References
- Ahmad, F., Draz, M. U., Su, L., Ozturk, I., & Rauf, A. (2018). Tourism and Environmental Pollution: Evidence from the One Belt One Road Provinces of Western China. Sustainability, 10(10), 3520. https://doi.org/10.3390/SU10103520
- Alava, J., McMullen, K., Jones, J., Barragán-Paladines, M., Hobbs, C., Tirapé, A., Calle, P., Alarcon, D., Muñoz-Pérez, J., Muñoz-Abril, L., Townsend, K., Denkinger, J., Uyaguari, M., Domínguez, G., Espinoza, E., Reyes, H., Piedrahita, P., Fair, P., Galloway, T., Grove, J., Lewis, C., & Schofield, J. (2022). Multiple anthropogenic stressors in the Galápagos Islands’ complex social–ecological system: Interactions of marine pollution, fishing pressure, and climate change with management recommendations. Integrated Environmental Assessment and Management, 19. https://doi.org/10.1002/ieam.4661
- Al-Taee, O., & Jaleel, A. (2024). the Role of Slum Tourism in Sustainable Urban Development of Slum Areas in Iraq. Civil and Environmental Engineering, 20(2), 933-947. https://doi.org/10.2478/cee-2024-0068
- Anggraini, S. T., Ekayani, M., Abidin, Z., & Suryana, H. (2024). Assessing the implementation of waste management retribution related to Bogor tourism sustainable. IOP Conference Series: Earth and Environmental Science, 1366. https://doi.org/10.1088/1755-1315/1366/1/012013
- Bateman, I., & Großbritannien, D. o. T. (2002). Economic valuation with stated preference techniques: a manual (Vol. 50). Edward Elgar Cheltenham.
- Bateman, I., & Großbritannien, D.o.T. (2002). Economic valuation with stated preference techniques: a manual (Vol. 50): Edward Elgar Cheltenham, pp. 87. Online available: https://assets.publishing.service.gov.uk/media/5a750ff740f0b6397f35d5f5/Economic_valuation_with_stated_preference_techniques.pdf.
- Batool, N., Wani, M. D., Shah, S. A., & Dada, Z. A. (2024). Tourists’ attitude and willingness to pay on conservation efforts: evidence from the west Himalayan eco-tourism sites. Environment, Development and Sustainability, 27, 18933–18951. https://doi.org/10.1007/s10668-024-04679-2
- Booth, H., Mourato, S., & Milner-Gulland, E. J. (2022). Investigating acceptance of marine tourism levies, to cover the opportunity costs of conservation for coastal communities. Ecological Economics, 201, 107578. https://doi.org/10.1016/j.ecolecon.2022.107578
- Boyle, K. J. (2017). Contingent Valuation in Practice. In: Champ, P., Boyle, K., Brown, T. (eds) A Primer on Nonmarket Valuation. The Economics of Non-Market Goods and Resources, Springer, Dordrecht, 13. pp. 83–131.
- Cahyonugroho, O. H., Hidayah, E. N., Firdaus, E., Khotimah, K. J. C., & Engineering, E. (2024). The Planning of Reduced, Reuse, and Recycle-Based Temporary Disposal Site. 20(1), 593-599. https://doi.org/110.2478/cee-2024-0045
- Carson, R., & Hanemann, M. (2006). Contingent valuation. Chapter 17 in Handbook of Environmental Economics, 2, pp. 821–936.
- Cerrano, C., Azzini, F., Bavestrello, G., Calcinai, B., Pansini, M., Sarti, M., & Thung, D. (2006). Marine lakes of karst islands in Ha Long Bay (Vietnam). Chemistry and Ecology, 22(6), 489–500. https://doi.org/10.1080/02757540601024835.
- Cerrano, C., Azzini, F., Bavestrello, G., Calcinai, B., Pansini, M., Sarti, M., & Thung, D. (2006). Marine lakes of karst islands in Ha Long Bay (Vietnam). Chemistry and Ecology, 22, 489-500. https://doi.org/10.1080/02757540601024835
- Cerveny, L., Miller, A., & Gende, S. (2020). Sustainable Cruise Tourism in Marine World Heritage Sites. Sustainability, 12, 611. https://doi.org/10.3390/su12020611
- Cheng, P., Wang, W., & Yang, S. (2024). Doing the right thing: How to persuade travelers to adopt pro-environmental behaviors? An elaboration likelihood model perspective. Journal of Hospitality and Tourism Management, 59, 191–209. https://doi.org/10.1016/j.jhtm.2024.04.009
- Claudino-Sales, V. (2018). Ha Long Bay, Vietnam. Coastal World Heritage Sites. https://doi.org/10.1007/978-94-024-1528-5_70
- Claudino-Sales, V. (2018). Ha Long Bay, Vietnam. Coastal World Heritage Sites. https://doi.org/10.1007/978-94-024-1528-5_70
- Cochran, W. G. (1977). Sampling Techniques. 3rd Edition, John Wiley & Sons, New York.
