فهرست مطالب

مجله مدیریت مخاطرات محیطی
سال چهارم شماره 3 (پاییز 1396)

  • تاریخ انتشار: 1396/07/01
  • تعداد عناوین: 7
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  • حسین محمدی* صفحات 211-213
  • سید رضا مهرنیا* صفحات 215-229

    در 12 نوامبر 2017 میلادی (21 آبان 1396 خورشیدی)، زلزله مهیبی با بزرگی 3/7، مناطق غرب ایران در حوالی شهرهای مرزی ازگله، سرپل ذهاب و قصر شیرین را به شدت تکان داد و موجب کشته شدن بیش از 600 نفر و آسیب مالی و جانی صدها تن در استان کرمانشاه شد. در این تحقیق با بهره گیری از پایگاه اطلاعات لرزه ای سازمان زمین شناسی آمریکا و کاتالوگ زمین لرزه های استان کرمانشاه (2017 - 1900 میلادی)، پیش بینی بازنگرانه با استناد به مفهوم و نتایج سری اعداد فیبوناچی ارایه شده و در پی آن، مخاطرات منطقه از دیدگاه مکانی با تاکید بر شناسایی و معرفی پتانسیل های لرزه ای غرب ایران بررسی شده است. کاربرد توالی فیبوناچی برای دستیابی به سازوکار توزیع غیرخطی زلزله ها، سابقه دارد، اما نتایج این پژوهش به طور مشخص بیانگر وجود روابط مکانی بین زلزله های سده گذشته با پیدایش چشمه لرزه ای اخیر در ازگله است. همچنین براساس دستاوردهای این تحقیق، توزیع پس لرزه های رویداد 7/3 ازگله در اشکال مارپیچی و گنومون طلایی انجام گرفته و آرایش مکانی داده های کاتالوگ به شکل مثلث طلایی (با زاویه راس36 درجه) و دایره طلایی (با کمان 137/5درجه) بوده است. بدین ترتیب با استفاده از روش فیبوناچی، ضمن اثبات طبیعی بودن منشا زمین لرزه های غرب ایران، نظم رویدادهای ثبت شده از سال 1900 میلادی تا کنون بررسی شده و شواهدی دال بر پیش بینی مکانی زلزله های این استان ارایه شده است.

    کلیدواژگان: استان کرمانشاه، الگوی مکانی، توالی فیبوناچی، زلزله
  • سیامک حاجی یخچالی، مجید پرچمی جلال، محمدکاظم اسدی* صفحات 231-246
    با توجه به افزایش روزافزون مخاطرات محیطی ناشی از فعالیت های صنعتی، توجه بیش از پیش به جوانب این موضوع و تلاش برای فعالیت های پایدار سبب افزایش اهمیت مسایل زیست محیطی شده است. هدف این تحقیق یافتن معیارهای موثر در انتخاب تامین کنندگان کالاهای پروژه های نفت و گاز با مدنظر قرار دادن اهمیتی است که این تامین کنندگان برای خطرهای محیطی حاصل از عملکرد محصولاتشان قایل اند. با مطالعه عملکردهای گذشته و بازنگری آموخته های پروژه های اجراشده و نظرخواهی از خبرگان و صاحبان تجارب اجرایی، نکات اساسی در زنجیره تامین کالا که با عملکردهای محیطی ارتباط مستقیم داشتند، شناسایی شده و معیارها مشخص شد و با ترکیب دو روش فرایند تحلیل سلسله مراتبی (AHP) و روش ترجیح براساس مشابهت به راه حل ایده آل (TOPSIS) فازی و انجام مقایسه های زوجی برای تعیین اوزان هر کدام از معیارها و مقایسه هر کدام از تامین کنندگان با توجه به معیارهای شناسایی شده، در نهایت معیارهای اصلی و اثرگذار برای لحاظ در انتخاب یک تامین کننده سبز شناسایی شد. نتایج این تحقیق قابل کاربرد در مدل های مورد استفاده کمیته های تصمیم گیرنده در انتخاب پیمانکاران و تامین کنندگان کالاهای نفت و گاز است که تاثیر بسیار مهمی در سبز کردن زنجیره تامین کالا می توانند داشته باشند.
    کلیدواژگان: روش های تصمیم گیری چندمعیاره فازی، زنجیره تامین کنندگان سبز، محیط زیست، مخاطرات محیطی، نفت و گاز و پتروشیمی
  • حمید برقی*، آسیه حسنی نژاد، محسن شایان صفحات 247-262

