- Abedi, Z., and Hosseini Amjad, M. 2020. Estimation of economical values related toMedical plants species of Arjanparishan Lake. Sustainability, Development & Environment, 1(3): 1-12.
- Adams, C., da Motta, R.S., Ortiz, R.A., Reid, J., Aznar, C.E. and de Almeida Sinisgalli, P.A., 2008. The use of contingent valuation for evaluating protected areas in the developing world: Economic valuation of Morro do Diabo State Park, Atlantic Rainforest, São Paulo State (Brazil). Ecological Economics, 66(2): 359-370.
- Amigues, J.P., Boulatoff, C., Desaigues, B., Gauthier, C. and Keith, J.E., 2002. The benefits and costs of riparian analysis habitat preservation: a willingness to accept/willingness to pay contingent and valuation approach. Ecological Economics,
43(1): 17-31.
- Amini, A. and Shahbazi, Z., 2015. Estimating the recreational value of oak forest in Sirvan and Chardavol Townships using contingent valuation method (CVM). Spatial Planning, 5(1): 27-48.
- Amiri, N., Emadian, S.F., Fallah, A., Adeli, K. and Amirnejad, H., 2015. Estimation of conservation value of myrtle (Myrtus communis) using a contingent valuation method: a case study in a Dooreh forest area, Lorestan Province, Iran. Forest Ecosystems, 2(30): 1-11.
- Amirnejad, H., 2005. Total Value of Forest
Eco-System in Northern Iran, with an Emphasis on the Valuation of Environmental, Ecological and Conservation Values. Ph.D. Thesis Department of Agricultural Economics, Agricultural Economics Department, Tarbiat Modarres University, Iran.
- Amirnejad, H., and Khalilian, S.A., 2006. An estimating on of the recreational value of forest parks of Iran, using a contingent valuation method, case study: Sisangan Forest Park, Nowshahr. Iranian Journal of Natural Resources, 59(2): 365-376.
- Asgari, A. and Mehregan, N., 2001. Estimating visitor's willingness to pay for historical cultural heritage using contingent valuation method (CVM): Case study of Ganj -nameh -Hamadan. The Economic Research (Sustainable Growth and Development), 1(2): 93-115.
- Asheim, G.B., 2000. Green national accounting: Why and how? Environment and Development Economics, 5: 25-48.
- Azadi, A., Emami Meibodi, A., Azadi, F. and Khaksar, M., 2015. Estimated economic value of Taq Bostan using Contingent Choice Method. Tourism Management Studies, 9(26): 83-96.
- Balali, H., Abdi, E., and Movahedi, R., 2019. Determination of the Recreational value of Mishan plain using contingent valuation method. Journal of Tourism and Development, 8(3): 30-44.
- Barala, N., Stern, M.J., and Bhattarai, R., 2008. Contingent valuation of ecotourism in Annapurna conservation area, Nepal: Implications for sustainable park finance and local development. Ecological Economics, 66(2-3): 218-227.
- Barrier, E.B., Acreman, M. and Knowler, D., 1997. Economic valuation of wetlands: a guide for policy makers and planners. Ramsar Convention Bureau, Gland, Switzerland, 127p.
- Dashti, G. and Sohrabi, F., 2008. Recreational value of Nabovat Park of Karaj based on contingent valuation. Iranian Journal of Natural Resources, 61(4): 921-932.
- Echeverria, J., Hanarahan, M. and Solorzano, R. 1995. Valuation of non-priced amenities provided by the biological resources within the Monteverde Cloud Forest Preserve, Costa Rica. Ecological Economics, 13(1): 43-52.
- Emami Meibodi, A. and Ghazi, M., 2008. An Estimation of the Recreational Value of the Saee Park in Tehran Using the Contingent Valuation Method (CV). Iranian Journal of Economic Research, 12(36): 187-202.
- Ghorbani, M. and Firooz zare, A., 2008. Introduction to Environmental Valuation. Ferdowsi University, Mashhad, 503p.
- Gurluk, S., 2006. The estimation of ecosystem services value in the region of Misi Rural Development Project: Results from a contingent valuation survey. Forest Policy and Economics, 9(3): 209-218.
- Haghjou, M., Hayati, B., Pishbahar, E. and Molaei, M., 2016. Using the contingent ranking approach to assess the total economic valuation the of Arasbaran forests in Iran. Taiwan Journal of Forest Science, 31(2): 87-102.
