جستجوی مقالات مرتبط با کلیدواژه "توسعه شهری" در نشریات گروه "زیست شناسی"

Integrating nature into the buildings through green roofs and walls is considered a sustainable strategy in current city development. However, studies on organic waste growing media that allow appropriate plant establishment in these systems are insignificant and yet challenging. This study aimed to evaluate the stability of the Frankenia thymifolia cover plant in four combinations of growing media (30% cocopeat + 65% perlite + 5% vermicompost, 30% leaf litter + 65% perlite + 5% vermicompost, 30% mushroom compost + 65% perlite + 5% vermicompost, and the typical soil used in the green spaces as the control) in the external green wall conditions. The study was a split-plot arrangement in a randomized complete block design with three replications. The main factor was the different seasons in four levels, and the second was the growing media in four levels. Also, at the end of the study, the characteristics of the substrates were tested as a randomized complete block design experiment with three replications. The morpho-physiological traits of the Frankenia plant and the physicochemical characteristics under different growing media were significantly different (p≤0.01). The results showed that leaf surface features, leaf water content, chlorophyll a, b and total, carotenoid, and all the root-related traits were higher in the plants grown in the organic matter growing medium than those grown in the typical soil. Also, better physicochemical attributes (lower bulk density, porosity, less ash, more air volume, and more acidity) were observed in organic growing medium in comparison with the typical soil. The results of this research confirmed the favorable effect of using washed mushroom compost along with perlite and vermicompost instead of the common imported green wall substrates. It also suggests using the Frankenia in climates similar to Mashhad year-round in the external green wall systems.

With consideration of the rapid growth and expansion of cities, followed by population growth and the need for land for housing, it is necessary to have a detailed plan for urban development. The present study aimed to determine the appropriate use of urban development, based on the indicators of the model of ecological potential assessment of urban development in Iran in the city of Pardis, considering 14 criteria. For this purpose, the multi-criteria evaluation method, which the Analytic Hierarchy Process (AHP) is the most important process, was used to produce and analyze the data, and the existing criteria were evaluated and integrated according to the Makhdoom model using ARC GIS. Based on results, from total area of 27,600 hectares in the study area, 120,304 hectares have very unfavorable potential, 4404.50 hectares have unfavorable potential, 9433.34 hectares have medium potential, 8684.55 hectares have desirable potential and 4119 hectares also have very good potential. Slope and fault became the most important criteria in urban development and had the highest score, respectively. Also, the southern parts of the north and to some extent the central part of the region have a better position for the future expansion of the city.