Yokoyama, S. 2023. Is Japanese natto a traditional fermented food? Fermentation in Italy & Japan 2023 May 11, 2023 (Online), The Borromini Institute, Italy.
Yokoyama, S. 2014. Perspectives and directions for future research in Southeast Asian studies: Reflections of Japanese geographer's experience. Annual Meeting of Korean Geographers 2014 June 21, 2014, Seoul National University, Korea
Yokoyama, S. 2012. A cultural geographical study on non-salty fermented soybeans in Laos, Myanmar and Thailand. Special Lecture, Department of Microbiology, Sikkim University September 25, 2012, Sikkim University, Gangtok, India.
Yokoyama, S. 2006. Forest use and indigenous eco-knowledge in northern Laos. Geography Colloquium, Department of Geography, University of Hawaii at Manoa May 2, 2006, University of Hawaii at Manoa, USA.
Yokoyama, S. 2022. Relationship between Population Dynamics and Paddy Holdings in Central Laos. International Workshop on Changing Landscapes and Livelihoods in Southeast Asian Massif, October 17, 2022, Nagoya University, Japan.
Yokoyama, S., Takahashi, S., Niwa, T. and Nishimoto, F. 2021. Moving population and changing paddy holdings: Dynamics for three generations in a remote area of northern Laos. The 34th International Geographical Congress (IGC), August 18, 2021, オンライン開催 (Istanbul University, Istanbul, Turkey).
Jiang, H.W., Nishimoto, F., Sato, R. and Yokoyama, S. 2018. Daily activity apace and malaria infection risk: A pilot study on activity direction distribution in Xepon District, Lao PDR. 12th Laos National Health Research Forum, Oct 16-17, 2018, Crowne Plaza Hotel, Vientiane Capital.
Yoshida, K., Shoji, G., Yokoyama, S. and Thompson, E.C. 2018. Labor allocation in rural households: The case of a suburban mountainside settlement in Japan. Association for Asian Studies, Annual Conference 2018 March 23, 2018, Marriott Wardman Park, Washington, D.C. USA.
Yokoyama, S. 2018. Local plant use for Natto production in mainland Southeast Asia and Himalayas. The International Workshop on Forest Ecological Resources Security for Next Generation: Development and Routine Utilization of Forest Ecological Resource and their Domestication, January 16, 2018, Kyoto University, Japan
Nguyen T.H.N. and Yokoyama, S. 2017. The trading structure of maize seed and products in the Northwestern region, Vietnam Case study in Yen Chau district, Son La province. The 13th Southeast Asian Geography Association (SEAGA) International Conference 2017, November 29, 2017, Universitas Indonesia, Depok, Indonesia
Yokoyama, S. 2017. Current situation of Japanese smallholders. Asian smallholders: Transformation & persistence, 2nd Workshop, January 23, 2017, Singapore National University, Singapore.
Yokoyama, S. 2016. How had population changes affected paddy holdings? A result of dynamics for three generations in a rice farming village of central Laos. The 33rd International Geographical Congress (IGC), August 24, 2016, China National Convention Center, Beijing, China.
Yokoyama, S. 2015. Population increase, temporary transnational migration, and paddy holdings in a rural village of Laos. SEASIA 2015 Conference, December 12, 2015, Kyoto International Conference Center, Japan.
Yokoyama, S. 2015. Demographic change and farmland holdings in a rural village of Laos. Regional Conference of the International Geographical Union (IGU), 2015 Moscow Conference, August 20, 2015, Lomonosov Moscow State University, Russia
Shirai, M., Jin, Y., Yokoyama, S. and Yoda, K. 2014. Roles of swidden fallows for free-grazing water buffalo in northern Laos. The 20th Symposium of the International Society on Biotelemetry (ISOB 2014), May 21, 2014, Kyoto University, Japan.
Yokoyama, S. and Ingxay, P. 2014. How did local farmers in Chinese border areas accept new commercial crops? Contract farming in Boun Neua district of Phongsaly province. The 15th NAFRI Anniversary Symposium on Agriculture and Forestry Research for Development, April 9, 2014, NAFRI, Vientiane, Lao P.D.R.
Yokoyama, S. 2014. Contract farming in the Chinese border region of northern Laos. Seminar on Northeast Thailand in Transition: Landscape, Livelihood and Life, February 11, 2014, Khon Kaen University, Thailand.
Nishimoto, F., Kaneko, S., Jiang, H.W., Yokoyama, S., Okumura, J., Sato, M., Pongvongsa, T., Kobayashi, J., Nonaka, D., Sato, A., Moji, K. and Kounnavong, S. 2013. HDSS as a platform of integrated transdisciplinal area studies. PNC Annual Conference and Joint Meetings 2013, December 11, 2013, Kyoto University, Japan.
