در دنیای رو به رشد امروز که رشدانفجارگونهجمعیت رشد بی رویه پسماند و آلودگی های خاص آن را به همراه دارد، ذهن کارشناسان محیط‌زیست با این مسئله که تا چه حد این مواد می تواند محیط‌زیست، آب،خاکو هوا را درمعرضخطرقراردهد، درگیر شده است. دفع غیربهداشتی پسماند جامد بر موجودات متفاوت در غلظت ها و شدت های متفاوت آلودگی، اثرات متفاوتی ایجاد خواهد نمود. هدف از تحقیق حاضر، ارزیابی زیست محیطی محل دفن پسماند جامد شهر یزد است که برای این منظور نمونه برداری زیست محیطی از عناصر محیطی مکان دفن فعلی و بررسی میزان و ترکیب پسماند جامد شهری، صورت گرفت. نتایج آنالیز چاه آب اندک بالاتر بودن غلظت برخی عناصر تحت بررسی را در پایین‌دست نزدیک محل دفن، نسبت به حد استاندارد سازمان بهداشت جهانی (2008) جهت آشامیدن را نشان داد. نتایج آنالیز خاک نیز اندک بالاتر بودن غلظت برخی عناصر را در و پایین‌دست نزدیک محل دفن (در جهت شیب لایه‌ها)، نسبت به حد استاندارد کانادا (2004) جهت کشاورزی را نشان داد. آنالیز چاه آب‌وخاک در نمونه شاهد و نمونه پایین‌دست (دورتر از محل دفن) غلظت عناصر را نزدیک به هم و در حد نرمال نشان داد. در ارتباط با آنالیز شیرابه، متغیرها با استاندارد آبیاری و کشاورزی سازمان کنترل آلودگی کیفیت آب (2011) هم خوانی ندارد. درنهایت می توان گفت، نتایج آنالیزها تأثیرات گسترده و بحرانی دفن بر محیط‌زیست خصوصاً محیط زیست شهری را نشان نداد. پرونده مقاله

The need for a comprehensive management of sustainable environmental development is more than ever due to the growth of population and more waste production. In order to achieve the goals of sustainable development, environmental assessment before, during and after each project is needed. The purpose of the environmental impact assessment is to ensure that managers and experts meet the goals set in a project in accordance with government and environmental regulations. The first step towards achieving this goal will be exploring the study area. In this research, the Leopold matrix was used for environmental assessment of landfill location in Yazd. Environmental assessment was done on the problems resulting from landfill on the environment and living organisms of the area in the environmental assessment area by visiting the field of the current landfill site of Yazd. The total score of the results of the Leopold Environmental Assessment Matrix related to the current landfill site was -214. Therefore, it is possible to carry out management solutions to improve the status of the current landfill. By performing location studies using the hierarchical analysis method, zone one was designated as a suitable landfill site. The soil permeability gradient curve of the selected region was prepared and the soil type of this region was clayey silt. Which will be suitable for landfill. پرونده مقاله

Natural hazards have always changed the environment and threatened human life. In this regard, geological hazards including earthquake, subsidence, etc. are the most destructive natural factors that our country, Iran, is affected by them. That is why planning and preparation to deal with these catastrophes is essential. Aerial communication networks have an important role in the relief operation because of the rapid access after an earthquake. The purpose of this study, is locating an appropriate site of air rescuing after a casualty. Hierarchical analysis method was used for weighting after determining the effective indicators in locating; including the area of open space of the site, access to dense and vulnerable texture, service user and main arteries. After preparing the final map, zones of avoidance were announced. The evaluation method similarity to ideal option in the software environment of the spatial information system was used to select the final site. This study is an applied research because of its aim and it has been carried out using descriptive - analytical method. According to obtained results, three squares called Sanat, Saheb-a Zaman and Farhang were selected as suitable sites. Sanat square was identified as an appropriate site because of having the highest score according to defined criteria پرونده مقاله