Urban Sustainability
AmirHossein Pourjohari
Abstract
Highlights- The great part of the construction sector in national investment affects the achievement of urban efficiency.- Destruction of durable buildings is in conflict with optimal use of capital.- Destruction and reconstruction of buildings without rights is an obstacle to achievement of life quality. IntroductionManagement ...
Read More
Highlights- The great part of the construction sector in national investment affects the achievement of urban efficiency.- Destruction of durable buildings is in conflict with optimal use of capital.- Destruction and reconstruction of buildings without rights is an obstacle to achievement of life quality. IntroductionManagement of the demand for destruction and reconstruction has been known as a challenge to preserve durable buildings which are still available for use as places to live in or perform activity. It is also effective on urban productivity, a general concept that contains all the urban functions. Buildings make up the main factor in specification of the economic and spatial structure in a city. They have a determinative role in urban management and development, and their productivity is interpreted as the use of all the physical and structural capacities. Therefore, it can be claimed that buildings are important in urban productivity.Buildings are a priority in the investment made in cities, particularly in our country. However, managerial patterns and legal system are not established based on the roles and rights to manage the demands for destruction and reconstruction. This results from the readily-available benefits of destruction and reconstruction, which conceal the costs. Due to the importance of buildings as a national value and given the concept of sustainable development, it is necessary to analyze the statistical trends and study the different factors which impact the public tendency to destroy and reconstruct buildings.Theoretical frameworkAn essential approach to protection of durable buildings concerns infill development. This approach, which originates from sustainable development, includes one of the most serious activities performed to preserve durable buildings: adaptive reuse of buildings which exhibit the capacity to be preserved (based on their forms and functions). In other words, adaptive reuse of buildings is based on their capacities and characteristics. Therefore, the main approach to durable building preservation stems from sustainable development. Return to life cycle is the relevant pattern which can increase the efficiency period of a building. Urban efficiency is a way to improve urban management.It is worth mentioning that urban land, as a basis for creation of buildings, has a remarkable role in the attempt to achieve urban efficiency. The city and the functions which are created there are defined on that basis.MethodologyIn this research, statistical information on destruction and reconstruction permits granted in a twenty-year period has been analyzed. In addition, 4526 cases have been selected as durable buildings using random sampling. Moreover, an evaluation of the income codes of Tehran Municipality in the defined period has been considered. Therefore, this research has studied the public and managerial trends concerning the preservation of durable buildings and the relevant side effective factors.Result and discussionThe results of this investigation revealed that the value added due to destruction and reconstruction is the most important factor that encourages people to make such demands. However, an analysis of urban management income shows that destruction of durable buildings has no great impact thereon. It seems that a number of modifications in urban terms and restrictions need to be considered in durable building preservation. In this case, one must consider definition of new methods for creation of value added to satisfy the owners of durable buildings in order to preserve them.ConclusionThe factor that distinguishes this study from others is that it has focused on legal principles in management of the demand for destruction and reconstruction. Moreover, failure in supervision and administration and management inconsistency have been identified as the most important factors in the decision to destroy buildings which have the capacity to be preserved. In other words, urban management does not provide appropriate techniques to manage the demand for destruction and reconstruction.In conclusion, the tendency to destroy durable buildings could be explained in terms of the following.A. Economic and Social FactorsThe lack of balance in urban economics and uncertainty of investment in productive departments have been recognized as parameters that increase the tendency to destroy and reconstruct durable buildings.B. Legal Factors- There is no definition for durable buildings and the importance of their preservation as a national value.- Economic policies such as reduction of interest on bank deposits have facilitated investment in construction.C. Cultural FactorsThere is conflict between individual and public benefits which stem from culture. Therefore, people’s priorities are defined by their own benefit. In addition, the importance and priorities of individual benefits over public ones result from legal documents. Thus, the public tendency to give priority to individual benefits has been affected by laws and rights. Moreover, the poor sources of supplying sustainable income in urban management make up another factor that increases managerial tendency to construct.In other words, urban management benefits from the added value of destruction and reconstruction. However, there are no facilities or techniques to modify the tendency.
Urban Sustainability
Mohammad Mehdi Azizi; samaneh khosravani nezhad
Abstract
Highlights
Analysis of the pedagogical orientation of the planning discipline towards the concept of sustainable development and its position in the academic field
Orientation of the patterns of education towards sustainable development
The predominant orientation in the teaching of ...
Read More
Highlights
Analysis of the pedagogical orientation of the planning discipline towards the concept of sustainable development and its position in the academic field
Orientation of the patterns of education towards sustainable development
The predominant orientation in the teaching of sustainability involves the provision of an independent course on sustainability and environmental concepts and inclusion of instructions on sustainability in the procedure and materials of planning courses
Consideration of the issue of sustainability can be observed formally in the sub-disciplines of urban design and regional planning as one and two optional courses, respectively, in masters studies of educational planning in Iran.
