جستجوی مقالات مرتبط با کلیدواژه « tehran metropolis » در نشریات گروه « آبخیزداری، بیابان، محیط زیست، مرتع »

This research has evaluated transit- oriented development around Valiasr Square metro station in Tehran, emphasizing the environmental impacts. The research method was based on descriptive-analytical method. In data collection, both documentary and survey methods have been used. Quantitative and qualitative methods have been used in data analysis, so that based on quantitative methods, descriptive and inferential statistical tests, including averaging, analysis of variance (ANOVA), Levin's statistic, and gamma correlation test have been used. Trend analysis has also been used in qualitative methods. The statistical population included local community. Data validity was based on construct validity; and the reliability of the questionnaire was based on Cronbach's alpha. The findings demonstrated the most dimensions affected by the implementation of the project are related to the economic dimension (with an average of 65/4%) and the least is related to the institutional-legal dimension (with an average of 53/8 %). Estimates illustrate the positive impacts of the implementation of the project in the future, based on the Likert spectrum scale, will be high level. The results of analysis of variance elucidate the significance level of Levin's test is greater than 0.05. As a result, the assumption of equality of variances in different statistical societies is confirmed. Also, based on the results of Gamma test, the significance level was above 0.05, as a result, there is no significant difference in terms of belief in the effectiveness of the project implementation among citizens of local community in the study area.

The island's thermal city is one of the most prominent consequences of the expansion of urbanization and metropolitan development. The effects of the formation of thermal islands can play an important role in air quality and, consequently, in general health. The purpose of this study was to investigate the role of surface coatings on climate change in Tehran metropolis. In this study, the required data from the 10 and 11 bands of OLI and TIRS sensors of Satellite Landsat 8 in the summer and winter of 2017 are used. To study the thermal island status, single-band classes were used to study the distribution of ground temperature in the Tehran area and determine the local effects of Thermal Island in the city. Based on research findings, surface temperature and variables vegetation cover, city structural features and wasteland area, normal difference it was obtained to determine the effects of green, bare, blue and residential land on thermal island. The results showed that the effect of Isle of Man in the northern regions of the city is due to the existence of industrial township and mountain topography. There is also a correlation between ground temperature and Tehran's vegetation index, as the surface temperature of the city has increased with decreasing vegetation. Finally, according to research findings, practical proposals have been presented.