Lindsay, K., Craig, J., and low, M. (2008). The effects of track proximity on avian reproductive success and nest selection in an open sanctuary. Tourism Management, 29: 730-739.
 Rusterholz, H.P., Kissling, M., and Baur, B. (2009). Disturbance by human trampling alter the performance, Sexual reproduction and genetic diversity in a clonal woodland herb, Perspectives in plant ecology. Evolution and Systematic, 8(2): 109-116.
 Worboys, G., DeLacy, T., and Lockwood, M. (2005). Principles and Practice Protected Area Management, Cambridge University Press. pp 365.
 Donaldson, A., and Bennet, A. (2004). Ecological effects of roads, implications for the internal fragmentation of Australian parks and reserves. Technical Paper Series, 12: 1-74
 Hegetschweiler, K.T., Loon, N.V., Ryser, A., Rusterholz, H.P., and Bruno, B. (2009). Effects of fireplace use on forest vegetation and amount of woody debris in suburban forests in northwestern Switzerland. Environmental Engineering, 43(2): 299-310.
 Eshaghi Rad, C., Heidari, M., and Mahdavi, A.S. (2009). Examines the impact of recreation activities on soil and vegetation (case study: Forest Park Ilam Chghasbz). Iranian Journal of Forest, 3(1): 70-81.
 Obua, J. (1997). The potential, development and ecological impact of ecotourism in Kibale National Park, Uganda. Journal of Environmental Management, 50(1): 27-38.
 Bruner, A.G., Gullison, R.E., Rice, R.E., and Da Fonseca, G.A.B. (2001). Effectiveness of parks in protecting tropical biodiversity. Science Journal, 291: 125-128.
 Keyvan Behjo, F. (2013). Measurement of damage to stand shrubs of recreational activities in the forest Fandoghlo Ardabil, Iranian Journal of Forest, 4(3): 231- 242.
 Brown, J.H., Kalisz, S.P., and Wright, W.R. (1977). Effects of recreational use on forested sites. Environmental Geology, 1(2): 425-431.
 Marvi-Mohadjer, M., Silviculture and Tending of Forest, Tehran University Press. Tehran.
 Chin, C. (2002). Visitors perspectives on environmental impact and their management, ecotourism in Bake National Park, Borneo. Journal of Sustainable Tourism, 8(1): 20-35
 anonymous, (1992). Forestry Plan Forest Park Boloran Kouhdasht, Department of Natural Resources, Kouhdasht, Lorestan.
 Pariente, S., and Helena, M.Z. (2008). Effect of visitor’s pressure on the spatial variability of sandy soil in an urban park in Tel Aviv. Environment Assess, 142: 35-46.
 Manuela, A., Bebayas, j., Castillejos, T., Serrano, F., Morote, F., and Barja, A. (2005). Impact of visitors on soil and vegetation of the recreational area. Environmental Monitoring and Assessment, 10: 55-67.
 Anders. (2005). Impact of visitors on soil and vegetation of the recreational area. Environmental Monitoring and Assessment, 10: 55-67
 Turton, S.M. (2005). Managing environmental impacts of recreation and tourism in rainforests at the wet tropics of Queensland world heritage area. Geographical Research, 43: 140-151.
 Pickering, C.M., and Hill, W. (2007). Impacts of recreation and tourism on plant biodiversity and vegetation in protected areas in Australia. Journal of Environmental Management, 85: 791-800.
 Buckley, R. (2004). Environmental Impacts of Natural Area Tourism: Ecology, Impacts and Management. Channel View Publications, Australia. pp 235.
 Pickering, C.M., and Growcock, A. (2009). Impacts of experimental trampling on tall alpine herbfields and subalpine grasslands in the Australian Alps. Journal of Environmental Management, 91: 532-540.