    حفاظت از محیط زیست و منابع آن، یکی از ابعاد مهم توسعه پایدار است. افزایش مصرف مواد شیمیایی و ناآگاهی کشاورزان در استفاده از این مواد، موجب ناسالم شدن محصولات کشاورزی و آلودگی محیط زیست روستا شده است. هدف این مقاله از یک سو، بررسی آثار تخریبی ناشی از کاربرد سموم شیمیایی در کشاورزی و از سوی دیگر، معرفی راهکار برای بهبود محیط زیست روستاهای شهرستان زرین دشت است. روش پژوهش از نوع توصیفی- تحلیلی و پیمایشی است. جامعه آماری شامل 19622  N=کشاورز ساکن 15 روستای شهرستان زرین دشت است . برای تجزیه و تحلیل داده ها، از نرم افزار spss و روش های آماری مانند همبستگی پیرسون و همچنین از رویکرد آماری مدلسازی معادلات ساختاری (SEM) و نرم افزار Warp PLS 4 به منظور اجرای ساختار مدل استفاده شد. نتایج تحقیق نشان داد که بین اثرگذاری سموم شیمیایی و آلودگی های محیط زیست، براساس ضریب همبستگی پیرسون در سطح اطمینان 99 درصد رابطه مستقیم و معناداری وجود دارد. همچنین برپایه نتایج معادلات ساختاری، سموم شیمیایی سبب آلودگی های زیست محیطی شده است. در این زمینه متغیر ترویج، بر استفاده صحیح از سموم اثرگذار است و متخصصان کشاورزی تاثیر معناداری بر ریسک گریزی کشاورزان در استفاده از سموم شیمیایی دارند. همچنین فرضیه تاثیرگذاری واردات خارجی سموم بر خطرهای اقتصادی تایید شد؛ زیرا اغلب سموم شیمیایی به کشور وارد می شوند و ارز خارجی آنها از دیگر زمینه های سودمند خارج می شود. این موضوع نه تنها برای کشاورزان، بلکه برای تمام افراد جامعه گران و پر هزینه است؛ بنابراین واردات سموم بر خطرهای اقتصادی تاثیر گذار است.

    کلیدواژگان: روستاهای زرین دشت، سموم کشاورزی، محیط زیست، معادلات ساختاری (PLS)، نهاده ها
  • مصطفی کرم پور*، جعفر رفیعی، ایوب جعفری صفحات 263-279

    امواج گرمایی یکی از بلایای طبیعی و آب و هوایی است که آثار زیانباری بر محیط زیست دارد. در این پژوهش سعی شد امواج گرمایی منطقه غرب ایران شامل چهار استان ایلام، خوزستان، لرستان و کرمانشاه با شاخص دمایی و شاخص رطوبت شناسایی شده و نیز دوره بازگشت این امواج با استفاده از تابع توزیع گمبل مشخص شود و در نهایت الگوهای همدیدی موثر در آن شناسایی شود. براساس نتایج، مجموع فراوانی امواج گرمایی استخراج شده در دوره آماری مورد مطالعه 143 موج است که از این تعداد، 70 موج در دوره گرم و 73 موج در دوره سرد سال رخ داده است. بررسی ماهانه امواج گرمایی نشان می دهد که بیشترین میزان وقوع امواج در ماه فروردین بوده است. تحلیل سینوپتیک رخداد امواج گرم در طی فصول نشان می دهد که در فصل گرم، زبانه های کم فشار گنگ تا نواحی مرکزی ایران کشیده شده و حتی زبانه های آن تا شمال شرق ایران نفوذ کرده است. در زمان رخداد این امواج، در سطح زمین کم فشارهای حرارتی متعددی بر روی شاخ آفریقا، اروپا، عراق و عربستان بسته شده و زبانه های کم فشار تشکیل شده روی عربستان قسمت های جنوب، جنوب غرب و بخش هایی از غرب ایران را تحت تاثیر قرار داده است. بررسی شرایط همدیدی امواج گرمایی دوره سرد نشان می دهد که منطقه تحقیق، جلو جبهه گرم قرار داشته و نفوذ هوای گرم به منطقه سبب افزایش دما در این هنگام از سال شده است.

