development.This paper analyzes the institutional differences between counties and county-level cities,as well as counties,county-level cities and municipal districts,from the aspects of organizational structure,urban construction planning,land management,finance,taxation and public services.The research shows that the establishment of counties,county-level cities and municipal districts adapt to different levels and stages of economic and social development,and the conversion from county to county-level city and the conversion from county(or county-level city)to municipal district are both important transformation ways to change their administrative systems,which has different management system and operation pattern.At the same time,the transformation of county-level administrative region is also a“double-edged sword”,we should think about the administrative system as a whole to decide whether it should be adjusted,and effectively respond to the actual needs of local economic and social development.

RS and GIS-based Analysis on Dynamic Changes of Landscape Pattern on Urban-rural Fringe——A Case Study of Licheng District, Jinan City of China

By using GIS, RS and landscape ecology, LandsatTM (1993 and 2009) and ETM (2001) remote sensing images of Licheng District of Ji’nan City, Shandong Province were interpreted, and dynamic changes of landscape pattern in the district were analyzed at the levels of class and landscape. The results showed that during the 16 years the landscape pattern in the district had changed significantly. (a) From the perspective of patch category, areas of arable land, woodland and grassland decreased unceasingly, and arable land accounted for the largest reduction from 488.15 km 2 in 1993 down to 324.37 km 2 in 2009, witnessing a reduction rate of 33.56%. But the patch quantity and fragmentation increased, patch connectivity reduced. Spatial pattern of construction land expanded and its area witnessed a significant increase of 147.05%. Patch cohesion index increased and connectivity grew better. (b) From the perspective of overall landscape, patch quantity, contagion and perimeter-area fractal dimension decreased, patch shape became simple, the Shannon’s diversity index, Shannon’s evenness index and splitting index increased, landscape heterogeneity rose. With the rapid social and economic development, landscape pattern will be more and more influenced by human behaviors

Effects of Different Land Use Patterns on Soil Microbial Quantity and Activity in Hongta District,Yuxi City

[Objective] This study aimed to investigate the effects of different land use patterns on soil ecological environment. [Method] Total three representative land use patterns （corn field, cherry tree land, wood land） were selected from Hongta District, Yuxi City, and under these three patterns, soil microbial quantity and activity were studied. [Result] Under the three land use patterns, soil microorganisms were domi- nated by bacteria; soil microbial quantity ranked as wood land＇s〉cheery tree land＇s〉 corn field＇s; and total microbial activity, catalase activity and urease activity all ranked as cherry tree land＇s〉wood land＇s〉corn field＇s. [Conclusion] Soil microbial activity and functions are related to farmland management measures, as well as land use pattern and soil nutrients.

Changes of Wetland Landscape Pattern in New Coastal District of Tianjin City

With the wetland landscape in New Coastal District of Tianjin City as the chief study objective and based on the remote sensing and non-remote sensing data of ETM/TM with 1999-2007 as the time scale and the new administrative region of New Coastal District as the space (scale) scope, this paper conducted the study on the landscape pattern change. The results showed that the natural wetland and agricultural land tended to decrease, while the saltern, maricultural areas and construction land increased apparently. The overall landscape shape tended to develop in simplification and regulation and with the development of population and social economy, human’s intervention to the landscape was getting improved.

System Planning of Green Landscapes from the Perspective of Regulatory Planning—A Case Study of Regulatory Detailed Planning of Wenfeng District in Nanchong City,Sichuan Province of China

By taking the regulatory detailed planning of Wenfeng District in Nanchong City for example,public green spaces,protective green spaces and ecological green spaces are planned systematically on the basis of "protective,needs-oriented,systematic and characteristic" principles.Landscape system structure of "one belt,one surface,four axes,five districts and multiple points" was analyzed,concrete designs of landscape infiltration surface,landscape axis and style division elaborated.The way of integrating landscape system planning and current situation was discussed in the image construction of new urban district to co-construct characteristic urban images,realize the coordination of city,environment and culture,optimization of urban eco-environment benefits,orderly and sustainable development of urban ecological conditions.