- Hanemann, W.M., 1984. Welfare evaluations in contingent valuation experiments with discrete responses. American journal of agricultural economics, 66(3): 332-341.
- Hanemann, W.M., 1994. Valuing the environment through contingent valuation. Journal of Economic Perspectives, 8(4): 19-43.
- Howarth, R.B. and Farber, S., 2002. Accounting for the value of ecosystem services. Ecological Economics, 41(3): 421-429.
- Jin, J., Wang, Z. and Ran, S., 2006. Comparison of contingent valuation and choice experiment in solid waste management programs in Macao. Ecological Economics, 57(3): 430-441.
- Johnson, N.L. and Baltodano, M.E., 2004. The economics of community watershed management: some evidence from Nicaragua. Ecological Economics, 49(1): 57-71.
- Kahn, J.R., Vásquez, W.F. and De Rezende, C.E., 2017. Choice modeling of system-wide or large scale environmental change in a developing country context: Lessons from the Paraíba do Sul River. Science of the Total Environment, 598: 488-496.
- Kealy, J.M. and Turner, R.W., 1993. A test of the equality of close-ended and open-ended contingent valuation. American Journal of Agricultural Economics, 75: 321-331.
- Khaksar Astaneh, H., Daneshvar, M., Kalateh Arabi, V. and Akbari, S., 2011. Estimating Recreation Value of Forest Parks of Mashhad: Application of Conditional Valuation Method. Agricultural Economics Research, 3(10): 61-78.
- Khodaverdizadeh, M., Hayati, B. and Kavoosi Kalashmi, M., 2008. Estimating the Outdoor Recreation Value of Kandovan Tourism Village of East Azarbayjan With the Use of Contingent Valuation Method. Environmental Sciences, 5(4): 43-52.
- Kolahi, M., Sakai, T., Moriya, K. and Aminpour, M., 2013. Ecotourism Potentials for Financing Parks and Protected Areas: A Perspective From Iran's Parks. Journal of Modern Accounting and Auditing,
9(1): 144-152.
- Laurentino, M., de Lima Araújo, E., Ramos, M.A., Bezerra Tenorio Cavalcanti, M.C., Santos Goncalves, P.H. and Albuquerque, U.P., 2022. Socioeconomic and ecological indicators in willingness to accept compensation for the conservation of medicinal plants in a tropical
dry forest. Environment, Development and Sustainability, 24: 4471-4489.
- Lee, C.K. and Han, S.Y., 2002. Estimating the use and preservation values of national parks’ tourism resources using a contingent valuation method. Tourism management, 23(5): 531-540.
- Lehtoranta, V., Kosenius, A.K. and Seppälä, E., 2017. Watershed management benefits in a hypothetical, real intention and real willingness to pay approach. Water Resources Management, 31(13): 4117-4132.
- Leong, P.C., Zakaria, M., Ghani, A.N.A. and Mohd, A., 2005. Contingent valuation of a Malaysian Highland Forest: non market benefits accrued to local residents. Journal of Applied Sciences,
5(5): 916-919.
- Majumdar, S., Deng, J., Zhang, Y. and Pierskalla, C., 2011. Using contingent valuation to estimate the willingness of tourists to pay for urban forests:
A study in Savannah, Georgia. Urban Forestry & Urban Greening, 10(4): 275-280.
- Marta-Pedroso, C., Freitas, H. and Domingos, T., 2007. Testing for the survey mode effect on contingent valuation data quality: A case study of web based versus in-person interviews. Ecological Economics, 62(3): 388-398.
- Molaei, M., 2009. Economic - Environmental Valuation of Arasbaran Forests Ecosystem. Ph.D. Thesis, Agricultural Economics Department, Faculty of Agricultural Economics and Development, University of Tehran, 192p.
- Molaei, M. and Kavoosi Kalashami, M., 2011. Estimating the Preservation Value of Lilium ledebourii Using Single Bounded Dichotomous Choice Contingent Valuation Method. Journal of Agricultural Economics and Development,
25(3): 322-329.
- Monteiro, J.M., Araújo, E.L., Amorim, E.L.C. and Albuquerque, U.P., 2012. Valuation of the Aroeira (Myracrodruon urundeuva Allemão): Perspectives on conservation. Acta Botanica Brasilica, 26(1): 125-132.