    کلیدواژگان: تابع توزیع گمبل، تحلیل سینوپتیک، دوره بازگشت، غرب ایران، موج گرما
  • عباس ممقانی بنابی، ابراهیم مقیمی*، مجتبی یمانی، منصور جعفربیگلو صفحات 281-302
    یکی از مباحث مهم در مدیریت بحران های محیطی شهرها، بحران های ناشی از مخاطرات ژیومورفولوژیکی در عرصه های شهری است. این بحران ها به علت استقرار و گسترش فعالیت های انسانی در عرصه های شهری در حال افزایش است. از این رو در پژوهش حاضر، با شناسایی فرایندها و پدیده های ژیومورفولوژیک در پهنه های گسترش یافته شهر مراغه در بین سال های 96-1363، به بررسی محدودیت ها و قابلیت های ژیومورفولوژیک این شهر پرداخته شد. محدودیت های ژیومورفولوژیکی در این پژوهش در قالب دو مبحث محدودیت های ناشی از فرایندهای دامنه ای و فرایندهای سیلابی بررسی شد. در این زمینه، داده های لازم از منابع مختلف و همچنین داده های سنجش از دور جمع آوری شده و با استفاده از سیستم اطلاعات جغرافیایی، به لایه های اطلاعاتی لازم تبدیل شدند که شامل لایه های زمین شناسی، تکتونیک و لرزه خیزی، دما، بارش و رطوبت، فرسایش خاک، کاربری اراضی و پوشش گیاهی، طبقات ارتفاعی، شیب، جهت شیب، فاصله از آبراهه ها و نوع خاک است. در ادامه برای هم طیف کردن لایه ها، با استفاده از تیوری منطق فازی، لایه ها استاندارد شدند. برای استخراج ارزش نسبی هر یک از لایه ها در مشخص کردن پهنه های ژیومورفولوژیکی، از روش تحلیل سلسله مراتبی (AHP) استفاده شد. نتایج تحلیل سلسله مراتبی نشان می دهد که در منطقه تحقیق، نقش سازندهای زمین شناسی در رخدادهای ژیومورفولوژیکی پررنگ تر است. پس از ارزش گذاری نسبی لایه های اطلاعاتی، روی هم گذاری لایه ها با استفاده از روش وزن دهی جمعی ساده (SAW) صورت گرفت. نتایج نشان می دهد که شمال شرق شهر مراغه از نظر فرایند دامنه ای و سیل خیزی دارای پهنه های مخاطره آمیز فراوانی نسبت به دیگر قسمت هاست. همچنین به منظور بررسی شدت خطر در قسمت های گسترش یافته شهر در دهه های اخیر، ابتدا حد گسترش فیزیکی شهر در سال های 1363 تا 1396 از تصاویر ماهواره ای لندست استخراج شده و پس از مطابقت با نقشه های کاربری اراضی، روند گسترش فیزیکی شهر در دامنه زمانی مورد نظر بررسی شد؛ بدین منظور از روش کراس تب (Crosstab) استفاده شد. نتایج بررسی روند گسترش شهری در دامنه زمانی مورد نظر نشان می دهد که بیشترین گستردگی شهری در پهنه هایی بوده است که خطرهای ژیومورفولوژیکی بیشتری دارند و این نیازمند مدیریت بیشتر در جهت دهی توسعه فیزیکی شهر مراغه در پهنه های کم خطر است.
    کلیدواژگان: توسعه فیزیکی، شهر مراغه، مخاطرات ژئومورفولوژیک
  • مصطفی عزیزخانی، میثم ارگانی*، فاطمه مافی صفحات 303-317
    بیماری آنفلوانزای پرندگان [Influenza Avian] یکی از بیماری های مهم تنفسی و واگیردار پرندگان است که دارای قدرت انتشار سریع است. در حال حاضر حدود 33 پاندمی از آنفلوانزای پرندگان از نوع فوق حاد H5 و H7 از دهه 1950 تا 2017 در جهان پدید آمده است. بزرگ ترین پاندمی نسبت به بقیه تا حال حاضر پاندمی H5N1 در 63 کشور و در حال حاضر H5N8 بوده است. همانند پاندمی H5N8 در سال 2016 در 1996 سویه فوق حاد در گواندونگ چین به معدوم شدن حدود 250 میلیون قطعه طیور یا پرنده وحشی در 63 کشور منجر شد. بیشتر کشورها در این شرایط، سیایت معدوم سازی را در صنعت طیور به کار می گیرند تا به ریشه کنی سویه های فوق حاد آنفلوانزا دست یابند. هرچند کشورهایی نیز از راهبرد برنامه واکسیناسیون برای کنترل بیماری استفاده می کنند. ویروس آنفلوانزای پرندگان و انتقال آن به انسان یکی از دغدغه های اصلی پژوهشگران در سال های اخیر بوده است. شناخت مناطقی از کشور که از شیوع ویروس آسیب پذیرترند به کنترل و پیشگیری از شیوع ویروس در مراحل مختلف کمک زیادی خواهد کرد. براساس مطالعات انجام گرفته عوامل موثر اصلی بر شیوع ویروس مذکور عبارت اند از نزدیکی به رودها، دریاچه ها، باتلاق ها، جمعیت، مراکز پرورش طیور، روستاها، بارندگی، دما و میزان باد شناسایی شدند. در نهایت به ترتیب استان های تهران، البرز، قم، اصفهان، قزوین، گلستان، گیلان بیشترین خطرپذیری را دارند. پژوهش حاضر از نوع تحلیلی در سال 1395 برای کل کشور ایران انجام گرفت.ابتدا عوامل موثر شناسایی و با نظر خبرگان وزن دهی شده و به چهار دسته تقسیم شدند؛ سپس داده ها با استفاده از منطق فازی تحلیل شدند؛ توابع عضویت فازی برای هر دسته تعریف شد؛ با تعریف 36 قانون مختلف تمامی حالت های موجود با روش ممدانی بررسی شد. هدف این پژوهش، شناسایی مناطق خطرپذیر ایران در برابر شیوع ویروس N5H8 با توجه به عوامل موثر، بود. نقشه پهنه بندی خطر به دست آمده با نمونه های گزارش شیوع ویروس آنفلوانزای پرندگان مطابقت مناسبی دارد.
    کلیدواژگان: آنفلوانزا در پرندگان، سیستم اطلاعات جغرافیایی، منطق فازی، همه گیرشناسی
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  • Pages 211-213
  • Seyed Reza Mehrnia * Pages 215-229