Study on Conceptual Planning of Group Landscapes in Urban Core Areas—A Case Study of Conceptual Landscape Planning of the Core Area in Shuangsong Group,Wanzhou District of Chongqing City,China

The planning site was divided into a spatial structure of"one center,one corridor,two axes,two belts and three communities"and traffic system designed to a 3-grade road system of"artery,secondary artery and by-pass".Meanwhile,a 3-ring structure of the planning site was constructed:diffusion waterfront landscape belt,waterfront pathway and core eco-green island.Finally,the planning concepts for major ecological constructions were given.This study tried to explore the group eco-landscape pattern in urban core areas so as to provide a strategic instruction for the regional sustainable development.

Urban Landscape Construction Guided by the Landscape City——a Case Study of Wanli District, Nanchang City, Jiangxi Province

Mountains and waters serve as important elements for urban spatial mor-phology, structure and eco-environment. Since scientist Qian Xuesen proposed the concept of landscape city, it has been an effective way for urban development in case of thousand-city in the same appearance. In the study, we analyzed the con-cept, connotation and approaches and proposed the ways to landscape city.

A STUDY ON LANDSCAPE MOSAIC STRUCTUREIN URBANRURAL AREA IN NORTHWESTOF CHINA WITH RS AND GIS- A Case Study of Xigu District in Lanzhou City

ABSTRACT: At the study area of Xigu District in Lanzhou City, using RS & GIS as tools we apply Diversity, Dominance, Fragmentation , Isolation and so on to study the quantitative, fractal and spatial characters of landscapes’ structures in the four sub-regions divided by the morphological features. Using the Fractal Theory to establish the fractal structure models, we analyze the complexity and stability of various landscapes’ distribution with fractal dimension value. The spatial distribution characteristics of landscape mosaic structure are also expounded. At the end of the paper we discuss the relevant problems on the main factors which control and effect on the spatial pattern of landscapes as well as on landscape optimization and management.

Urban Design Strategy Research Based on the Concept of Sponge City: A Case Study of Renbei District in Chengdu

Cities are currently confronted with many urban problems, such as water shortages, water quality pollution, floods, and the loss of habitats of aquatic organisms, and badly in need of a more comprehensive solution. In this context, the concept of "sponge city" is proposed. This paper, based on the theory of sponge city and low impact development, elaborated the origin, development, connotation, and construction method of "sponge city" concept. In this paper, the urban design scheme of Renbei District in Chengdu was taken for example to analyze the geographical environment and climate characteristics of Chengdu and explain the formation and verification of the scheme. It is considered that the "sponge city" is different from the traditional urban infrastructure. It is essentially an ecological approach. Its core is to build a cross-scale urban water ecological infrastructure to comprehensively solve the prominent water-related problems of urban and rural areas in China.

Color Planning and Design of Main Urban Districts of Xuzhou City

Through investigating colors of Xuzhou City, combining with color planning practices in domestic and foreign cities, current colors and characteristics of main urban districts of Xuzhou City were analyzed, overall orientation and design concept of city color were explored, the overall framework of regional building colors and the zoning planning were proposed, to give new concepts for the future city color planning and design.

Establishing the Method for Assessing Flood Vulnerability in Ho Chi Minh City, Vietnam A Case Study in District 6

Urban flooding has impacted siginficantly on people＇s living： economic development, environmental pollution, etc.. It has been the serious problem of many cities in file world, especially in urban areas in developing countries because urbanization is too fast but lack of adaptive management planning and infrastructure. In Vietnam, the big cities, such as HCM （Ho Chi Minh） City, Hanoi, etc. have also been influenced severely by floods. By early 2017, HCM City has 171 flooded sites assigned by the district level; 40 submergence points assigned by Steering Center of Flooding Control Program, and 9 tidal flooded points. The paper will establish a suitable method for assessing flood vulnerability in HCM City from natural, social and environmental aspects. The results of a case study in District 6 show that there are four wards with high vulnerability and 10 wards with average vulnerability.

