Background and Aim: Visual contamination is a kind of environmental pollution that over time, its effects and consequences are increasing, and this pollution may gradually provide a good ground for nerve stress and psychological problems. Method: In this study, we tried to study the status of visual contamination and its impact on the health of citizens in two urban areas of one and twelve using the distribution of questionnaires and field method. Results: The results of the analysis of the data obtained from the questionnaire revealed a significant relationship between visual contamination and four health indicators of citizens including physical signs, social function, anxiety, insomnia and depression. This means that wherever the pollution is higher, the health of citizens is at a lower level. Conclusion: Accordingly, the average index of physical symptoms and anxiety - insomnia in district 1 in a healthy condition and in the twelve region is in a mild injury situation. Also, the average social function index and depression in both regions indicate mild injury and favorable health status in them, and overall, the results indicate that the general health of District 1 in desirable situation and the twelve regions are in an unfavorable situation.
Physical urban growth has the most significant impact on the vegetation of surrounding areas; the assessment and analysis of these changes are essential in geography and use different mechanisms. Here, remote sensing is the main technology for assessing expansion and the rate of change of land cover. Accordingly, the present study has been conducted with the aim of evaluating the physical growth of the city of Yazd in the years 1986–2016 and its impact on the trend of urban green space changes through the use of satellite images. This is an exploratory-descriptive research and it is cognitive in terms of the objective. To achieve this objective, the data from remote sensing and geographic information systems are used. The calculation of the trend of physical growth changes indicates that the city area was 3,118.25 hectares in 1986 and it increased to 15,232.47 hectares during a 30-year period; 52 percent of the urban growth was related to the horizontal and sprawl growth of the city. Assessment of the NDVI index showed that the density of vegetation had a tangible decreasing trend so that the sum of good and excellent vegetation was equal to 2,419 hectares in 1986; in 2016, the vegetation decreased to only 1,601 hectares. The maximum decrease in vegetation exactly corresponds with the maximum physical urban growth in the northwestern and the southeastern parts of the city such that the results of the research showed about 818 hectares of vegetation and gardens became constructed lands between 1986 and 2016
Urmia Lake is the largest inland wetland in Iran, which is shrinking. The gradual drying of Lake Urmia has been a national and international issue for several years. In recent decades, climate change, dam constrictions, unsustainable industrial development and excess exploitation of groundwater for agriculture have been the main cause of drying of Lake Urmia. It has been proven that in the case of lakes drying up, this change has an effect on the global climate. Considering the salinity of Urmia Lake and direction of the wind (principally in a W-E trending), the eastern coastal area of Urmia Lake is seriously in danger of salt intrusion into the soil and underground water that can totally affect the lives of the local population. It also endangers the existence of fauna and flora. This paper attempts to clarify the danger of drying Urmia Lake and salt dumping at the beds of lake and determine the effective parameters, using GIS® and ENVI software. Among the causes of Urmia lake dryness, the dam constrictions have been identified as the cases that has more drastic effects on Urmia lake.
Ecological and phytocenological assessments of 3 populations of Thymus caucasicus L. species were carried out in Ardabil. Classification of Th.caucasicus phytocenose on ecological groups were developed for the first time. In the result, the associations and their floristic composition and ecology were identified. Age, efficiency, aging indexes were appointed during cenological assessments of the Th.caucasicus formations. 3 natural cenopopulation of Th.caucasicus species were assessed, cenological situation studied in the territory, in 2013-2015 years and it was found that the 1st and 3rd populations were transition, 2nd was mature in 2013, in 2014, 1st was young, 2 nd and 3rd were mature, 1st and 2nd were young in 3rd was mature in 2015. Analysis of the parameters of population illustrated that restoration is higher in 1st and 2nd cenopopulation in 2015 rather than in 2013 - 2014.degradation of pasture to be casued that thymus population distrbution were significance decreased in the ardabil proviense.
present study is an experimental-laboratory study which the data collection is based on the collected data of field and documentation studies. this research, the quality process of Kan River's resources based on the examined results of qualitative parameters will be analyzed in details. For this purpose, first of all, the results of the analysis of the collected samples for one year were carried out to measure the physical and chemical parameters in 3stations. Heavy metals parameters are turbidity, Oxygen required for chemical usage, Oxygen required for biological usage, Phosphate, Nitrate, total soluble solids, electrical conductivity, PH, total Coliform and gastrointestinal Coliform, and Anions and Cations, according to the above parameters compared to the presentation of the process of quality changes along the river course and its impacts on agricultural and drinking uses are discussed. The results indicate that according to the results of the qualitative status of the water resources of the river, the range of the project due to the presence of heavy metals (Mercury, Cadmium, Manganese, and Chromium) which are above the limitations for agricultural use, the accumulation of heavy metals in the soil causes pollution of agricultural lands And through the soil-plant-animal cycle it may be at a human toxicity threshold. Also, the quality status of water resources of rivers in the project area is in moderate to good levels in terms of chemical parameters for drinking, but due to the quality of the heavy elements and the biological status and water pollution, drinking is not feasible
When the source of irrigation water is wastewater, then there are concerns about the pollution of crop products, the contact of farm workers with pathogens and environmental tensions on the farm''s surface. The purpose of this applied research was to investigate the quality of the wastewater of the combined cycle plant of Montazer Ghaem for re-using in agriculture. In this study, the characteristics of inlet wastewater and outlet effluent from the urban wastewater treatment plant of Montazer Ghaem were investigated based on the statistics of the period of operation and sampling. During the study, the effects of the medium –term usage on the physical and chemical properties of the soil and several plants affected by this water were studied. For this purpose,three samples from the inlet wastewater and three samples of outlet effluents of the treatment plants were provided and 11 sewage quality parameters were tested. Also, three soil samples were prepared from 0 to 30 cm depths from adjacent lands under irrigation with wastewater and a control sample and their physical and chemical properties were determined. Analysis of the changes in the physicochemical parameters showed that, except for the pH which was approximately constant, all parameters including EC, TDS, COD, BOD, turbidity, fat, oil, heavy metals (Fe, Ni, Cr, Cd, Cu, V) in the inlet wastewater were decreased after refining and leaving the treatment plant. However, some of the parameters were higher than standard levels which indicate the improper performance of the refineries in the removal of physico-chemical contaminants
Environmental issue is one of the most important issues in the world as well as in the country. Observing the principles of environmental ethics and its ability for being amenable by peopleâs religious sensitivity can help protect the environment and control it. The present study is an analytical-descriptive based investigation in which by reviewing and scrutinizing the available resource in Imamieâs jurisprudence, Environmental law has been extracted and inferred. The purpose of this research is the Imamie jurisprudence''s viewpoint to identify the right to the environment and the effect of religious sensitivity on environmental ethics. The necessary knowledge of it is the basis of many rulings and fatwa and the rules inferred from the reasons. This is a nudist talk that hasnât been seriously discussed in Imamieh jurisprudence so far. What is being looked at here, is a new step towards placing the environment in the form of the right of third-generation rights which is a public benefit and right. To prove this right, the sources and purposes of this right in the Imamieâs jurisprudence should be studied. This is a legal right and not a moral one. Findings of the research is: The teachings of Imamieâs jurisprudence are capable of considering the environment as a right; it is the realization of a collective and legal responsibility and not moral one. For the purpose of maintaining this collective benefit for all generations, the talk is about lawfulness, unlawfulness, and punishment of environmental perpetrators.