- Moradi, S., Mahmoudi, S. and Sheykhi Ilanloo, S., 2016. Suitable Forest Habitats for Protection of Iranian Squirrel (Sciurus anomalus pallescens) in West Kermanshah Province. Journal of Animal Environment, 8(2): 33-40.
- Naji, M., Baniasadi, M., Saleh, I. and Rafi'ee, H., 2011. The assessment of recreational value of Qaem forest park in Kerman using contingent valuation method. Iranian Journal of Forest, 3(3): 233-241.
- Nyongesa, J.M., Bett, H.K., Lagat, J.K. and Ayuya, O.I., 2016. Estimating farmers’ stated willingness to accept pay for ecosystem services: Case of Lake Naivasha watershed payment for ecosystem services scheme-Kenya. Ecological Processes, 5(1): 1-15.
- Pearce, D.W. and Pearce, C.G.T., 2001. The value of forest ecosystems: A report to the Secretariat Convention on Biological Diversity. University College London, London, 59p.
- Sameti, M., Moeeni, S., Mardiha, S. and KhanizadeAmiri, M., 2012. Estimation the recreational value of Najvan park of Isfahan using a contingent valuation method. Iranian Journal of Applied Ecology, 1(1) : 64-79.
- Sattout, E., Talhouk, S. and Caligari, P., 2008. Economic value of cedar relics in Lebanon: An application of contingent valuation method for conservation. Ecological Economics, 61(2):
315-322.
- Sefidkon, F., 2020. Protection of medicinal plants genetic resources of the country. Iran Nature,
5(5): 127-127.
- Shin, E., Hufschmidt, M., Lee, Y.S., Nickum, J.E., Umetsu, C. and Gregory, R., 1997. Valuating the economic impacts of urban environmental problems: Asian cities: Urban Management Programme. UNDP/UNCHS/The World Bank-UMP 1818 H Street, NW Washington, DC 20433, USA, 86p.
- Shrestha, R.K., Alavalapati, J.R., Stein, T.V., Carter, D.R. and Denny, C.B., 2002. Visitor preferences and values for water-based recreation: a case study of the Ocala National Forest. Journal of Agricultural and Applied Economics, 34(3): 547-559.
- Strand, J., Carson, R.T., Navrud, S., Ortiz-Bobea, A. and Vincent, J.R., 2017. Using the Delphi method to value protection of the Amazon rainforest. Ecological Economics, 131: 475-484.
- Tao, Z., Yan, H. and Zhan, J., 2012. Economic valuation of forest ecosystem services in Heshui watershed using contingent valuation method. Procedia Environmental Sciences, 13: 2445-2450.
- Torras, M., 2002. The total economic value of Amazonian deforestation, 1978-1993. Ecological Economics, 33(2): 283-297.
- Torres-Miralles, M., Grammatikopoulou, I. and Rescia, A.J., 2017. Employing contingent and inferred valuation methods to evaluate the conservation of olive groves and associated ecosystem services in Andalusia (Spain). Ecosystem Services, 26: 258-269.
- Venkatachalam, L. 2003. The contingent valuation method: a review. Environmental impact assessment review, 24(1): 89-124.
- Vieira, I.R., Oliveira, J.S., Santos, K.P., Silva, G.O., Vieira, F.J. and Barros, R.F., 2016. A contingent valuation study of buriti (Mauritia flexuosa Lf) in the main region of production in Brazil: Is environmental conservation a collective responsibility? Acta Botanica Brasilica, 30(4):
532-539.
- Whittington, D., Briscoe, J., Mu, X. and Barron, W., 1990. Estimating the willingness to pay for water services in developing countries: A case study of the use of contingent valuation surveys in southern Haiti. Economic development and cultural change, 38(2): 293-311.
- Xiong, K., Kong, F., Zhang, N., Lei, N. and Sun, C., 2018. Analysis of the factors influencing willingness to pay and payout level for ecological environment improvement of the Ganjiang River basin. Sustainability, 10(7): 2149.
- Zander, K.K., Pang, S.T., Jinam, C., Tuen, A.A. and Garnett, S.T., 2014. Wild and valuable? Tourist values for orang-utan conservation in Sarawak. Conservation and Society, 12(1): 27-42.
- Kniivila, M., 2006. Users and non-users of conservation areas: Are there differences in WTP, motives and the validity of responses in CVM surveys? Ecological Economics, 59(4): 530-539.