همکاری با انجمن علمی مدیریت و کنترل مناطق بیابانی ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 عضو هیئت علمی

2 کارشناس ارشد پژوهشی، بخش تحقیقات مرتع، موسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

چکیده

یکیازعواملکلیدیدرمدیریتمراتعتعیینارزشرجحانیگونههایمرتعیتوسطدامچراکنندهاست. در این تحقیق ارزش رجحانی گیاهان مرتعی سایت پلور در مراتع کوهستانی مازندران در ماهها­ی فصل چرا (تیر تا شهریور) و سالهای مختلف(1389-1386) مورد بررسی قرار گرفت . برای تعیین ارزش رجحانی گونه­ها از شاخص  انتخاب گونه استفاده شد. تولیدومصرفگونههادرداخلوخارجوقرقدر ماه­های فصلچراوبهمدتچهارسالبهمنظورمحاسبه شاخصانتخابگونهجمعآوریشد. با استفاده از آزمون چند دامنه‌ای دانکن میانگین‌ها مورد مقایسه قرار گرفتند. نتایج نشان می دهد که شاخص رجحان گونه­ها و همچنین شاخص رجحان گونه­ها  در ماههای مختلف فصل چرا در سطح یک درصد دارای اختلاف معنی­دار می­باشند. گونه­های Elymus hispidus var hispidus ,Arenaria gypsophiloides, Bromus tomentellus, Dactylis glomerata, Festuca ovina, Taraxacum montanum, Tragopogon graminifolius, Falcaria vulgaris دارای کلاسI  خوشخوراکی می­باشند. گونه­های, Astragalus aegobromus Ferula galbaniflua  دارای کلاس II خوشخوراکی ­می­باشند. گونه­های ,Dianthus orientalis, Stipa hohenackeriana, Papaver bracteatum,Thymus pubescens,Verbascum Thapsus, Gagea lutea, Goebelia alopecuroides,Euphorbia helioscopia  دارای کلاسIII خوشخوراکی ­می­باشند. بنابر این در بررسی ارزش رححانی،  علاوه بر ذایقه دام مورد مطالعه، عواملی نظیر مقدار تولید و درصد ترکیب گیاهان موجود، نحوه پراکنش و میزان دسترسی دام به آن­ها در این زمینه نقش دارند.

کلیدواژه‌ها

عنوان مقاله [English]

Determination of preference value of rangeland species( Polour area in Mazandaran province )

نویسندگان [English]

  • Hassan Ghelichnia 1
  • Hajar Nemati 2
  • Rostam Khalifezadeh 2

1 -Associate Prof. Forest and Rangeland Research Department.mazandaran Agriculture and natural resources Research and education Cnter,AREEO,Sari,Iran.

2 Senior Research Expert, Rangeland Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

کلیدواژه‌ها [English]

  • Season of grazing
  • Species production
  • Species comsuptiom)plant composition?)
  • Exclusion
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