    A borderline destructive earthquake (M: 7.3) hints the urban regions of Ezgeleh, Sar-Pol-Zahab and Ghasre-Shirin in Kermanshah province  (western part of Iran) and left more than 600 kills, hundreds of injured peoples and building damages in 12 November 2017. In this research, I have used Fibonacci numbers to set 117 years epicenters (USGS catalogue, 1900-2017) based on a post predictive model contained the main and aftershocks of this region. This scenario reveals unique geometrical associations (30 and 137.5 degrees) between the recent epicenters and more than one century seismic onsets according to triangular-circular distributions. The primary results showed that Kermanshah epicenters tend to be patterned by golden shapes and golden angles in self-organized geometrical distributions. Also many of Ezgeleh aftershocks illustrate spiral distribution that is because of their inherent association with fault systems. As the final result, a forecast map issued in the end of research to realize the spatial hazard assessments and prognosis of seismic potentials based on Fibonacci simulation of the aftershock locations.    

    Introduction

    Leonardo Fibonacci was a famous Italian scientist introduced a numerical sequence was known as “Fibonacci Number” in his book released in 1202 [1]. This is a series of numbers where a number is found by adding up the two numbers before it. Starting with 0 and 1, the sequence goes 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, and so forth. Written as a rule, the expression is:
     
    (1)
    Where, Fn is obtained Fibo-number and Fn-1 , Fn-2 are two sequences before Fn respectively [2].
    Both real sets and integer sequences of Fibo-numbers have impressed many of natural phenomena and therefore known as the mathematical keys for terrestrial and infra-terrestrial solutions. For instance, earthquakes and climate changes are two main threats have close relationships with golden spiral distribution as a result of spatio-temporal evolutions in nature.
    A simple sequence of Fibo-numbers is shown as below:1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, …, Fn
    In above sequence, a ratio of (Fn/Fn-1) gives constant value (golden ratio, Ҩ) equal with 1.618.

    (2)
    This ratio has important roles in bio-creatures. Also it plays a global game in galactic strategies for expansion. From geological point of view, many of mantle related geodynamics have been regulated by Ҩ to prompt the self-organized patterns of the crustal appearances. As a rule of geometrical properties, golden ratio gives rise to producing golden shapes such as triangles, circles and rectangles. Golden triangles have two isosceles with exactly 36 degree of angle between the isosceles. Golden circles consist of two unequal arcs which one of them has golden angle equal with 137.5 degrees. Golden rectangles are usual natural patterns mostly studied by geoscientists [3]. As it is shown in Figure1, seismic events and their focal mechanisms are relevant examples from golden rectangles with affinity of the events to spiral distributions.
     
    Fig. 1. Spiral distribution of natural events (such as earthquakes) in golden rectangles
    A simple consideration for geometrical behavior of earthquakes is golden triangular distribution which can be modified as golden Pentagon-Gnomons and extended toward golden decagons (resemble to circles) around the huge events (such as Ezgeleh earthquake) (Figure2).
     
    Fig. 2. Triangular-Decagonal distributions in nature (ratio a/b = Ҩ)

    Methodology

    Here, a Post Prediction of Earthquake (PPE) is well done by applying Fibonacci numbers into USGS catalogue. Natural earthquakes usually distributed in spirals and used for spatial interpretations [3]. At least, 117 years backgrounds of seismic events (USGS, 1900-2017), provide this unique opportunity to answer the question of “where is the next destructive earthquake in the regional or local scales?”
    It means, with a dense and accurate catalogue, scientists will be able to predict location of the future earthquakes and Fibonacci-based techniques have closely impressions to revealing the imitation games of the nature as an important key for earthquake prediction [3,4]. According to PPE, a main shock event not only initialized post seismic processes, but is relevant to middle or long term catalogues as a regional Fibonacci variable. In practice, seismic databases from west of Iran including epicenters [5], interferogram [6] and structural lineaments [6,5], have been gridded by GIS facilities to illustrate the possible golden peculiarities of the recent earthquakes.            

