fa مدل‌سازی مطلوبیت زیستگاه درنای معمولی (Grus grus) در تالاب میقان اراک تخصصي Special پژوهشي Research <span .="" b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="line-height: 115%; font-family:;" times=""><font color="#000000">این گونه نماد تنوع زیستی منطقه معرفی شده است</font></span><span b="" dir="RTL" lang="AR-SA" ms="" style="line-height: 115%; font-family:;"><font color="#000000">.</font></span><span 1393="" b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="line-height: 115%; font-family:;" times=""><font color="#000000">بر اساس حداکثر آنتروپی یا نزدیک به واقعیت با 4 متغیر شامل کاربری اراضی</font></span><span b="" dir="RTL" lang="AR-SA" new="" style="line-height: 115%; font-family:;" times=""><font color="#000000">،</font></span><span b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="line-height: 115%; font-family:;" times=""><font color="#000000">غذا و فاصله از عوارض انسان</font></span><span b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="line-height: 115%; font-family:;" times=""><font color="#000000">ساخت (جاده های اصلی</font></span><span b="" dir="RTL" lang="AR-SA" new="" style="line-height: 115%; font-family:;" times=""><font color="#000000">،</font></span><span b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="line-height: 115%; font-family:;" times=""><font color="#000000"> کارخانه</font></span><span b="" dir="RTL" lang="AR-SA" new="" style="line-height: 115%; font-family:;" times=""><font color="#000000">،</font></span><span b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="line-height: 115%; font-family:;" times=""><font color="#000000"> شهر</font></span><span b="" dir="RTL" lang="AR-SA" new="" style="line-height: 115%; font-family:;" times=""><font color="#000000">،</font></span><span .="" 20="" b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="color: black; line-height: 115%; font-family:;" times=""> مطالعه </span><span b="" dir="RTL" lang="AR-SA" new="" style="color: black; line-height: 115%; font-family:;" times="">نشان می&shy;دهد </span><span b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="color: black; line-height: 115%; font-family:;" times=""> هکتار معادل 21 درصد </span><span b="" dir="RTL" lang="AR-SA" new="" style="color: black; line-height: 115%; font-family:;" times="">از محدوده منطقه شکار ممنوع تالاب میقان دارای زیستگاه مطلوب برای درناها می&shy;باشد، مدل </span><span new="" style="line-height: 115%; font-family:;" times=""><font color="#000000">ROC</font></span><span dir="RTL" new="" style="color: black; line-height: 115%; font-family:;" times=""> </span><span b="" dir="RTL" lang="AR-SA" new="" style="color: black; line-height: 115%; font-family:;" times="">مشخص نمود اعتبار مدل مطلوبیت زیستگاه معادل 817/0 است</span><span b="" dir="RTL" lang="AR-SA" new="" span="" style="color: black; line-height: 115%; font-family:;" times=""> می&shy;باشد.</span><span .="" 1000="" 40="" 5="" b="" color="#000000" dir="RTL" font="" lang="AR-SA" new="" span="" style="line-height: 115%; font-family:;" times=""><font color="#000000">تأ</font></span><span b="" dir="RTL" lang="AR-SA" new="" style="line-height: 115%; font-family:;" times=""><font color="#000000">مین حقابه تالاب میقان می&shy;باشد.</font></span> <p style="margin: 0cm 0cm 0pt 155.95pt;"><font color="#000000" face="Times New Roman" size="3">Meighan Wetland Forbidden Hunting Region of Arak is located at center of Iran in the birds&rsquo; migratory flyway. In the cold season, thousands of the migratory birds settle this region featuring of the desired habitat conditions annually, especially, common crane. Considering the huge number of common crane in Meighan wetland in the cold season compared to other habitats, this species introduced as symbol of biodiversity in this region. This study was conducted by the use of Maxent method based on maximum atrophy or close to the reality with 4 variables include of water depth, food, land use and man-made events as well as 20 settlement points of cranes. The results indicated that an area of 5037 hectares equal to 21% of Meighan Wetland Forbidden Hunting Region has desired habitat for the cranes. ROC of the model specified that the desirability model validity is equal to .817 showing a great performance of Maxent method. Among the ariables the highest efficacy on habitat of the cranes belongs to water depth (from 5 to 40 cm), food (Cyperusrotundus, wheat and barley germs), land use (wetland, dry, irrigated) and man-made events (more than1000 m) respectively. In order to protect cranes&rsquo; habitat in this region, some suitable approaches include of protection of the existing desired habitat spots,the lack of industrial and mining activities and supplying Meighan Wetland&rsquo;s Right of Wetland preventing any land usage alteration are suggested. </font></p> درنای معمولی, تالاب میقان, مدل سازی مطلوبیت زیستگاه و Maxent Common Crane, Meighan Wetland, Habitat Suitability, Maxent 57 70 http://jweb.ahvaz.iau.ir/browse.php?a_code=A-10-280-3&slc_lang=fa&sid=1 امیر انصاری 10031947532846002972 10031947532846002972 Yes گروه محیط زیست، دانشکده کشاورزی و منابع طبیعی، اراک