Viability of high-density resistivity method for evaluating mountain slope stability in Erdaojiang District,Tonghua City,China

The authors employ the high-density resistivity method to image the subsurface structure of a mountain in Erdaojiang District,Tonghua City,Jilin Province,China,to evaluate the potential risk of slope failure on surrounding residential areas and infrastructure,and identify a shallow fault that extends across the center of the mountain and is perpendicular to the mountain slope and accurately locate the spatial position and depth of another fault on the southern side of the mountain.The results provide an important basis for evaluating mountain slope stability.This study also demonstrates that the high-density resistivity method is effective for detecting mountain faults.

Planning and Layout Strategies of Urban Institution Pension Service Facilities under the Background of Aging Society: A Case Study of the Main Urban District of Xuzhou City

China has entered an aging society, and the contradiction between the social pension needs rapidly growing in the dty and the lagged pension business is increasingly outstanding. By analyzing the amount, development level, type, sttucture, and space distribution of the institutional pension facilityin main urban district of Xuzhou Qty, this paper has summed up the main problems. Combining the estimation on the number of the elders and pension bed, coordination and planning of institutionalpension facility in the research zone are conducted from three aspects： distribution guidance, ptindple of locating and differentiation configufation, to promote tiie construction of pension agenqr and impel the development of pension business in Xuzhou Qty.

A Research on Government Regulations on High Price and High Vacancy in Real Estate: A Case Study of the Southern District of Qingdao City

Real estate plays a vital role in national economy and contributes a lot to social development. However, the rapid progress that has been made brings some problems, such as high price and high vacacy. This thesis takes Southern District of Qingdao City as an example to illustrate government regulation concerning real estate, and at the end some suggestions are provided.

Renovation of Road Landscaping in Old Downtown Areas of Mountainous Cities:A Case Study of Pengshui County,Chongqing Municipality

Current situation of road landscaping in old districts of mountainous cities was analyzed,renovation design principles and basis were proposed. Pengshui County in Chongqing was taken for example to explore renovation design methods,overall concepts and relevant contents of the road landscaping in old districts of mountainous cities,so as to provide references for the renovation design of road landscaping in old districts of modern mountainous cities.

Landscape Evaluation of Public Green Spaces in Wuhua District and Panlong District of Kunming City

Wuhua District and Panlong District are two major downtown areas of Kuming City,recent construction and renovation of public green spaces in both districts have achieved considerable fruits.Through sampling major public green spaces in the study districts,plant landscapes were analyzed and compared on the basis of plant landscape evaluation system,principal characteristics of plant landscaping patterns in public green spaces of Kunming City and problems in the construction of public green spaces in both districts were summarized,so as to provide references for the landscape construction of public green spaces in Kunming City.

Analysis on the Characteristics of Rainstorm in Hanbin District of Ankang City during 1961-2003

[Objective] The research aimed to analyze the rainstorm characteristics in Hanbin District of Ankang City in 43 years. [Method] By using the daily and hourly precipitation data in Hanbin District of Ankang City during 1961-2003, the occurrence rule and variation characteristics of rainstorm weather in 43 years in the zone were analyzed. [Result] The distribution of rainstorm days in Hanbin District of Ankang City had the obvious season characteristic. The earliest rainstorm days occurred in May and started to increase in June. It frequently happened in July, August and gradually decreased in September. The latest rainstorm finished in the middle ten-day of October. The storm rainfall and days in Hanbin District of Ankang City during 1961-2003 both presented the obvious linear increase trend. From the 1970s to the end of 1980s, it was the period when the storm rainfall was more. The rainstorm days during the 1960s-early 1970s and early 1990s were fewer. The rainstorm days were more from the metaphase of 1970s to late 1980s and after the metaphase of 1990s. The time distribution characteristic of hourly precipitation in the rainstorm days was obvious and based mainly on the single peak type. The time mainly concentrated in the daytime, and the short-time strong precipitation was more. [Conclusion] The research provided the reference basis for accurately forecasting the rainstorm occurrence, disaster prevention and reduction work.