scholarly journals Vitality structure of Acer negundo populations in an urban environment

2021 ◽  
Vol 895 (1) ◽  
pp. 012030
Author(s):  
G Yu Morozova

Abstract The results of a comparative analysis of the vitality structure of Acer negundo populations during ontogenetic development in an urban environment are presented. The vitality structure of A. negundo populations is changing from prosperous to depressive, with the changing living condition of individuals and the quality of populations in urban conditions. The quality index of A negundo populations was in the amplitude from 0.5 to 0.166 along the urbanization gradient. High plasticity and variability of A negundo in combination with the dynamic vitality structure on the background of anthropogenic impacts provide active colonization of this invasive species in the city.

2021 ◽  
pp. 5-13
Author(s):  
Anna Tikhonova ◽  
◽  
Anna Kholodenko ◽  

This paper examines the existing in the Russian Federation approaches to assessing the quality of the urban environment, the concept of the quality index of the urban environment; the analysis of indicators for calculating the quality index of the urban environment and the factors that form the ecological well-being of the urban environment for the local population has been carried out. The territory of the northern industrial hub of Volgograd was chosen as the object of research, in particular, the zone of influence of the ferrous metallurgy enterprise AO “VMK ‘Krasny Oktyabr’”, which has a historically specific location relative to the functional zones of the city. The analysis of the results of monitoring the content of mobile forms of heavy metals in the soil cover, carried out by the method of atomic absorption spectrometry, and the assessment of the general life state of tree green plantations in the territory of the sanitary protection zone of the enterprise based on the enumeration of trees is presented. The identified zone of influence of the enterprise, taking into account the presence of additional sources of pollution of the soil cover and MPC of metals, instead of their background concentrations, extends for 3.5–3.7 km from the border of the enterprise in the form of elongated areas of increased concentrations. Cartographic visualization reveals the presence of two clearly pronounced foci of pollution located to the west of the existing SOC of the enterprise. When assessing the general condition of trees, it is also possible to recognize the worst territory of the test plots located to the west of the operating TWCs in accordance with the directions of the prevailing winds. The data obtained confirm the feasibility of organizing regular monitoring of the soil cover and the state of green forests in the city as one of the directions for assessing the quality of the environment and taking these indicators into account when calculating the quality index of the urban environment.


2020 ◽  
Vol 161 ◽  
pp. 01002
Author(s):  
D M Suvorov ◽  
L. A. Suvorova ◽  
T V Baibakova

The goal of the study is to make a comparative analysis of the dynamics of indices of economic indicators and sufficiency indicators used to calculate an urban environment quality index of a Russian municipality. The city of Kirov, Russia, was taken as a sample for the study, which went on from 2012 through 2018. The analysis demonstrated practically no statistically significant correlations in the dynamics of indices of individual subgroups of indicators, as well as in the dynamics of indices of individual indicators, although with a few exceptions. The results of the study confirm the need to improve the methodology of calculating the integral indices of cities and regions. These indices are related to urban ecology, quality of life, and sustainable development issues. The results also demonstrated the inadequacy of such tools for systematic and comprehensive international analysis of today urbanization problems.


2021 ◽  
Vol 11 (1) ◽  
pp. 160-168
Author(s):  
Viktor P. GENERALOV ◽  
Elena M. GENERALOVA

The study reveals the aspects that defi ne the concept of “lifestyle”, including the main categories: standard of living, lifestyle, quality of life and lifestyle. Insuffi cient knowledge of the mutual infl uence of people’s “lifestyle” on the typological structure of apartments and residential buildings, on the quality of the urban environment is emphasized. The infl uence of the level of urbanization of the city territory on the characteristics of the “urban lifestyle” is considered. Problematic issues are raised related to the debate on the relationship between building density and comfort and the quality index of the living environment. The main directions of fundamental research in the fi eld of architecture, aimed at the development of new types of buildings, are touched upon. The emphasis is made on the methods of using high-rise buildings for the humanization of the urban environment and the formation of a modern “compact city”.


2021 ◽  
Vol 39 ◽  
pp. 01004
Author(s):  
N.V. Litvinenko ◽  
E.P. Evtushkova ◽  
Yu.E. Ogneva

In modern urban conditions with intensive industrial production affecting the life and health of people, the authorities of many cities have thought about holding activities aimed at improving the ecological component of the urban environment. One of such activities may be the creation or improvement of the ecological framework of the city. This article discusses the features of the ecological framework in the industrial city of Tobolsk. A number of tasks that are faced by the City Administration were formulated; those must be solved using sound reconstruction methods of urban territorial and functional structures. The role of the ecological framework of the urban area is considered as the possibility of avoiding the environmental problems’ emergence and preserving the ability of the territorial system as an independent land and property complex to develop.


