تحلیل پویایی عناصر غذایی لاشبرگ در توده‌های خالص و آمیختۀ راش و ممرز (دارابکلای مازندران)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموختۀ دکتری، دانشکدة منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری

2 دانشیار گروه جنگلداری، دانشکدة منابع طبیعی، دانشگاه کشاورزی و منابع طبیعی ساری، ساری

3 استادیار گروه جنگلداری، دانشکدة منابع طبیعی و علوم دریایی نور، دانشگاه تربیت مدرس، نور، ایران

4 استادیار، گروه مهندسی طبیعت، دانشکدۀ منابع طبیعی و محیط زیست، دانشگاه ملایر، ملایر

چکیده

 
پویایی عناصر غذایی و بازگشت آنها به خاک از طریق لاشبرگ، از مهم­ترین مسیرهای چرخۀ عناصر غذایی در بوم‌سازگان­ جنگلی است. تحقیق حاضر با هدف ارزیابی پویایی عناصر غذایی در توده‌های خالص راش (Fagus orientalis Lipsky)، خالص ممرز (Carpinus betulus L.) و آمیختۀ راش- ممرز در جنگل آموزشی- پژوهشی دارابکلای ساری انجام گرفت. به این منظور در هر توده ده قطعه نمونۀ 1000 متر مربعی به‌صورت تصادفی اجرا و با برداشت قطر و ارتفاع درختان، آماره‌های توصیفی توده‌های مدنظر تعیین شد. سپس تله­های لاشبرگ با ابعاد 50 × 50 سانتی‌متر برای اندازه‌گیری مقدار لاشه­ریزی در واحد سطح و کیسه‌های لاشبرگ با ابعاد 20×20 سانتی‌متری (با روزنۀ دو میلی­متری) با ده تکرار در توده‌ها به‌مدت 360 روز نصب و در فواصل زمانی 60، 120، 180، 240، 300 و 360 روز غلظت عناصر نیتروژن، کربن، فسفر و پتاسیم لاشبرگ­های کیسه­ها اندازه‌گیری شد. براساس نتایج بیشترین لاشه­ریزی برگ با 1817 کیلوگرم در هکتار مربوط به ماه­های آبان و آذر در تودۀ راش بود. بیشترین ورودی عناصر تحت بررسی مربوط به تودۀ خالص ممرز بود. روند پویایی عناصر فسفر، پتاسیم و کربن در توده‌های خالص و آمیخته، کاهنده با افزایش جزئی در انتهای دوره و در مورد نیتروژن افزاینده با کاهش در انتهای دوره بود. پویایی عناصر در تودۀ آمیخته نوسان بیشتری نسبت به توده‌های خالص نشان داد. همچنین مشخص شد که روزهای 200 تا 300 پس از ریزش لاشبرگ محدودۀ زمانی مهمی در تغییرات اساسی روند پویایی عناصر غذایی لاشبرگ محسوب می­شود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of litter nutrient dynamics in pure and mixed stands of beech and hornbeam (Darabkola of Mazandaran)

نویسندگان [English]

  • A. Kianmehr 1
  • S. M. Hojjati 2
  • Y. Kooch 3
  • F. Ghasemi Aghbash 4
1 Ph.D. Graduated of Forest science, Dept. of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
2 Associate Prof., Dept. of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
3 Assistant Prof., Dept. of forestry, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, I. R. Iran
4 Assistant Prof., Dept. of Nature Engineering, Faculty of Natural Resources and Environment, Malayer University, Malayer, I. R. Iran
چکیده [English]

The dynamics of nutrients and their return to the soil through the litter is one of the most important pathways of the nutrient cycle in forest ecosystems. The aim of this study was to evaluate the dynamics of nutrients in pure beech, pure hornbeam and beech-hornbeam stands in Darabkola educational-research forest of Sari. For this purpose, in each stand, 10 sample plots with 1000m2 area were randomly established and by measuring the diameter and height of the trees, descriptive statistics of the studied stands were calculated. Then, litter traps with dimensions of 50 × 50 cm to measure the amount of litter fall per unit area and litter bags with dimensions of 20 × 20 cm (with a pore of 2 mm) with 10 replicated were installed in the studied stands for 360 days and at intervals of 60, 120, 180, 240, 300 and 360 days, the concentrations of nitrogen, carbon, phosphorus and potassium in the litter of the bags were measured. According to the results, the highest rate of litter falls with 1817 kg/ha was related to November and December in beech stands. In addition, the highest input of the studied elements was related to the pure hornbeam stand. The resultas also indicatedthe dynamics of phosphorus, potassium and carbon elements in pure and mixed stands are decreasing with a slight increase at the end of the period and increasing in the case of nitrogen and decreasing at the end of the period. The dynamics of the elements in the mixed stand showed more fluctuation than the pure stands. Also, the results of this study showed that the 200th to 300th days after litter fall is an important time range in the fundamental changes in the dynamics of litter nutrients.

