نشریه مطالعات علوم محیط زیست
سال سوم شماره 1 (بهار 1397)

The important issue of groundwater resources, understanding the characteristics of the local watershed or aquifer, identifying those that are infected and their management. In November 1395 of 8 wells sampled to assess and evaluate qualitative factors threatening groundwater resources was Yasouj. The factors measured in wells containing physical parameters (temperature, color and smell), chemical parameters (TDS, TSS, EC, pH), anion(CO3, SO4, Cl, NO3, NO) cations (K Mg Na ) heavy metals(Cd, Ag, Pb)and MTBE are. In situ pH and electrical conductivity and water temperature were measured. To measure the concentration of trace elements using atomic absorption furnace graphite concentration of anions by titration and potentiometric, concentrations of cations (Mg) using titration and Na, K by flame and measurements of MTBE by gas chromatography for was. The results of increased nitrate anion, sulfate and chloride in southern and western stations showed that the cause may be associated with the slope of the northeast to southwest and a sandy texture region. High concentrations of cations in the well of the East and Northeast region is visible in the case of potassium due, can be clay, drainage wells absorption and fertilizer in green space areas related Danstdamnh chloride concentration in the wells in the area between 94/9 and 99/2 at the station in station No. 5 is the migration of water in all wells was less than the standard set. In the case of heavy metals due to zoning maps and charts concentrations indicate the lack of ground water pollution area to the heavy metals lead and silver. The concentration of cadmium in all wells to a ratio of more than standard: μg / L> 1 is the cause of which can be washed off the streets and contaminated soil during rains, he said. In general it can be said from West to East potassium concentration, TDS, EC and from East to West nitrate concentration shows an upward trend.

The current process of general protection of the environment in Iran is somehow that many natural resources faces dangerous threats and even extinction. Protection of environment and natural resources, as one of three elements of sustainable development, plays a fundamental role in future developing of countries. In the meantime, wetlands are one of the richest in danger sources. Wetlands, due to their effects on preparing water, have a major role in preserving ecosystems in the region and are rich in bio-diversity from other lands from around. Whereas the increasing importance of wetlands in human life, and whereas their widespread poor management in recent years in our country, it’s necessary to observe this issue legally. This essay depend on Ramsar Convention on wetland protection and sensible use of local wetlands for communities, is seeking to critically evaluate the laws and regulations in Iranian legal system with a pathetic glance and also finally, while expressing internal deficiencies, and presenting an authentic model for wetlands protection.

In recent decades the problems of transportation in Tehran, One of the biggest problems occurred in the city, which is one of the consequences air pollution and the damage it caused to the national economy billions of rials. Research methodology Based on the study of and search a library, Statistics and calculations using data to understand how the distribution of PM2.5 pollutants emitted from vehicles. By using micro-climate model ENVI-met Influence of climatic parameters In distribution PM2.5 pollution in the areas of Vali Asr Avenue were studied. Data on the amount of pollutant PM2.5 Near Earth's surface By using diffusion coefficient formula and calculate the amount of pollutants produced Each of the different sources of energy is obtained. Distribution of PM2.5 emissions on two different days in terms of climatic conditions to 7:30 am October 29 and November 6, 2013 is analyzed and compared. The results show that the dispersion of pollutants published in Vali Asr street Between accumulation and distribution of pollutants is tangible relationship with wind speed and direction. Places where the wind speed has increased to some extent correlated with areas where there is a high concentration of pollutants. Also wind direction is guided into buildings and other obstacles After colliding with the obstacle Slowed down and increased the concentration of pollutants.

In this study, according to airport energy consumption that is more concentrated in passenger terminals, the passenger terminal No. 1 Mehrabad Tehran Airport has been studied according to the historical and historical background. Due to the geographical conditions of Mehrabad Airport and passenger traffic, the amount of energy consumption has been calculated and due to the high consumption of energy in this terminal, part of this energy is needed. Through computing the choice was made for 2340 solar panels and 250 solar tubes. The results show that in the case of the exchange of energy with the urban electricity network, up to 35% of the electrical energy can be supplied, and in some low-energy years, it fully supplies the terminal energy, and up to 15,000 meters Cubic meters a year for the production of steam boilers for saving gas.

The accumulation of toxic heavy metals in the food chain is one of the main detrimental abnormalities to personal and environmental health. Phenolic compounds, which are widely used today in various sectors of the industry, are one of these water and soil pollutants. The subject of this study is the experimental study of the function of cumin and its ashes in removing contaminated pollutants from phenolic compounds in which after preparing the acetophenol solution, the parameters affecting the yield of the cumin plant as a phenol absorber, such as pH, the ratio of the adsorbent to the Phenol solution, contact time and the initial concentration of phenol have been investigated. All measurements were performed in the presence of 4-amino-antipyrene and potassium fercyanide, by the white gold spectroscopy. The effects of removing phenolic pollutants from water were also investigated in four separate tests on fruits, roots and ashes of these two in the optimal conditions for each of these cases. The presented results, on average, reflect the results of all tests repeated three times and based on the results, the cumin plant in the initial concentration of phenol 150 mg / l, with the pH = 8 and contact time of 120 minutes exhibited the highest absorption efficiency with the adsorbent value of 0.8 g. While the best absorption efficiency for its ash, obtained at a primary concentration of phenol 200 mg / l and pH = 6 during the 120 minute contact time resulted in the presence of 11g adsorbent.

Many mountain communities and nations (with mountain) in the world, promote their ecotourism. The aim of this study was to assess and manage potential of tourism in mountain areas is Hamedan city. This issue is important unfortunately, in recent years the lack of attention to the environment, uncontrolled growth and things of this nature are expensive and walking ecotourism losses to the mountains of Hamadan city has arrived and cause massive disruptions in natural systems is biological. ARC GIS 9.3 software for analysis and analytic hierarchy process model (AHP) is used. The first layer information such as elevation, slope, aspect, soils, climate and vegetation were determined and collected. The parameters were classified based on ecological Makhdoom. Then by using analytic hierarchy process AHP Expert choice software using the parameters given weight. The next stage was the standardization of parameters of fuzzy logic in GIS environment. Then it layers the value obtained by multiplying the analytic hierarchy process. Finally, data layer logic GAMMA, AND they were on time and final capability layers were extracted. Visitor Survey maps from the logic of the logic SUM and OR were adjusted by comparing the actual situation seems more logical.