بلوغ مالی صنوبر دلتوئیدس (Popolus deltoides Marsh) (مطالعه موردی: روستای شالیشل استان کردستان)

نوع مقاله: علمی- پژوهشی

نویسندگان

1 استادیار، گروه جنگل‌داری، دانشکده کشاورزی، دانشگاه لرستان، خرم‌آباد، ایران

2 کارشناس ارشد جنگل‌داری، دانشکده کشاورزی، دانشگاه لرستان، خرم‌آباد، ایران

3 دانشجوی دکتری جنگل‌داری، دانشکده کشاورزی، دانشگاه لرستان، خرم‌آباد، ایران

4 استادیار، گروه جنگل‌داری، دانشکده منابع طبیعی، دانشگاه کردستان، سنندج، ایران

5 استادیار پژوهش، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی کردستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، سنندج، ایران

چکیده

در پژوهش پیش‌رو صنوبر دلتوئیدس (Popolus deltoides Marsh)در استان کردستان ازنظر بلوغ مالی و دوره چرخش بهینه بررسی شد. ابتدا داده‌های مربوط به رویش صنوبر از طرح‌های کاشت صنوبر مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی کردستان استخراج شد و در ادامه قیمت هر متر مکعب چوب سرپا و هزینه‌های ثابت و متغیر به‌ازای هر هکتار از طریق پرسشنامه، مصاحبه با مردم بومی منطقه و زارعان صنوبر برآورد شد. درنهایت، با استفاده از مدل ارزش مورد انتظار زمین (فاستمن)، سنی که در آن کشاورزان به بیشترین ارزش خالص فعلی دست پیدا می‌کنند، تعیین شد. نتایج نشان داد که سن چرخش بهینه در 12 سالگی در جایی‌که منحنی نتیجه دریافتی نهایی، منحنی هزینه نهایی ورودی را قطع می‌کند، اتفاق می‌افتد. این درحالی است که کشاورزان صنوبر در منطقه، درختان صنوبر را در سن شش تا هفت سالگی و پیش از موعد، قطع می‌کنند و سود بیشتر را نادیده می‌گیرند. علت این رویداد هم وجود خطر در بازار صنوبر این منطقه و عدم خطر‌پذیری بیشتر کشاورزان است.

کلیدواژه‌ها


عنوان مقاله [English]

Financial maturity of Popolus deltoides Marsh. (Case study: Shalyshel village, Kurdistan province)

نویسندگان [English]

  • Kamran Adeli 1
  • Seyyed Saman Saeedi 2
  • Samane Namdari 3
  • Kiomars Mohammadi Samani 4
  • Bayazid Yosefi 5
1 Assistant Prof., Forestry Department, Faculty of Agriculture, University of Lorestan, Khoramabad, Iran
2 M.Sc. Forestry, Faculty of Agriculture, University of Lorestan, Khoramabad, Iran
3 Ph.D. Student Forestry, Faculty of Agriculture, University of Lorestan, Khoramabad, Iran
4 Assistant Prof., Faculty of Natural Resources, University of Kurdistan, Sanandaj, Iran
5 Assistant Prof., Research Division of Natural Resources, Kurdistan Agricultural and Natural Resources Research and Education Center, AREEO, Sanandaj, Iran
چکیده [English]

In this paper the financial maturity and optimal rotation age of poplar (Popolus deltoides Marsh.) was studied in a study site in in Kurdistan province. First, the growth information of poplar was obtained from poplar plantation plans of Agricultural and Natural Resources Research Center in Sanandaj. Then data concerning stumpage price, fix and variable cost per hectare were collected by using questionnaires and conducting interviews with local people and poplar farmers. Finally, the age in which farmers achieve the maximum net present value was determined using the expected value of land model, i.e. Faustmann model. The findings showed that optimal rotation period occurs at the age of 12 years, where the marginal revenue and marginal cost curves intersect. However, the local farmers cut poplar trees at the premature ages of 6-7 years, thereby ignoring higher profits associated with the further growth. The obtained results can be attributed to the risks in regional poplar market, which is attempted to be avoided by the farmers.
 

کلیدواژه‌ها [English]

  • Faustmann model
  • financial maturity
  • length rotation
  • net present value
  • Popolus deltoides
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