کلیدواژه‌ها [English]

  • Hyrcanian forest
  • Litter bag
  • litter trap
  • nutrient dynamics
Akhavan, R., Sagheb-Talebi, Kh., Hassani, M., & Parhizkar, P. (2010). Application of bivariate Ripley’s K-function for studying competition and spatial association of trees (Case study: intact Oriental beech stands in Kelerdasht). Iranian Journal of Forest and Poplar Research, 19(4), 632-643.
Amanzadeh, B., Pourmajidian, M., Sagheb Talebi, K., & Hojjati, S. (2015). Spatial Pattern, competition and spatial association of trees in Mixed Hornbeam Stands using univariate and bivariate Ripley’s K-function (case study: Reserve area, district 3 of Asalem forests). Iranian Journal of Forest and Poplar Research, 23(1), 37-52.
Bahrami, V., Fallah, A., & Khorrami, R.A. (2018). Comparison of WORLD VIEW-2, PLEIDES-2 and IRS LISSIII satellites capability for estimating stand volume of forest (case study: Darabkola Experimental Forest). Journal of Wood and Forest Science and Technology, 24(4), 131-146.
Berg, B., & McClaaugherty, C. (2008). Plant litter: Decomposision, Humus Formation, Carbon Sequestration. Berlin Heidelberg: Springer-Verlag Press.
Bo, L., Qing, L., Yanl, W.U., & Hail, H.E. (2006). Nutrient and Litter Patterns in Three Subalpine Coniferous Forests of Western Sichuan, China. Pedosphere, 16, 380-389.
Bohara, M., Acharya, K., Perveen, S., Manevski, K., Hu, C.S., Yadav, R.K.P., Shrestha, K., & Li, X.X. (2020). In situ litter decomposition and nutrient release from forest trees along an elevation gradient in Central Himalaya. CATENA, 194, 104-114.
Corrigan, C. (2008). The Decomposition of Leaf Litter in Litter Traps: Implications on Forest Biogeochemical Cycling. A thesis presented to the University of Waterloo in fulfillment of the thesis Requirement for the Degree of Master of Environmental Studies in Environment and Resource Studies. 152p.
Dinka, M., Agoston-Szabo, E., & Toth, I. (2004). Changes in Nutrient and Fibre Content of Decomposing Phragmites australis Litter Internat. Review Hydrobiol, 6, 519-535.
Gautam, M.K., Lee, K.S., & Song, B.Y. (2017). Deposition pattern and through fall fluxes in secondary cool temperate forest, South Korea. Atmospheric Environment, 161, 71-81.
Ghasemi Aghbash, F., Allah Veisi, G., & Hosseini, V. (2016). Investigating Nutrient Quality and Litter Decomposition of Lebanon Oak (Quercus libani) in Early Stages of Decomposition Process in the Northern Zagros Forests (Case Study: Hoare Khul Forests in the City of Baneh). Journal of Zagros Forests Researches, 3(1), 1-17.
Ghasemi Aghbash, F., &  Beyranvand, M. (2021). Effect of litter quality and Home-Field advantage on leaf-litter decomposition of Tree of heaven and European black pine leaf-litters. Iranian Journal of Forest. 13 (3), 319-332
Ghazanshahi, J. (1998). Soil and plant analysis. Homa Publications, 311p.
Hashemi, S.F., hojjati, S.M., hosseininasr, S.M., & jalilvand, H. (2012). Comparison of nutrient elements and elements retranslocation of Acer velutinum, Zelkova carpinifolia and Pinus brutia in Darabkla-Mazindaran. Iranian Journal of Forest. 4(2), 175-185.
Hojjati, S., & Tafazoli, M. (2015). The Study of litter decomposition process of Caucasian oak and Turkish pine using litterbag technique. Journal of Plant Research (Iranian Journal of Biology, 28(3), 510-521.
Karimiyan Bahnemiri, A., Taheri Abkenar, K., Kooch, Y., & Salehi, A. (2020). The effect of canopy combination in over story on nutrient Contentand microbial indices of soil in Korkoroud forests of Noshahr. Iranian Journal of Forest. 11(4), 547-558.