- Corpuz, M., Borea, L., Senatore, V., Castrogiovanni, F., Buonerba, A., Oliva, G., Ballesteros, F., Zarra, T., Belgiorno, V., Choo, K., Hasan, S., & Naddeo, V. (2021). Wastewater treatment and fouling control in an electro algae-activated sludge membrane bioreactor. The Science of the Total Environment, 786, 147475. https://doi.org/10.1016/j.scitotenv.2021.147475
- Costedoat, S., Corbera, E., Ezzine-de-Blas, D., Honey-Rosés, J., Baylis, K., & Castillo-Santiago, M. (2015). How Effective Are Biodiversity Conservation Payments in Mexico? PLoS ONE, 10(3), e0119881. https://doi.org/10.1371/journal.pone.0119881
- Darmawan, M., Simamora, D., Nahib, I., Ramadhani, F., Sutrisno, D., Amhar, F., Ramdhan, M., Safitri, S., Sutejo, B., Arifin, S., & Agus, S. (2025). Spatial planning model for optimizing conservation priorities for local community utilization on Arefi Island in the Raja Ampat Marine Protected Area (MPA) Southwest Papua, Indonesia. PeerJ, 13. https://doi.org/10.7717/peerj.19292
- Dat, L., Chou, S. Y., Tam, P. M., Hue, N. T., & Thuy, P. T. (2024). Factors Influencing Residents’ Willingness to Pay for Mangrove Forest Environmental Services in Phu Long, Vietnam. SAGE Open, 14(3), 1–20. https://doi.org/10.1177/21582440241264604
- Doran, R., Hanss, D., & Larsen, S. (2015). Attitudes, efficacy beliefs, and willingness to pay for environmental protection when travelling. Tourism and Hospitality Research, 15, 281–292. https://doi.org/10.1177/1467358415580360
- Durán-Román, J. L., Cárdenas-García, P. J., & Pulido-Fernández, J. I. (2021). Tourists’ willingness to pay to improve sustainability and experience at destination. Journal of Destination Marketing & Management, 19, 100540. https://doi.org/10.1016/J.JDMM.2020.100540
- Filipiak, B., Dylewski, M., & Kalinowski, M. (2020). Economic development trends in the EU tourism industry. Towards the digitalization process and sustainability. Quality & Quantity, 57, 321–346. https://doi.org/10.1007/s11135-020-01056-9
- Garrod, B., & Fyall, A. (2000). Managing heritage tourism. Annals of Tourism Research, 27(3), 682–708. https://doi.org/10.1016/S0160-7383(99)00094-8
- Ge, Y., Xu, G., Zhang, Q., Wang, X., & Li, T. (2023). Natural attributes or aesthetic attributes: Which is more valuable in recreational ecosystem services of nature-based parks considering tourists’ environmental knowledge and attitude impacts? Journal of Outdoor Recreation and Tourism, 44, 100699. https://doi.org/10.1016/j.jort.2023.100699
- Giwa, A., Dindi, A., & Kujawa, J. (2019). Membrane bioreactors and electrochemical processes for treatment of wastewaters containing heavy metal ions, organics, micropollutants and dyes: Recent developments. Journal of hazardous materials, 370, 172-195. https://doi.org/10.1016/j.jhazmat.2018.06.025
- Ha Long Bay Management, B. (2022). Synthesis report of the provincial science and technology task: Research, assessment, and determination of the tourism carrying capacity of the Ha Long Bay World Natural Heritage Site to serve management and sustainable tourism development. Retrieved from Quang Ninh, Vietnam.
- Hair Jr., J. F., Black, W. C., Babin, B. J., & Anderson, R. E. (2009) Multivariate Data Analysis. 7th Edition, Prentice Hall, Upper Saddle River, 761.