    Discussions

    Ezgeleh event ( 2017-11-12) seems to be initial point for long ranges of post seismic events, which many of them should be considered as Ezgeleh aftershocks. In figure3, a significant spiral distribution can be seen in near territory of Ezgeleh epicenter. Also in this Figure, we can find an obvious golden circle within the radius lesser than 20 Km from main shock event.
     
    Fig. 3. A: aftershock spiral distribution (golden rectangle) next to golden circle of the main and before shock events   B: geometrical properties of golden triangle in lesser 20 Km from main shock epicenter (Red Point).
    As a primary result, above mentioned facts indicate a natural distribution of all seismic events in western part of Iran. For the second, spatial assessment of 117 years magnitudes (since 1900), provides spatial hazardology of the Kermanshah earthquakes based on post predictive algorithm [7]. In other word, Ezgeleh earthquake is a dependent spatial variable to post seismic events as well as its dependency to foreshocks in the catalogue.

    Conclusion

    -This research introduced a Fibonacci method for evaluation and analysis of 117 years Kermanshah earthquakes as an active seismic zone in western part of Iran.
    -  Spatial hazardology of Ezgeleh event, indicates a long distance association of Kermanshah post-seismic traces with other Seismogenic traces within 100 Km from 7.3 main shock epicenter (Figure4).
    - Rectangular distribution of earthquakes, make an easier and accurate forecasting of future events (usually means aftershocks) and other post seismic activities originate from Ezgeleh event in golden radiuses (Figure 5). 
     
     
    Fig. 4. Regional golden circles around Ezgeleh seismic event (Nov. 2017) according to regular (blue) and random (gray Fibonacci sequences) [8] .
     
    Fig. 5. A Fibonacci based spatial hazardology of Ezgeleh earthquake (12 Nov. 2017)

    Keywords: earthquake, Fibonacci sequence, Kermanshah province, Spatial hazardology
  • Siamak Hajiyakhchali, Majid Parchami Jalal, Mohammadkazem Asadi * Pages 231-246
    Considering the increasing environmental hazards caused by industrial activities, more attention has been paid to the aspects of this issue and the efforts to carry out sustainable activities, which has made it very important to pay attention to environmental issues. The purpose of this research is to find the effective criteria for selecting suppliers of oil and gas products, considering the importance of these suppliers to the environmental hazards resulting from the operation of their products. By studying the past functions and reviewing the lessons, which have been learned from the implemented projects, and taking into account the experts and owners of the executive experience, key points in the supply chain that were directly related to the environmental functions were identified, and the criteria were recognized and combined with two methods of the process of Hierarchical Analysis (AHP) and the preferred method based on similarity to the fuzzy TOPSIS solution and performing paired comparisons to determine the weights of each of the criteria and the comparison of each of the suppliers according to the criteria identified in the end of the main criteria and Effective in identifying the choice of a green supplier. The results of this research can be applied in the models used by decision makers to select contractors, oil suppliers, and gas products, which can play a very important role in greening the supply chain of goods. Introduction It is clear that in the project procedure, after decision-making and design, efficient design can provide satisfactory results regarding to the purposes and hypotheses of the study. However, can modern techniques, methods, accurate design, and prediction of various factors lead to the ultimate goal? Of course the answer is negative, because the mental and physical efforts can lead to efficient results when it is possible to show everything in practice. The accuracy and efficiency of planning should be indicated in practice; otherwise, all of them will lead to failure. Therefore, in addition to accurate planning and design, we should attempt to find a way to measure the results and find a solution to deal with problems and deviations. No system can work and achieve its highest capacity without control. All of us are familiar with chaos and delay, which is resulted to the lack of control in traffic systems. Uncontrolled water or electricity network systems can cause problems or decrease efficiency. If a building system is efficiently designed but progresses without any control, it may lead to delays or replacement. This study aims to utilize theoretical models and methods in practice to achieve new methodology in project progress measurement. Then, important points in this regard are taken into considerations and finally, theoretical foundations of methodology design are presented. The present research intends to examine whether it is possible to combine decision-making methods that can be used to provide green supply suppliers in the supply chain of the Pars Oil and Gas Company with the intention of reducing environmental risks, including reducing environmental pollution. Then, by combining AHP and TOPSIS fuzzy methods, and applying green criteria, it provides a framework for ranking suppliers in the supply chain and selected the most suitable supplier for cooperation in the supply chain. Materials and Method In this research, the indicators and criteria for selecting green suppliers were collected through library studies. In particular, six major indicators were used in this study. Then, by designing a pairwise comparison questionnaire (questionnaire 1), these indicators were compared in two groups. The data from this questionnaire are included in the fuzzy AHP model to become numerical weights for the indices. In the next stage, another questionnaire (questionnaire number 2) is designed in which decision makers or respondents compare the suppliers with regard to the indicators. The data of this questionnaire and the weights obtained by the fuzzy AHP model are included in the fuzzy TOPSIS model, so that the suppliers, at the end, are prioritized according to the green criteria. The problem of choosing green suppliers for solving multiple problems can be solved by multivariable decision analysis methods. In this research, the combination of two methods of AHP and TOPSIS has been used to achieve the answer. Since the data were collected inaccurately, and sometimes qualitatively, the use of definite methods can lead to incorrect results. Therefore, for fuzzy logic, the following methods are combined to obtain accurate results. Conclusion In this research, two methods of fuzzy AHP and TOPSIS, which are fuzzy multi criteria decision-making methods, are used to rank green suppliers that play a key and undeniable role in reducing environmental hazards and sustainable development in the supply chain used. Initially, six sources of green supply choices were identified by studying the literature. The basis of the questionnaire was compilation: comprehensive environmental management, hazardous material management, green innovation, green image, green product and pollution control. After collecting data from the experts, the Fuzzy AHP method was used to determine the significance or weight of the criteria and the green innovation indicator was identified as the most important indicator. Then, the suppliers of the company were ranked by using the fuzzy TOPSIS method. This research with a semantic approach can be the first step in the implementation of the green supply chain in service organizations and other institutions.
    Keywords: Environmental hazards, Green supply chain, Fuzzy multi-criteria decision-making methods
  • Hamid Barghi *, Asieh Hassaninezhad, Mohsen Shayan Pages 247-262
    Introduction