Inxay, P. and Yokoyama, S. 2013. Unexpected situation in opland people's livelihood: a case study in northern Laos. Regional Conference of the International Geographical Union (IGU), 2013 Kyoto Conference, August 7, 2013, Kyoto International Conference Center, Japan.
Yokoyama, S. and Inxay, P. 2013. Agrarian livelihood change in Chinese border areas of northern Laos. The 21th Annual Colloquium of the International Geographical Union Commission on the Sustainability of Rural Systems, July 30, 2013, Nagoya University, Japan.
Yokoyama, S. 2012. Resource chains: A case study of Machilus spp. (Yang Bong) in Japan, Thailand and Laos. International Workshop on Landuse Diversity and Autonomy in Southeast Asia, November 8, 2012, Research Institute for Humanity and Nature, Japan.
Yokoyama, S. 2011. Changes in shifting cultivation and farmers' livelihood in the mountainous mainland Southeast Asia. International Geographical Union (IGU), 2011 Santiago Conference, November 15, 2011, Liberator Bernardo O`Higgins Military School, Santiago, Chile
Shirai, M., Zhang, X., Yokoyama, S., Okamoto, K. and Yoda, K. 2011. Recording movement pattern of cattle by GPS data loggers in Lao People's Democratic Republic. International Conference on Sustainable Animal Agriculture for Developing Countries 2011, July 26-29, 2011, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Yokoyama, S. 2010. Indigenous eco-knowledge and swidden cultivation in northern Laos.Environmental studies in Laos and Japan: Sharing ideas and practice (The 1st NAFRI-Nagoya University Joint Workshop), March 10, 2010, NAFRI, Lao P.D.R.
Yokoyama, S. 2009. The aim of the workshop "Understanding the contemporary environmental matters in mainland Southeast Asia".Understanding the Contemporary Environmental Matters in Mainland Southeast Asia (Nagoya University Global COE International Workshop), December 5, 2009, Nagoya University.
Yokoyama, S. 2008. NTFP trading and livelihood change under the progress of globalization in the northern mountainous region of Laos. ラオスの自然と生業のダイナミクス：東南アジア大陸山地部研究会および東南アジア大陸部における土地利用変化のメカニズム, 2008年7月19日, 京都大学.
Yokoyama, S. 2008. Political ecology of livelihood and land use in rural Laos. The 31st International Geographical Congress (IGC), August 13, 2006, Le Kram Center, Tunis, Tunisia.
Yokoyama, S. 2007. Forest policy for maintaining indigenous eco-knowledge. International Workshop on Sustainable Natural Resources Management of Mountainous Regions in Laos, November 30, 2007, Luang Namtha Provincial Hall, Luang Namtha, Lao P.D.R.
Ochiai, Y. and Yokoyama, S. 2007. Plant use in everyday life: Cultural landscape and complex subsistence activities in hill villages of northern Laos. International Workshop on Sustainable Natural Resources Management of Mountainous Regions in Laos, November 30, 2007, Luang Namtha Provincial Hall, Luang Namtha, Lao P.D.R.
Ochiai, Y. and Yokoyama, S. 2007. Plant uses mapping in villages of northern Laos: An ecological approach for allocation and process. International Workshop on Sustainable Land Management Network in the Mountainous Region of Mainland Southeast Asia, August 11, 2007, Xingping, Yunnan, China.
Yokoyama, S., Tanaka, K. and Phalakhone, K. 2006. Forest policy and swidden agriculture in Laos. The 8th Southeast Asian Geography Association Conference, November 30, 2006, Namyang Girls High school, Singapore.
Tanaka, K., Yokoyama, S. and Phalakhone, K. 2006. Land-allocation program and stabilization of swidden agriculture in the northern mountain region of Laos. Synthesis Workshop on Shifting Agriculture, Environmental Conservation and Sustainable Livelihoods in the Marginal Mountain Environments, September 23-25, 2006, Guwahati, India.
Yokoyama, S. and Ochiai, Y. 2006. Forest use and indigenous eco-knowledge in northern Laos. International Geographical Union (IGU) 2006 Brisbane Conference, July 4, 2006, Queensland University of Technology, Brisbane, Australia.
Yokoyama, S. 2005. NTFPs trade in the northern Laos: The progress of globalization and the change of livelihood in the mountainous region. Mainland Southeast Asia in Transition: Resource and Eco-history, June 17, 2005, Yunnan University Anthropology Museum, Kunming, China.
Yokoyama, S. 2005. The trade flow of agro-forest products and commodities in northern mountainous regions of Laos. First International Conference on Lao Studies, May 20, 2005, Northern Illinois University, DeKalb, Illinois, U.S.A.