Introduction
The change in the attitude of the urban planning discipline from the growth to the sustainability paradigm resulted from the inefficiency of the discipline and profession in response to environmental concerns around the world since the second half of the twentieth century; this shifted the substantial, procedural orientation of the discipline to the latter dominant paradigm. The result of such a change in attitude in the late twentieth century was reflected worldwide in formal and informal educational planning, and different orientations towards sustainability and sustainable development took shape according to the conditions in each country.
Theoretical Framework
The fundamental question that this article seeks to answer can be raised as follows: given the position of urban planners in plans and programs where they function as specialized managers and coordinators, what is the position of sustainable development with a focus on environmental and social issues in urban planning education, and how can urban development graduates be promoted in the field to improve the quality of professional activities? The purpose of this study is to analyze the pedagogical orientation of the urban planning discipline towards the concept of sustainable development and its position in the academic field, where professionals are trained to work in the profession.
Methodology
It is directly affected by the nature of the field how an emerging idea is addressed in any knowledge. Transition from theory to practice requires the idea to go through the scientific process of education. Education that has adopted its input from research and profession conceptualizes it and transmits it to future students and professionals as educational content–involving the knowledge, skills, and value of urban planning curricula. Thus, different feedbacks can be provided to the profession given the type of acceptance and the way education deals with emerging phenomena and ideas in the field of urban planning. At the same time, there is the missing link between education and profession, which is being moved from the channel of education to profession in the transition towards sustainable development. The specific area and research gap elaborated on in this study is the number of orientation patterns of education towards sustainable development, which are specified based on the research method.
The main tool used in this fundamental qualitative descriptive-analytical method is content analysis, enabled through the capabilities of the SPSS software.
Results and Discussion
The results of the authors’ surveys at 128 universities in 9 different countries demonstrated that the predominant orientation in the teaching of sustainability is to provide an independent course on sustainability and environmental concepts and to teach sustainability in the procedure and materials of urban planning courses. The results can be observed in the case of Iran, as a developing country that strives to move towards sustainability, contrary to the direction taken in the profession corresponding to the discipline. In Iran, the only independent course on sustainability is that entitled Sustainable Urban Development, which is an optional course presented in two theoretical credits. Among all the universities with doctorate programs in urban planning, however, this course is taught only at two, namely the University of Tehran and Tehran University of Art. For a master’s degree in urban planning, on the other hand, it is included in different sub-disciplines of the curricula. Although courses with environmental content and topics are offered in all sub-disciplines, consideration of the issue of sustainability can be observed formally in urban design and regional planning as one and two optional courses, respectively.
Conclusion
The current trend will practically slow down the process of replacing the growth paradigm with the sustainability paradigm and bring about wide gaps therein. However, the proper orientation adopted in the discipline in recent years in regard to education of sustainability and sustainable development conveys the message that the gap will be reduced greatly in the future. This means that the appropriate orientation of the discipline (in education and research) is also reflected in the profession to help responds to the requirements of the field in the right direction. This is especially important in the training of graduates who will be developing plans and programs in the future. Education of sustainability and sustainable development, one of the criteria examined in the Green Metric ranking system, can be considered as a focus of future applied research and as a step forward in its achievement.
Urban Planning
Soroush Khalili; Jamileh Tavakolinia; Naghmeh Mobarghei Dinan; Hamid Soltaninejad
Abstract
HighlightsThis paper evaluates Arg commercial center with EIA method;After the studies, the present research prepares a procedure on reducing the environmental impact of commercial centers with the help of EMP;The growing interest in building commercial centers in large cities is a significant issue ...
Read More
HighlightsThis paper evaluates Arg commercial center with EIA method;After the studies, the present research prepares a procedure on reducing the environmental impact of commercial centers with the help of EMP;The growing interest in building commercial centers in large cities is a significant issue that is shown in this research. IntroductionNowadays, large areas of urban land are dedicated to commercial uses, and the trend towards shopping center construction has intensified. As a type of public space, commercial spaces, have conquered cities and snatched the lead from other land uses in the city. Commercial centers have turned into part of people’s lifestyles in this era, and have played an important role in the retail industry. Besides the positive economic effects of the savings, these centers have also caused damage to the environment. Theoretical FrameworkIn today’s intellectual world, a proper urban environment is an influential factor in human social life. Like all environments in which life takes place, the urban environment affects and is affected by human activities, and this interaction can lead to environmental catastrophes if destructive, due to the large populations that are involved. Today, the problems that have arisen in the environmental input conditions are troubling many cities in the country, and the preservation of the urban environment in urban development and management plans has been subject to plenty of inconsistency and negligence. Numerous approaches and theories have been proposed on the subject of the urban environment and healthy city, such as garden city movement, eco-city (ecological city), compact city, smart city, sustainable development, etc.According to the above theories and following a detailed study of each, the sustainability approach can be considered as the most common, practical approach in the present century. Sustainable development can be defined as the management of the relationships between human systems and natural ecosystems with the aim of sustainable use of resources to ensure the well-being of present and future generations. Therefore, the theoretical approach of this paper involves sustainable