Kianmehr, A., Hojati, S., Kooch, Y., & Ghasemi aghbash, F. (2019). Effect of canopy composition on litterfall rate, respiration and some Soil properties in pure and mixed stands of beech and hornbeam. Journal of Forest Research and Development, 5(3), 373-386.
Kooch, Y., & Bayranvand, M. (2017). Variability analysis of litter quality, mineral nitrogen, soil respiration and microbial biomass under afforested tree stands. Forest and Wood Products, 70(3), 451-460.
Li, L.J., Zeng, D.H., Yu, Z.Y., Fan, Z.P., Yang, D., & Liu, Y.X. (2011). Impact of litter quality and soil nutrient availability on leaf decomposition rate in a semi-arid grassland of Northeast China. Journal of Arid Environments, 75(9), 787-792.
Noraiy, A., Jalilvand, H., Hojjati, S., & Alavi, S. (2021). Comparison changes of chemical elements of throughfall and litterfall in oak (Quercus castaneifolia C. A. Mey) and pine (Pinus radiata D. Don) plantations. Forest and Wood Products, 74(1), 1-14.
Marvie Mohadjer, M.R., & Moradi, M. (2011). Morphological and quantitative characteristics of mature beech trees (Fagus orientalis Lipsky) in two regions of Sistan in Guilan and Kheiroud in Mazandaran. Iranian Journal of Forest and Poplar Research. 19(3), 300-311.
Pandey, R.R., Sharma, G., Tripath, S.K., & Singh, A.K. (2007). Litterfall, litter decomposition and nutrient dynamics in a subtropical natural oak forest and managed plantation in northeastern India. Forest Ecology and Management, 240, 96-104.
Railoun, M.Z., Simaika, J.P., & Jacobs, S.M. (2021). Leaf litter production and litter nutrient dynamics of invasive Acacia mearnsii and native tree species in riparian forests of the Fynbos biome, South Africa. Forest Ecology and Management, 498, 119-128.
Rawat, M., Arunachalam, K., Arunachalam, A., Alatalo, J.M., & Pandey, R. (2020). Predicting litter decomposition rate for temperate forest tree species by the relative contribution of green leaf and litter traits in the Indian Himalayas region. Ecological Indicators, 119, 106-127.
Sirri, N.F., Libalah, M.B., Momo Takoudjou, S., Ploton, P., Medjibe, V., Kamdem, N.G., Mofack, G., Sonk´e, B., & Barbier, N. (2019). Allometric models to estimate leaf area for tropical African broadleaved forests. Geophysical Research Letters, 46, 85-94.
Smith, M.N., Stark, S.C., Taylor, T.C., Ferreira, M.L., Oliveira, E., Restrepo-Coupe, N., Chen, S., Woodcock, T., Santos, D.B., Alves, L.F., Figueira, M., Camargo, P.B., Oliveira, R.C., Arag˜ ao, L.E.O.C., Falk, D.A., McMahon, S.M., Huxman, T.E., & Saleska, S.R. (2019). Seasonal and drought-related changes in leaf area profiles depend on height and light environment in an Amazon forest. New Phytologist, 222, 128-138.
Swift, M.J., Heal, O.­W., & Anderson, J.­M. (1979). Decomposition in terrestrial ecosysteme. University of California Press. Berkeley, California, 372p.
Tafazoli, M., Attarod, P., Hojjati, S.M., & Tafazoli, M. (2019). Throughfall Chemistry of Persian Maple (Acer velutinim) and Turkish Pine (Pinus brutia) Plantations in East of Mazandaran. Ecology of Iranian Forests, 7(14), 39-47.
Thomas, W.A. (1968). Decomposition of loblolly pine needles with and without addition of dogwood leaves. Ecology, 49, 68-79.
Wahing, I.W., Van, V.J.G., Houba, J.­G., & Van der, l. (1989). Soil and plant analysis, a series of syllabi. Part 7, plant analysis procedure. Wageningen agriculture.
Zahriban, M., Fallah, A., Shataee, S., & Kalbi, S. (2015). Estimating quantitative forest attributes using Pleiades satellite data and non-parametric algorithms in Darabkola forests, Mazandaran. Iranian Journal of Forest and Poplar Research, 23(3), 65-71.