    Risk is a form of entrepreneurship [18]. Environmental hazards are sudden or gradual occurrences of the natural or human origin, which is threatened by the health and safety of a wide range of habitats and human habitats [8]. Many of the natural disasters are occured in the rural areas of the country, which , causes many damage to the villagers, due to the weakness of facilities in these areas [15]. The use of chemical pesticides to control agricultural pests causes unpredictable damage to human health, other living, and environmental conditions. In the same way, in the last two decades, the use of microbial agents have been very much taken into consideration, which are controlling pests that have lower levels and have a narrower and more specific range of effects on target insects [10]. Toxins and chemical fertilizers come from agricultural land to water sources include about 15 percent of the cause of water pollution. Agricultural pesticides directly affect water quality, but in the case of organic fertilizers, when these fertilizers enter large amounts of soil, the excess is fed into the rivers and lakes through drainage waters and provides rapid growth of algae food [1]. In order to prevent the destruction and destruction of their agricultural products, which are costly, and time-consuming, as well as due to population growth and constraints on the production of various food products, different methods for controlling plant pests are used. Among these methods, one of the most popular are the pesticides. In conventional agriculture, more than 300 kinds of hazardous synthetic chemical compounds, such as toxins and chemical fertilizers, are used to control pests, diseases, weeds and soil fertility. In addition to contaminating water, soil and air, some plants enter and remains as a residue of pesticides in agricultural products and is transmitted to the human body during the process of consumption, which can lead to endemic diseases like cancers and allergies in humans [26].  

    Research method and analysis

    This research follows a descriptive survey in its proposed method. Since most of the residents of Zarindzht City are engaged in agriculture (32% in the agricultural sector and 3.5% in the gardening sector), the statistical population of this study are farmers of 15 villages of this city. The number of members of the statistical society is 19622 people, using the Cochran formula and at 95% confidence level, the number of members of the sample, 377 household heads were selected as the sample population for answering the questionnaires. Therefore, a stratified random sampling method was used to obtain the logical volume of the sample, taking into account the villages of Zarindsth city (15 villages) as statistical classes. Discussion In this research, Pearson correlation coefficient was used to determine the effect of chemical pesticides (independent variable) on the environment of the villages (dependent variable). As it can be seen in the results, the use of chemical pesticides in agriculture has had an impact on the environment and the health of living creatures. The poisoning of agricultural workers with chemical pesticides is one of the most common occupational hazards. The excessive use of these pesticides by farmers has had damaging effects on the environment, and in particular on the environment of the village. The aim of this study was to assess the effects of agricultural pesticides on the environment of the villages.

    Conclusion

    According to the results of this study, the use of chemical pesticides in agriculture causes environmental pollution. These contaminations affect the environment and cause its destruction. In this regard, providing educational programs to raise farmers' awareness of the amount and correct use of pesticides is advised. The Ministry of Agriculture can help farmers to properly use chemical pesticides and appropriate spraying time. Therefore, according to the mentioned variables, promoting propagation has a constructive role in the knowledge of farmers about the harmful effects of pesticides on agricultural products. The authenticity of the assertion confirms the extension of the correct use of poisons. According to the presented materials, it can be said that today the use of high quality agricultural inputs and pesticides has been unbalanced and excessively damaging to aquatic, plant, animal and human ecosystems. Therefore, the use of fertilizers and chemical pesticides on the environment has caused irreparable damage. This is particularly noticeable in rural areas, which account for the vast majority of agriculture and natural areas of the country. Considering the importance and position of the rural community in the country and the challenges this community faces in its development process, recognizing and analyzing the characteristics of rural development planning in the country and addressing all aspects of it is imperative.

