تأثیر تردد گردشگر بر برخی ویژگی‌های فیزیکی و هیدرولیکی خاک پارک جنگلی فندقلوی اردبیل

نویسندگان

1 دانشیار گروه علوم و مهندسی خاک، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی

2 دانشجوی سابق کارشناسی ارشد گروه علوم و مهندسی خاک، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی

چکیده

این پژوهش به­منظور بررسی اثرات تردد گردشگر بر برخی ویژگی­های فیزیکی و هیدرولیکی خاک در پارک جنگلی فندقلوی اردبیل انجام گرفت. طرح کاملاً تصادفی با سه تیمار بدون تردد، تردد متوسط و تردد شدید گردشگر در پنج تکرار اجرا گردید. نفوذ آب  به خاک در شرایط غیراشباع در مکش­های ماتریک 2، 5، 10 و 15 سانتی­متری با استفاده از نفوذسنج مکشی اندازه­گیری شد. داده­های نفوذ با استفاده از ­روش وودینگ مدل­سازی گردید و سپس ضرایب هدایت هیدرولیکی اشباع (Ks) و طول درشت موئینگی (cλ) با کاربرد معادله گاردنر محاسبه گردید. نتایج نشان داد سطوح تردد با این­که نتوانست به­طور معنی­دار بر هدایت هیدرولیکی غیراشباع و ضرایب جذبی خاک در مکش­های مختلف، Ks و cλ تأثیر بگذارد، اما تردد شدید گردشگر به­صورت معنی­دار موجب کاهش کربن آلی (62/68 درصد)، تخلخل کل (42/25 درصد)، رطوبت ظرفیت مزرعه (81/46 درصد)، رطوبت نقطه پژمردگی دائم (72/51 درصد) و سرعت نفوذ نهایی در مکش 15 سانتی­متر (50 درصد) و افزایش معنی­دار جرم مخصوص ظاهری (07/46 درصد) و مقاومت فروروی خاک (57/75 درصد) نسبت به تیمار بدون تردد شده، در نتیجه تردد شدید گردشگر باعث افت کیفیت فیزیکی و هیدرولیکی خاک جنگلی گردید.

کلیدواژه‌ها

عنوان مقاله [English]

Influence of Recreational Human Trampling on Some Soil Physical and Hydraulic Properties of Ardabil Fandoghloo Forest Park

نویسندگان [English]

  • SHA Asghari 1
  • S Abdolhossainzadeh Namin 2
1 Assoc. Prof., Dept. of Soil Sci. and Eng, Faculty of Agriculture and Natural Res., Univ. of Mohaghegh Ardabili, Iran
2 Former M.Sc. Student, Dept. of Soil Sci. and Eng, Faculty of Agriculture and Natural Res., Univ. of Mohaghegh Ardabili, Iran
چکیده [English]

This research was carried out to consider the effects of recreational human trampling on some soil physical and hydraulic properties in Fandoghloo Forest Park of Ardabil. A completely randomized design was conducted with three treatments of no trampling, moderate trampling and intensive trampling at five replicates.Water infiltration into soil under unsaturated condition was measured at the matric suctions (h) of 2, 5, 10 and 15 cm using tension infiltrometer. The infiltration data was modeled using Wooding method and then saturated hydraulic conductivity (Ks) and macroscopic capillary length (λc) using Gardner equation were calculated. The results showed that although trampling levels could not significantly affect the unsaturated hydraulic conductivity and soil sorptivitiy at different levels h, Ks and λc,but intensive recreational human trampling significantly decreased organic carbon (68.62%), total porosity (25.42%), field capacity moisture (46.81%), permanent wilting point moisture (51.72%) and final infiltration rate at h=15 cm (50%) and increased bulk density (46.07%) and soil penetration resistance (75.57%) in relation to the no trampling treatment; as a result, intensive recreational human trampling reduced physical and hydraulic quality of the forest soil.

کلیدواژه‌ها [English]

  • Forest soil
  • Hydraulic conductivity
  • Penetration resistance
  • Recreational human trampling
  • Tension infiltrometer

مراجع

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دانش آب و خاک
دوره 29، شماره 1
فروردین 1398
صفحه 125-136

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