نشریه علوم و تکنولوژی محیط زیست
سال بیست و ششم شماره 10 (پیاپی 149، دی 1403)

Wind erosion is one of the major environmental issues Currently, the lands affected by wind erosion reach more than 5.05 million square kilometers. Although wind erosion is not a new challenge. But it has recently been recognized as one of the main sources of environmental threats worldwide.in Iran More than one million square kilometers, equivalent to 64.66% of the country's area, are covered by arid and semi-arid areas. Of these sand dunes in approxIt covers 130,000 square kilometers of the country's desert basin, of which more than 50,000 square kilometers include active and inactive sand dunes.in this It covers 130,000 square kilometers of the country's desert basin, of which more than 50,000 square kilometers include active and inactive sand dunes.

in this A study using the Erifer intensity method of different areas of the region. The study is in the area of the eastern border of the country and in the outer slopes of the mountains of the eastern border. The country that is located under the territory of one of the most important playas of Iran (Petergan playa) has been investigated.

The purpose of this review is also to check efficiency Erifer's method is used to estimate wind erosion potential in this part of our country. Based on the results of high and very high erosion classes including about 55 percent, they have allocated the most area. The medium and low erosion class is ranked second with 38.2% of the region. The average amount of wind erosion in the region was calculated to be 25.17 tons per hectare per year.

According to the field data and its compliance with the results of the model It was observed that the results of the model had a high compliance with the real data and provided acceptable results.

In the contemporary world, a variety of approaches and concepts such as livability and safe city have been used to solve urban problems. Viability of a place is affected by a variety of factors including: attendancy, urban infrastructure and facilities, sense of belonging, efficiency and environment. It should also be noted that crime rates (actual) and fear of criminal victimization (perception) have a causal relationship with many health and well-being outcomes. The present study was an attempt to assess the social security- urban livability interaction (in both objective and subjective dimensions) in Feyzabad neighborhood of Kermanshah. Security and livability criteria were formulated hierarchically and in tabular format, respectively.

The present study falls within the category of applied studies and can be recognized as a descriptive-analytical study and a correlational factor analysis in terms of methodology. The sample size was estimated to be 395 (p=5%) and the questionnaires were distributed among samples through simple random distribution.

The findings suggest that there is a significant positive correlation between social security and objective - subjective urban livability. According to the viewpoint of residents, urban livability and social security in Feyzabad neighborhood are at moderate-to-weak and low levels, respectively. 

The results show that any rise in livability indicators in a neighborhood, can lead to enhancement of security sense. Therefore, cultural and social planners and other relevant institutions are advised to promote the sense of security through careful planning and enhancement of the livability indicators mentioned in the present study.

The earth's mineral resources limitation and heterogeneous distribution of these substances in different countries have made human beings think about extracting and using resources of the other parts and even extraterrestrial resources. Deep-sea mineral deposits can be considered as a reliable alternative potential to compensate for the limitations of land resources. According to number of authorized companies that operate in the region, sensitivity to the protection and preservation of the marine environment of the region is also increased. International Seabed Authority face with major discussions about protection of mining & exploration areas also, operating conditions, effective factors such as scientific mining processes, volcanic and technical processes, geochemical rocks and fluids, considering environmental requirements, performing extensive evaluation and field environmental assessment in the seabed before drilling and extraction operations. According to wide acceptance of the international community to provide primary funds in this sector, more codified and modern frameworks based on environmental criteria and requirements on a global scale base on the sustainable development approach and environmental protection, especially marine ecosystems in the seabed and sub-seabed should be defined and implemented.

flood is considered as one of the natural hazards, which in addition to natural factors is also influenced to some extent by human factors, and rural communities are more affected by flood hazards than other human groups due to their deep connection with the environment and agricultural activities. Are. Based on this, at different levels of accident management, favorable conditions have been created for efficient and effective reduction of risks. In the meantime, resilience and its increase in different dimensions is considered as one of the most important factors for realizing sustainability and a complementary factor in the crisis management process. The current research was conducted with the aim of comprehensive analysis of urban resilience against hazards using factor analysis in Sanandaj city.