- Hall, C. M. (2001). Trends in ocean and coastal tourism: the end of the last frontier? Ocean & Coastal Management, 44(9-10), 601–618. https://doi.org/10.1016/S0964-5691(01)00071-0
- Huong, D. T. T., Ha, N. T. T., Khanh, G. D., Van Thanh, N., & Hens, L. (2021). Sustainability assessment of coastal ecosystems: DPSIR analysis for beaches at the Northeast Coast of Vietnam. Environment, Development and Sustainability, 24, 5032–5051. https://doi.org/10.1007/s10668-021-01648-x
- Konu, H., Leino, P., & Tyrväinen, L. (2024). Tourism firms’ attitudes and willingness to contribute to payments for ecosystem services in tourism. Tourism Recreation Research, 50, 478–492. https://doi.org/10.1080/02508281.2024.2312349
- Lan, B. T. H., Truong, D. D., Huan, L. H., & Hang, N. D. (2024). Valuation of tourists’ willingness to pay for ecological conservation towards a sustainable financial mechanism for national parks: an empirical case of Cuc Phuong National Park, Red River delta, Vietnam. Environmental Research Communications, 6, 115011. https://doi.org/10.1088/2515-7620/ad7fbd
- Lan, N., Maeda, Y., & Otsuka, K. (2014). Willingness to pay for biodiesel fuel for tourist boats in Halong Bay, Vietnam. OCEANS 2014 - TAIPEI, 1–8. https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964358
- Lee, Y. K., Lee, C. K., Choi, J., Yoon, S., & Hart, R. (2014). Tourism’s role in urban regeneration: examining the impact of environmental cues on emotion, satisfaction, loyalty, and support for Seoul’s revitalized Cheonggyecheon stream district. Journal of Sustainable tourism, 22, 726–749. https://doi.org/10.1080/09669582.2013.871018
- Li, Z., & Li, Y. (2024). What factors influence individuals’ willingness to pay for environmental protection: evidence from CGSS2021. Environmental Research Communications, 6, 081005. https://doi.org/10.1088/2515-7620/ad6dbe
- Lindsey, G., & Holmes, A. (2002). Tourist Support for Marine Protection in Nha Trang, Viet Nam. Journal of Environmental Planning and Management, 45, 461–480. https://doi.org/10.1080/09640560220143503
- Liu, J., Zhao, Y., & Jang, S. C. (2021). Environmental perceptions and willingness to pay for preservation: Evidence from beach destinations in China. International Journal of Tourism Research, 23(5), 792–804. https://doi.org/10.1002/JTR.2442
- Loft, L., Gehrig, S., Salk, C., & Rommel, J. (2020). Fair payments for effective environmental conservation. Proceedings of the National Academy of Sciences of the United States of America, 117, 14094–14101. https://doi.org/10.1073/pnas.1919783117
- Lukman, K. M., Uchiyama, Y., Quevedo, J. M. D., & Kohsaka, R. (2022). Tourism impacts on small island ecosystems: public perceptions from Karimunjawa Island, Indonesia. Journal of Coastal Conservation, 26, 14. https://doi.org/10.1007/s11852-022-00852-9
- Maestro, M., Pérez-Cayeiro, M., Reyes, H., & Chica-Ruiz, J. (2024). Analysis of the Management of Protected Areas in Galapagos: 60 Years after Its Declaration as a National Park. Sustainability. https://doi.org/10.3390/su16156532
- Mäntymaa, E., Tyrväinen, L., Juutinen, A., & Kurttila, M. (2019). Importance of forest landscape quality for companies operating in nature tourism areas. Land Use Policy, 104095. https://doi.org/10.1016/j.landusepol.2019.104095
- Mota, P., Da Costa, A. M., Prado, R. B., Fernandes, L., Pissarra, T., & Pacheco, F. (2023). Payment for Environmental Services: A critical review of schemes, concepts, and practice in Brazil. The Science of the total environment, 165639. https://doi.org/10.1016/j.scitotenv.2023.165639
- Muljaningsih, S. (2021). A Waste Bank Based on the 3R Concept: Student Interest in Waste Management at the Department of Economics, University of Brawijaya. Civil and Environmental Engineering, 17(2), 387-394. https://doi.org/10.2478/cee-2021-0041
- Nguyen, M. H., & Jones, T. (2022). Building eco-surplus culture among urban residents as a novel strategy to improve finance for conservation in protected areas. Humanities & Social Sciences Communications, 9, 426. https://doi.org/10.1057/s41599-022-01441-9
- Pagiola, S., Rios, A., & Arcenas, A. (2010). Poor Household Participation in Payments for Environmental Services: Lessons from the Silvopastoral Project in Quindío, Colombia. Environmental and Resource Economics, 47, 371–394. https://doi.org/10.1007/S10640-010-9383-4.
- Postuła, M., & Radecka-Moroz, K. (2020). Fiscal policy instruments in environmental protection. Environmental Impact Assessment Review, 84, 106435. https://doi.org/10.1016/j.eiar.2020.106435.
- Razzaq, A., Fatima, T., & Murshed, M. (2021). Asymmetric effects of tourism development and green innovation on economic growth and carbon emissions in top 10 GDP countries. Journal of Environmental Planning and Management, 66, 471–500. https://doi.org/10.1080/09640568.2021.1990029.