    Keywords: Agricultural toxins, Environment, Inputs, (Structural equations of PLS), Zarin Dasht villages
  • Mostafa Karampoor *, Jafar Rafiee, Ayob Jafari Pages 263-279

    Heat wave has harmful effect on environment and human life. First of all, this research identifies the heat wave of four provinces of Ilam, Kermanshah, Lorestan, and Khuzestan, for the period between 2000 and 2010. This study uses the heat index, and the return period of this wave using the Gambel distribution function. According to obtained results, total redundancy of extracted heat waves was detected as 143,  which 70 waves of this amount have been in warm period and  73 waves in cold period of the years. Monthly process of thermal waves shows that the highest wave was occurred in the month of Farvardin. Process the maps of surface pressure of the earth during warm period of the year shows that low pressure tabs of Ganges had pulled near the central Iran, even its tabs in to north east of Iran and the center of Iran is low-pressure heat. In time of occurrence of this wave, there was pressure heat occurred in the earth surface from Horn of Africa, Europe, Iraq, and Saudi Arabia. Hence, the low pressure tab of Saudi Arabia has been affected southern, south-western, and western parts of Iran. Synoptic Process of the heat wave condition shows that area is located in front of the hot air and the influence of hot air on the area has caused the temperature rise at this time of the year.

    1.Introduction

    Heat wave is one of the most important natural disaster and weader conditions. That has harmful effect on environment and human life. heat wave is a warm period that is stable for several days to several weeks and maybe com with violent wet. Generally, increasing the temperature degree in extreme heat waves can cause the destruction of agriculture product and loss communities of the plant societies and ecosystems and also human death. Heat wave with Decrease the Photosynthesis measure in farm plants cause deacres the plants prrformance in measure product of the seed and fruit. One heat wave in could period of year  can have violent Damage on garden product from the way of hasty awaking in fruit tree and  deacres of Fertility of tree. according to the importance and effect of tempreture on inviromental  condition and also the roles on big and small  plans,  pattern modeling the Temperature  behavior, sience circle specially in the recent year had a great attenticn .

    2.Methodology

    in this research first of all identify the  heat wave of  the west of iran area . that consist of four state ilam Kermanshah lorestan and Khuzestan  that we  identify  and return period of this wave with the using of Gambel distribution function and finally similar pattern    concentrated on area in  days who introuduce heat wave for this reason. Thereupon we recive the datas on surface  of earth from the Meteorological Organization for the period of time we ricive between 2000 to 2010 and then by this data and the using of  heat index and hum index (this tow index in order to using given apparent temperature is by Meteorological Service of Canada). identified heat wave In Excel spreadsheet software for this priod  of time is   and statistic Analysis is done  by Gambel distribution function that is suitable Distributive in order to study  Phenomena climate extremes. Then the Synoptic Analysis of wave of statistic we Analysis of the similar heat wave for this work were need a Representative days for per  period of heat wave that we choice this Representative days   at the middle of the wave Because is For each wave has a peak day that  after that  the temperature decreases again. Approximately 85% of this threshold or the peak temperature that day was the middle. after assiynmen  of  represent day  we astart make  the maps of dffernt level of the atmosphere by receive of the datas of the noa website. this maps consist of  geo potential height and moving tempreture.


    Index heat =  –42/379 + 2.04901523T + 10/14333127Rh – 0/22475541T a Rh – (6/83783 × 10 –3 T a2 ) – (5/481717 × 10 –2 Rh2 ) + (1/22874 × 10 –3 T a2 Rh) + (8/5282 × 10 –4 T a Rh2 ) – (1/99 × 10 –6 T a 2 Rh2 )


    (1)

    Humindex =Ta+H
    H =/05555(e-10)
    e= 6/11 exp(5417/7530×(( )-( )))
    (2)