development. MethodologyThe study area includes the Arg commercial center, located in the Tajrish area, Tehran. The availability of the old bazaar, malls, and shopping places has turned the Tajrish neighborhood and its surroundings into a major commercial center in the north of Tehran. The economic prosperity thus brought to the neighborhood has caused many problems due to the multiplication of the population during the day. The main square in the area in the past was the current Tajrish Square, next to which commercial centers and houses were built.Using the method of systematic study in this descriptive research, quantitative statistical methods were adopted at the descriptive level. Moreover, the research technique was selected based on the application of the EIA model, with the help of RIAM. Among the various methods of environmental impact assessment, the Rapid Impact Assessment Matrix, also known as the Pastakia Matrix, could objectively and conceptually assess and compare options in plans and projects and display the results clearly and concisely as tables and graphs.The Environmental Management Plan could help reduce the adverse effects of a project and ensure that the current quality of the environment is maintained. This plan provides solutions in all the stages of planning, construction, operation, and post-operation of a development project concerning the environment. The development of an environmental management plan is aimed mainly at projects for which EIA studies have not been carried out before construction, as in the case study of the Arg commercial center. Whereas environmental impact assessment studies begin at the same time as the cognition phase and before its approval, with executive operations in some cases, the environmental management plan section of these reports would never be implemented in practice due to the non-location of the provided solutions and suggestions, and would be removed from the agenda. Thus, no control or auditing was performed on the impacts of the project on the environment. Results and DiscussionIn order to demonstrate the significance of whether the construction of the Arg commercial center at the current location was appropriate, a rapid impact assessment matrix was developed in the present study in four physical-chemical, bio-ecological, socio-cultural, and economic-technical environments. After a detailed study of each of the four affected environments, we obtained the sum of all the ranges of change, where range -D, with environmental scores ranging from -36 to -71, clearly exhibited the largest number of adverse effects, and the physical-chemical environment had the largest number of negative components. The results indicated the severity of the negative impacts caused by the construction of Arg.The possible consequences of the project once implemented on the environment were identified, given the nature of various activities after the project and the current conditions of the environment in the area. In addition, the legal regulations were reviewed. ConclusionAn acceptable method of achieving the purposes of sustainable development is to make environmental assessments for projects, which can be made available to managers, planners, and decision-makers as a planning tool. These days, the high dignity of human beings and efforts to increase their comfort are often ignored in the design, construction, and location of commercial spaces, and only economic benefits are considered, dominating other dimensions of sustainability, such as the environmental dimension.Finally, it is suggested that the environmental impact assessment for large commercial complexes be made early upon the project proposal, i.e. in the recognition phase, and a construction permit be issued for the center in question after all the above evaluation reports are compiled and defended.
Urban Ecology
Hooshmand Alizadeh; Werya Lotfi; Salah Vaisi
Abstract
Man’s unsustainable use of environmental resources needs to be tackled from different perspectives and at multiple levels of land use. Ecological Footprint (EF) is a renewable resource accounting tool that assesses the environmental impacts of urban land uses, and measures the impact of human activities ...
Read More
Man’s unsustainable use of environmental resources needs to be tackled from different perspectives and at multiple levels of land use. Ecological Footprint (EF) is a renewable resource accounting tool that assesses the environmental impacts of urban land uses, and measures the impact of human activities on the environment with respect to the underlying issue of sustainable consumption. EF compares the level of consumption with the available amount of biocapacity to demonstrate how human beings are using natural resources faster than they can regenerate them. It was developed originally as an indicator of the environmental impacts of nations, individuals, or human populations or of organizational and corporate environmental performance and even product sustainability. Given this capability, the environmental impact of the University of Kurdistan campus as a major urban land use in the city of Sanandaj, Iran was evaluated in this study using the component-based footprinting method. Actual data on the five environmental indicators of natural gas, electricity, water, food, and waste were collected during the 2014-2015 academic year. The results indicate that the University of Kurdistan ecological footprint index in the above academic year is -0.56. On that basis, the function and performance of the university has been unsustainable with respect to the examined indicators. In addition, the results indicated that the University of Kurdistan ecological footprint is about 16,675 global hectares, which means that an area of land 165 times larger than the university is needed to compensate for the amount of natural resources consumed and the resulting waste. It can therefore be stated that the University of Kurdistan campus exhibits unsustainable performance in the 2014-2015 academic year. Furthermore, the energy (natural gas and electricity) and water indicators show the highest and lowest levels of environmental impacts with 72.03 and 0.97 percent of total ecological footprint, respectively. Therefore, the environmental impact of energy consumption is about 2.5 times that of the other indicators investigated here (water, food, and waste). As suggested in the literature, the most important indicators used in the ecological footprint model at various universities around the world include energy, fuel consumption in transportation, materials, food, water, waste, and paper consumption, among which energy exhibits the highest level of environmental impacts, as suggested by the results obtained for the University of Kurdistan. On that basis, the University of Kurdistan campus ranks second after the University of Algarve campus (Portuguese) in terms of impact on the environment. Therefore, it is necessary to prioritize energy consumption in the university policies and plans for reduction of natural resource consumption. For that purpose, a comprehensive plan should be developed firstly to monitor the environmental impacts of natural resource useand secondly to modify the consumption pattern and thus reduce the impact of the university on the environmental resources.
