Effect of thinning on growth of Brant`s oak (Quercus brantii Lindl.) sprout- clumps in Kermanshah

Document Type : Research article

Authors

1 h.D. Silviculture and Forest Ecology, Research Division of Natural Resources, Kermanshah Agricultural and Natural Resources Research and Education Center, AREEO

2 Associate Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO)

3 Senior Research Expert, Research Division of Natural Resources, Kermanshah Agricultural and Natural Resources Research and Education Center, AREEO

4 Assistant Prof., Department of Forestry and Forest Economics, Faculty of Natural Resources, Razi University

Abstract

The vegetative potential of stump is divided among various sprouts in coppice stands. The main objectives of this research were to 1) identify the growth respond of Brant`s oak (Quercus brantii Lindl.) sprout clumps to thinning and 2) to choose the best intensity of thinning. This study was done based on completely randomized design with four treatments and three replications in Kermanshah province (Darbadam forests).We assessed the effect of different thinning intensities on growth of oaks in Darbadam region, Kermanshah, during a 5-year period. Four treatments including heavy (decreasing 30 percent of basal area), medium (decreasing 20 percent of basal area) and light (decreasing 10 percent of basal area) thinning, each with 3 replications was used. One treatment was considered as control with no intervention. Prior to thinning quantitative characteristics of sample trees were measured. In the last year of research, the measurements were repeated to calculate the growth values. Based on results, heavy thinning had considerably positive impact on growth of sprout-clumps crown area and basal area of sprouts. However, no significant difference was observed between treatments regarding to height of sprout-clumps and diameter of sprouts. We concluded that the heavy thinning with removing 30% of basal area was the most influential on sprout clumps growth that is applicable in thinning projects in Zagros oak coppice stands.

Keywords


- Birang, N., Javanshir, A. and Mojtahedi, Y., 1992. Étude et culture de la forêt (translation). University of Tabriz Press, Tabriz, 397p (In Persian).
- Canellas I., Del Río, M., Roig, S. and Montero, G., 2004. Growth response to thinning in Quercus pyrenaica Willd. coppice stands in Spanish central mountain. Annals of Forest Science, 61(3): 243-250.
- Ciancio O., Corona, P., Lamonaca, A., Portoghesi, L. and Travaglini, D., 2006. Conversion of clear-cut beech coppices into high forests with continuous cover: A case study in central Italy. Forest Ecology and Management, 224: 235-240.
- Ducrey, M. and Toth, J., 1992. Effect of cleaning and thinning on height growth and girth increment in holm oak coppices (Quercus ilex L.). Vegetatio, 99-100: 365-376.
- Fani, B., Amani, M., Yousefi, B. and Mardani, F., 2008. Tending of Young Oak Sprout-clumps in Coppice Forests of Marivan (First phase). Final Report of Research Plan. Published by Research Institute of Forests & Rangelands, Tehran, 39p (In Persian).
- Fattahi, M., 1994. Study of Zagros Forests and the Most Important Degradation Factors. Published by Research Institute of Forests and Rangelands, Tehran, 63p (In Persian).
- Fattahi, M., 1996. Role of local participation in reclamation of Zagros forests. Proceedings of the First Seminar on Natural Resources Extension, Animal Sciences and Fisheries. Ministry of Jahad-e- Agriculture, Iran, 1996: 22-24 (In Persian).
- Fattahi, M., Ansari, N., Abbasi, H.R. and Khanhasani, M., 2001. Zagross Forest Management. Published by Research Institute of Forests and rangelands, Tehran, 471p (In Persian).
- Ffolliott, P.F., Farah, M.H. and Gottfried, G.J., 2003. Growth and volume of Emory oak coppice 10 years after thinning: A case study in southeastern Arizona. Western Journal of Applied Forestry, 18(2): 77-80.
- Jazirehi, M.H. and Ebrahimi Rostaghi, M., 2003. Silviculture in Zagros. University of Tehran Press, Tehran, 560p (In Persian).
- Khodakarami, Y., Pourhashemi, M., Pourreza, M., Khanhassani, M., Safari, H., avakkoli, A. and Mehrjoei, A., 2014. Effect of thinning on development of Brant`s oak (Quercus brantii) sprout-clumps in forests of Kermanshah province. Final Report of Research Plan, Published by Research Institute of Forests and Rangelands, Tehran, 32p (In Persian).
- Liu, Z., Fang, Sh., Liu, D., Yu, M. and Tang, L., 2011. Influence of thinning time and density on sprout development, biomass production and energy stocks of Sawtooth oak stumps. Forest ecology and management, 269: 299-306.
- Marvie Mohadjer, M.R., 2005. Silviculture. University of Tehran Press, Tehran, 387p (In Persian).
- Mehdifar, D., Pourhashemi, M. and Karamian, R., 2014. Impact of thinning on quantitative characteristics of Brant`s oak (Quercus brantii Lindl.) in Khorram Abad forests. Iranian Journal of Forest and Poplar Research, 22(2): 358-367 (In Persian).
- Shipek, D.C. and Ffolliott, P.F., 2005. Management of thinned Emory oak coppice for multiple resource benefits. Proceedings of RMRSP. USDA Forest Service, 2005: 545-546
- Shipek, D.C., Ffolliott, P., Gottfried, G.L. and DeBano, L.F., 2004. Transpiration and Multiple Use Management of Thinned Emory Oak Coppice. USDA Forest Service, Rocky Mountain Forest and Range Experiment, Research Paper RMRS-RP-48, 8p.
- Soleimani, H., Olfat Miri, H.R. and Torabi, M., 2013. Oak decline in Kermanshah province and proposed projects on Zagros decline. Published by Kermanshah Natural Resources and Watershed Management office, 65p (In Persian).