    3.Results and discussion

    Total heat waves extracted wave was detected in the study statiscic period 144  that this nummbers 70 in warm period and  73 waves in cold period of the years had happened. The durability of these waves  distincted wave two to 25 days. most occurrence waves of  tow, three, and  four allot of ten day wave with return period of 25 year with the average of apparent temperature of 55.5 C period return of the wave of 15 day and upper 50 year and more was calculated. Monthly process of therm waves shows that during of 11 year satistic(2000-2010). Highest of waves occurrence was in farvardin month and also in The event  heat waves in could period of year and more event is in winter season.  Plenty of waves in this season more is in day and esfand month. Process the maps of pressure of surface of the earth during the warm period of the year shows that Low pressure tabs of Ganges had pulled near the centeral iran, even its tabs in  to north east of iran and the center of iran is low-pressure heat. In time of occurence of this wave in the earth surface of the –pressure heat on the branch of the Africa, Europe. araq and saudi Arabia had been closed. That are from the kind of termal and showing the violent heat that is excit at the surface of the earth. Low pressure of Saudi Arabia one of the most important effective of wave occurrence of the heat That are from the kind of termal and showing the violent heat that is excit at the surface of the earth. Low pressure of Saudi Arabia one of the most important effective of wave occurrence of the heat That tabs effectet the south  southwest and  the parts from the west of iran. Synoptic Process of the heat wave condition shows that plan pattern pressure surface of the earth and height topografhy in the west of iran is ahigh-pressure pattern. Also, shows that area is located in front of the hot air and the influence of hot air on the area has caused the temperature rise at this time of the year.

    Keywords: heat wave, synoptic analysis, heat index, West of Iran
  • Abbas Mamaghani Bonabi, Ebrahim Moghimi *, Mojtaba Yamani, Mansour Jafar Beiglou Pages 281-302
    One of the important issues in the management of urban environmental crises is the geomorphological crises in urban areas. These crises are increasing because of human activities in urban areas. Therefore, in this study, the constraints and the capabilities of Maragheh have been assessed by identifying of the geomorphological processes and phenomena in the developed parts of Maragheh during the yeas of 1984 to 2017. Geomorphologic constraints in this study have been discussed in two categories of constraints due to hillslope, and flood processes. For this purpose, the needed data were gathered from different sources, as well as distant evaluation. Then, these data were changed into the necessary information layers by using the Geographical Information System (GIS), which included the geological, tectonic, seismicity, temperature, humidity and rainfall, soil erosion, the application of the land and vegetation, height classes, slope, the distance from the water ducts, and soil type information layers. Later, to align the information layers with each other, the layers were standardized by using Fuzzy Logic Theory. To get the relative value of each layer in determining the geomorphological areas, the analytic hierarchy process (AHP) was used. The results obtained from the analytic hierarchy process indicates that in the studied region, the role of the geological structures in the geomorphological events is remarkable. After the relative evaluation of the information layers, the super-positioning of the layers was done by using Simple Additive Weighing (SAW). The findings reveal that the northeastern part of Maragheh has more possibility of hillslope process and flooding point of view than the other parts. In addition, in order to study the hazard extent in the developed parts in the recent decades, firstly, the extent of the physical development of the city during the years of 1984 and 2017was extracted through Landsat Satellite Pictures. Then, after matching with the land application maps, the process of the physical development of the city was studied in the above-mentioned period. The Crosstab Table Method was used for this purpose. The obtained results from the study of the process of the city development in the above-mentioned period showed that the most city development has been occurred in the areas that possess the higher geomorphological hazards and this needs better management of directing the physical development of Maragheh in the less hazardous areas.
    Keywords: Maragheh City, geomorphological hazards, physical development
  • Mostafa Azizkhani, Meysam Argani *, Fatemeh Mafi Pages 303-317
    AI (Avian Influenza) is one of the most important respiratory, and contagious pathogens in poultry that has fast release power. At present, around 33 pandemics of H5 and H7 over-the-counter influenza have emerged from the 1950s to 2017. The largest pandemic is H5N1 pandemic in 63 countries, and now it turnes to H5N8. Like the H5N8 pandemic in the year 2016, the Severe strain in Guandong, China, resulted in the extinction of about 250 million poultry or wild birds in 63 countries. Most countries, in this context, use deforestation policy in the poultry industry to achieve the eradication of the extra-influenza strains. However, countries also use the vaccination strategy to control the disease. The prevalence of Avian Influenza virus and its transmission to human have been one of the main concerns of researchers in recent years. Identifying the country’s regions that are more vulnerable due to the prevalence of the virus will help control and prevent its prevalence at various stages. This study aimed to identify high-risk regions in Iran for the prevalence of N5H8 virus according to effective factors. This analytical study was conducted in 2016-2017 for IRAN. First, the affective factors were identified, using experts’ opinions, they were weighted, and classified into four categories. Then, the data were analyzed using fuzzy logic. The fuzzy membership functions were defined for each category. Defining 36 various rules, all the existing states were evaluated applying Mamdani's method.  According to the conducted studies, the main factors affecting the prevalence of the mentioned virus included: proximity to rivers, lakes, and marshes, population, poultry farms, villages, rainfall, temperature, and wind. Finally, Tehran, Alborz, Qom, Isfahan, Qazvin, Golestan, and Gilan provinces had the greatest high-risk. The obtained zoning map of hazard had a good corresponding with the samples of report on the Avian Influenza virus.
    Keywords: Geographic Information System, influenza in birds, Fuzzy logic, Epidemiology