2020 ◽  
pp. 1-4

Placemaking is an inclusive approach to the planning, design, and management of public places by which people create and/or recreate places. In the context of the Arab cities, placemaking projects are often envisaged to transform communities’ spaces into lively and attractive places; to enhance quality of life and opportunity for existing residents. It also aims to (re)create a distinct sense of place or place branding at large. Exploring how contemporary Arab cities have framed placemaking processes within the contemporary urban conditions, and sometimes the threats to the quality of the city, are helping in creating healthier, equitable, and humane public places. Such challenges and opportunities of these processes is a core component of this special edition of The Journal of Public Space, which discusses various aspects of placemaking in Arab Cities, ranges from creating, enhancing, adapting and developing attractive and efficient public places in Arab Cities. In this context, academic papers and viewpoints have manifested a variety of perspectives, theories and practices of placemaking concepts, methods, recent challenges and possible solutions. They portrayed several tools on establishing and revitalizing public places starting from governmental toolkits, reaching unplanned activities fostering community engagement in placemaking.


2017 ◽  
Vol 15 ◽  
Author(s):  
Verry Lahamendu ◽  
Judy O. Waani ◽  
Aristotulus E. Tungka

China Village or Town is an urban region with Chinese as majority of the community. The China Town is located at the old part of the city of Manado and is well known as one of the oldest trade centres in Manado. As one of the urban heritage in the city of Manado, the Chinatown has unique landmarks with temples that are religious buildings for the Chinese community. With time, the quality of the environment has degraded and the image of the Chinatown has become vague.This paper investigates the existing condition of the town through site observation. It then proposes several suggestions with regard to the revitalisation of the Chinatown without discarding its existing function as a one of the trade centres in Manado. It is hoped that the revitalisation of the town would improve the quality of its urban environment that at the end would positively impact the quality of life of its dwellers, and construct the image of the city as a whole.


2020 ◽  
Vol 103 ◽  
pp. 27-35
Author(s):  
Shichun Zong ◽  
Hirotomo Ohuchi

Due to the development of communication information networks in contemporary cities, and without the interconnection of space units, the quality of the overall urban environment is declining. Simultaneously, the awareness of people sharing such an environment is being lost. In this paper, we address Tsukishima, Tsukuda, Higashiueno, and Tsukiji areas in the historical city of Edo-Tokyo. investigate the district blocks and the environmental recognition of the residents to clarify how cognitive region coalesces as space. The results of our analysis show that the cognitive region will shift from the area where residents live due to the passage of time. There is some concern that the awareness of sharing in the area is decreasing. Based on survey data conducted in 1996 and 2011· 2012, the area of Tsukishima, Tsukiji, Tsukuda, and Higashiueno from the analysis of the resident's environmental perception to evaluate the change process over time, and it was possible to clarify the spread and change of the composition of environmental recognition of residents in historical urban areas (Downtown).


Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 856 ◽  
Author(s):  
Mónica Eljaiek-Urzola ◽  
Nora Romero-Sierra ◽  
Laura Segrera-Cabarcas ◽  
David Valdelamar-Martínez ◽  
Édgar Quiñones-Bolaños

Water quality indexes are a tool used to evaluate the physicochemical characteristics of a water body according to its use. The present study proposes the inclusion of oil and grease (OG) as a new water quality index (ICAMPFF-GA) parameter for the preservation of marine biota in tropical areas, since it is a typical pollutant found and measured in water bodies, causing damage to the aquatic environment. The normalized curve for OG was defined based on the percentage of surviving microorganism under a lethal concentration exposure of OG. The ICAMPFF-GA suitability was evaluated by its application to analyze marine water quality in the area of the sea outfall in the city of Cartagena, Colombia and comparing the trends of the outfall flow and the rainfall for 2017. Physical chemical data analyzed for the year 2017 shows that OG varies from 0.0 to 3.8 mg/L. The results show that the water quality index increases when rainfall and flow values increase for the rainy season. The ICAMPFF-GA can be a tool to evaluate the water quality of marine waters affected by the discharge of waters with oil and grease.


2020 ◽  
Vol 175 ◽  
pp. 06006
Author(s):  
Albina Mokina ◽  
Evelina Vereshchagina

At present, the environment of a large modern city is technologically saturated to the limit, urbanized, and the most important task is a competent system of improvement and greening of urban areas. The article discusses the key projects of the city of Rostov-on-don to improve the quality of the urban environment from 2007 to the present. Existing projects included in the system of Federal projects operate only on small sections of the city territory, and do not solve the entire set of tasks within the entire city budget. This study shows that in urban planning there is no unified system of improvement and landscaping, implemented throughout the city according to a single plan. The article points out that modern systems and technologies are not used in the city, and if they are used, they are not used in a complex way, but only in fragments. The article focuses on the prospects for the integrated application of modern systems. The final part contains conclusions based on research materials. A comprehensive solution based on the collaboration of science and technology, all existing problems in the city territory will improve the main indicators of comfort and investment attractiveness of Rostov-on-don.


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