- Schuhmann, P. W., Bangwayo-Skeete, P., Skeete, R., Seaman, A. N., & Barnes, D. C. (2023). Visitors’ willingness to pay for ecosystem conservation in Grenada. Journal of Sustainable Tourism, 32(8), 1644–1668. https://doi.org/10.1080/09669582.2023.2259119.
- Shang, Y., Lian, Y., Chen, H. L., & Qian, F. (2023). The impacts of energy resource and tourism on green growth: Evidence from Asian economies. Resources Policy, 81, 103359. https://doi.org/10.1016/j.resourpol.2023.103359.
- Shella, A. F., Ekayani, M., & Sapanli, K. (2024). Tourist-Based Waste Management with Deposit Refund Implementation in Manggar Beach Area, Balikpapan Indonesia. Journal La Lifesci, 5(3), 225–234. https://doi.org/10.37899/journallalifesci.v5i3.1395.
- Spalding, M., Burke, L., Wood, S. A., Ashpole, J., Hutchison, J., & Zu Ermgassen, P. (2017). Mapping the global value and distribution of coral reef tourism. Marine Policy, 82, 104–113. https://doi.org/10.1016/j.marpol.2017.05.014
- Thi, H. H., Hong, H. N. T., Trang, B. U. I., Tinh, T. R. A. N., VAN, T. D., & Hoai, T. N. T. (2024). Assessing knowledge, attitude, and behavior in household solid waste management in northern Vietnam. Civil And Environmental Engineering, 20(1), 508-525. https://doi.org/10.2478/cee-2024-0039
- Thung, D., Ngai, N. D., Van Thao, D., Sinh, N., & Dong, D. M. (2019). Marine biodiversity in Ha Long bay and Cat Ba archipelago. Vietnam Journal Science and Technology, 19(3), 363–369. https://doi.org/10.15625/1859-3097/19/3/13174
- Thuy, P. T., Hue, N. T., & Dat, L. (2025). Households’ Willingness-to-Pay for Mangrove Environmental Services: Evidence from Phu Long, Northeast Vietnam. Trees, Forests and People, 15, 100474. https://doi.org/10.1016/j.tfp.2023.100474
- Timothy, D. J., & Boyd, S. W. (2003). Heritage tourism.
- Toan, D. V., Dat, L. D., Ha, P. N. H., Anh, T. T. T., Anh, L. T., Tien, D. D., Khanh, L. V., Hieu, D. H., & Thuong, T. T. T. (2018). PSSA- international solution to protect the biodiversity in Ha Long Bay - Cat Ba marine area. Journal of Marine Science and Technology, 18(3), 304–311. https://doi.org/10.15625/1859-3097/18/3/13241
- Trang, C. T. T., Lan, T. D., Huong, D. T. T., Ha, T. M., Ha, N. T. T., Kha, P. T., Bach, N. V., Nam, L. V., & Ngoc, D. H. (2022). Environmental quality assessment of sandy beaches in Ha Long - Cat Ba area (Vietnam). Journal of Marine Science and Technology, 22(1), 67–78. https://doi.org/10.15625/1859-3097/16061
- Van Hieu, N., Thuy, D., & Nam, N. (2020). Payment For Environmental Service: An Application in Tourism in Vietnam. SEAS (Sustainable Environment Agricultural Science), 4(1), 77–87. https://doi.org/10.22225/seas.4.1.1691.77-87
- Vázquez-Rodríguez, P., Romero-Castro, N., Šević, A., & Quiñoá-Piñeiro, L. (2024). (Un)willingness to pay to visit a national park from a sustainable entrepreneurial tourism perspective. Journal of Destination Marketing & Management, 34, 100933. https://doi.org/10.1016/j.jdmm.2024.100933
- Von Saltza, E., & Kittinger, J. (2022). Financing conservation at scale via visitor green fees. Frontiers in Ecology and Evolution, 10, 1036132. https://doi.org/10.3389/fevo.2022.1036132
- White, C., Mangubhai, S., Rumetna, L., & Brooks, C. (2022). The bridging role of non-governmental organizations in the planning, adoption, and management of the marine protected area network in Raja Ampat, Indonesia. Marine Policy, 141, 105095. https://doi.org/10.1016/j.marpol.2022.105095
- Woo, M., Ryu, H., Gu, Y., Kim, T., Kim, J., Kim, H., & Lim, D. (2024). Development of an onboard waste-to-energy process for disposing marine plastics debris. Journal of Material Cycles and Waste Management, 26, 2686-2695. https://doi.org/10.1007/s10163-024-01984-w