The present study falls within the category of applied studies and can be recognized as a descriptive-analytical study and a correlational factor analysis in terms of methodology. The sample size was estimated to be 395 (p=5%) and the questionnaires were distributed among samples through simple random distribution. In terms of method, this research is considered as a descriptive-analytical and correlational type of research. The present study is interpreted and reported in two parts. In the first part, the structural validity of the designed questionnaire on the factors affecting the resilience of Sanandaj city has been investigated. Construct validity was done through two methods of exploratory factor analysis and confirmatory factor analysis, and multi-group method was used to check the invariability of the questionnaire designed in Sanandaj city. The second part was to examine the analysis and comparison of indicators and the relationship of each of them based on descriptive and inferential methods of Dimtel and structural equations. SPSS26 software was used to investigate the exploratory factor analysis and statistical tests related to the research hypotheses, AMOS24 software was used for the first and second order confirmatory factor analysis, and AMOS24 software was used to check McDonald's omega coefficients.

In the first-order confirmatory factor analysis, the values of the goodness-of-fit indices show the acceptable fit of the proposed model with the data.

According to the results of the structure of standard coefficients, the highest coefficient in the components is assigned to the physical index, and also the results show that the resilience of Sanandaj city has appropriate convergent and divergent validity.

The villages integrated into the cities have threats and opportunities that, if identified and planned for, can provide sustainable living conditions. The current research has been conducted to evaluate and analyze the stability of the factors affecting the improvement of the livability of integrated villages in the Tabriz metropolis.

The paper is applied, and its nature is descriptive-analytical and inferential. The statistical population of the paper consists of 24,961 households living in six integrated villages, of which 387 people were selected as the sample size using the Cochran method. The number of research indicators is 58, related to economic, social, and environmental dimensions. The analysis of the research findings has been done using the stability barometer model and statistical tests.

The results of this paper showed that the environmental indicators of the studied villages were 0.482, social indexes were 0.417, and economic indicators were 0.401. Also, in terms of all three groups of indexes, the rurales of Barenj and Kondrood had more points compared to the villages of Akhmaqiye, Anakhaton, Sahlan, and Fathabad. The Tukey and Scheffe test results showed a significant difference in all six studied rurales in terms of intra-group and inter-group in terms of three variables.

inally recommended that the executive programs in the studied villages should focus on the shortcomings of each rural area, focusing on housing renovation, eliminating inequality in access to services and expanding green spaces.

In this study, we compared the efficiency of pure GO (Graphene oxide) and GO modified with EDTA as an absorber for methylene blue and some heavy metals such as copper, lead, and arsenic. Regarding the structural properties of EDTA, we expected that after attaching EDTA to GO, the effect of modified GO in adsorption of pollutants, increased. Based on the characteristics of synthesized nanohybrid, methylene blue (MB) absorbed through interactions with GO levels through π-π interaction, as well as electrostatic interactions with EDTA. Heavy metals adsorbed to modified GO by forming a complex compound.

X-ray powder Diffraction (XRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), UltraViolet-Visible Spectroscopy (UV-Vis) were approved.

 0.03 grams of synthesized modified GO eliminated 30 ml of contaminants at a concentration of 1 g/l in the first 30 minutes.

The results show high removal efficiency in the first 30 minutes witch that confirming the effect of modified GO on color removal efficiency.

The main purpose of zoning natural environments under management is to describe and determine different levels of protection and to separate sensitive and vulnerable areas. In this study, an attempt has been made to zoning the mangrove protected area to provide the basis for the optimal management of the area in order to achieve the protection objectives emphasized by the Department of Environment and the International Union for Conservation of Nature.

The Hara protected area, as a sensitive marine area with the largest area of ​​mangrove forests in Iran, with an area of ​​86258 hectares is located between the two cities of Bandar Khamir and Qeshm in Hormozgan province. In the zoning process, after identifying criteria with ecological and human nature for each of the eleven zones and screening them by Delphi method, the criteria were weighted using Shannon entropy decision method, then a linear model of combining spatial criteria was developed and in GIS environment. They were layered and combined, and zoning map was prepared as planning units in the region.

The result of zoning in the Hara protected area shows restricted nature zones 12.40%, protection Zone 14.83%, Extensive Use Zone 3.28%, Intensive Use Zone 0.65%, cultural and historical Zone 0.07%, Special Use Zone 0.11%, Buffer Zone 63. 90%, Scientific Zone 0.21% and Other Uses Zone 4.54% of the total area.

Summarizing the research results showed that using zoning models of spatial criteria, zoning of areas can be provided correctly and while preserving ecological and human values.