Last Updated :2021/04/05

大学院人間社会科学研究科 准教授
国際経済開発プログラム、大学院人間社会科学研究科 鏡山1-5-1, 東広島市、広島県 739-8529 International Economic Development Program, Graduate School of Humanities and Social Sciences (Former IDEC)211
I have been working in the research areas related to pertinent rural issues in developing countries such as livelihoods, poverty, food insecurity, farming, migration, climate change and etc.



  • 2011年10月01日, 2012年09月30日, 広島大学, 大学院国際協力研究科, 特任助教
  • 2014年03月01日, 2017年03月31日, 広島大学, たおやかな平和共生社会の実現のための教育プログラム (大学院国際協力研究科), 特任助教
  • 2017年04月01日, 2020年03月31日, たおやかな平和共生社会の実現のための教育プログラム (大学院国際協力研究科), たおやかな平和共生社会の実現のための教育プログラム, 特任准教授


  • 博士(学術) (広島大学)
  • 修士(学術) (広島大学)
  • Master (Science in Agriculture) (Tribhuvan University/Institute of Agriculture and Animal Science)


  • 社会科学 / 経済学 / 経済政策


  • Rural livelihoods, climate change, poverty, food insecurity, farming, remittance, agricultural production economics, agricultural product marketing


  • International Association of Agriculture Economists
  • Society of Agricultural Scientists - Nepal



  1. 2021年, 修士課程・博士課程前期, 集中, 国際協力論
  2. 2021年, 修士課程・博士課程前期, 3ターム, 農業生産経済分析
  3. 2021年, 修士課程・博士課程前期, 年度, 特別研究(2021年10月博士課程前期入学生用)
  4. 2021年, 博士課程・博士課程後期, 年度, 特別研究(2021年10月入学・博士課程後期)
  5. 2021年, 修士課程・博士課程前期, セメスター(前期), Developing Designing Ability
  6. 2021年, 修士課程・博士課程前期, 集中, Onsite Course Rotation
  7. 2021年, 修士課程・博士課程前期, 集中, Onsite Training
  8. 2021年, 修士課程・博士課程前期, 集中, Onsite Training



  1. Vulnerability of Chepang households to climate change and extremes in the Mid-Hills of Nepal, CLIMATIC CHANGE, 135巻, 3-4号, pp. 521-537, 201604
  2. Migration and remittance in Nepal: A review of the push-pull factors and socioeconomic issues, Journal of Contemporary India Studies: Space and Society, Hiroshima University, 6巻, pp. 41-53, 201603
  3. Opportunity cost of REDD+ in community forest in the Mid-Hills of Nepal: A case study of Thangsa Deurali Community Forest, Dolakha, Journal of Contemporary India Studies: Space and Society, Hiroshima University, 6巻, pp. 27-39, 201603
  4. Determinants of maize seed income and adoption of foundation seed production: evidence from Palpa District of Nepal, Agriculture & Food Security, 6巻, 41号, 2017


  1. Effect of Climate Variables on Yield and Yield Variability of Rice in Different Agro-ecological Regions of Nepal: A Panel Data Analysis, JOSHI, Niraj Prakash PIYA, Luni, JOSHI, Niraj Prakash PIYA, Luni, Conference on Agriculture and Climate Change, 2017年03月27日, 通常, 英語, Elsevier, Melia Sitges, Sitges, Climate change is expected to impact food security in Nepal through its adverse impact on agriculture, which is predominantly subsistence. Considering the importance of rice in food habit of Nepali, thereby food security, this paper makes an empirical analysis of climate variables’ impact on yield and yield variability of rice in different regions of Nepal. The data of climate variables on monthly basis, namely minimum temperature, maximum temperature and precipitation from 1978 to 2013 were obtained from Department of Hydrology and Meteorology. Multiple regression analysis method, considering the five nearest meteorological stations, is adopted to estimate missing data. Empirical Bayesian Kriging technique was employed to interpolate the climate data using ArcGIS10.4.1 for 15 regions, which were divided based on existing agro-ecological and administrative division. The data on rice production attributes such as production, area and yield was compiled from different volumes of ‘Statistical Information on Nepalese Agriculture’. The panel data on climate variables; and rice production attributes were prepared for data analysis. The impact was assessed using a stochastic production function approach suggested by Just & Pope (1978) for panel data. Increased rice yield and area has contributed in increased production. However, rice yield in some regions is dwindling. Climate trends have significant influence on rice yield and yield variance in various magnitude and direction in different regions. Empirical evidences show the adverse effect of increasing temperature on rice yield in Tarai. Measures to cope with the increasing temperature is important in entire Tarai. Similarly, given the limited irrigation coverage, rainfall is still significant determinant of rice yield. However, its higher interannual variability has adversely affected rice yield. Regulation of water through development of proper infrastructures would help to adapt the higher interannual variability of rainfall, which is expected to become more intense due to anticipated change in climate.
  2. General scenario of production, processing and marketing of agriculture products, and its trade in Nepa, JOSHI, Niraj Prakash, JOSHI, Niraj Prakash, First Research Meeting, 2015年05月05日, 招待, 英語, The Open University of Japan
  3. Prospect of organic agriculture in achieving food security in Least Developed Countries, JOSHI, Niraj Prakash PIYA, Luni MAHARJAN, Keshav Lall, JOSHI, Niraj Prakash PIYA, Luni MAHARJAN, Keshav Lall, 2nd Annual International Conference on Poverty and Sustainable Development, 2015年12月15日, 通常, 英語, The International Institute of Knowledge Management, Colombo, Sri Lanka, Hotel Galadari, Colombo, Sri Lanka, This paper aims to analyze prospects of Organic agriculture (OA) in achieving food security goal of Least Developed Countries (LDCs). FAOSTAT data on food balance and literature are the main source of data. Yield ratios of crops show higher yield from OA compared to conventional agriculture in LDCs. Food supply is growing at higher rate in LDCs than Northern America between 1961 and 2011. However, growth rate in nutrient supply in LDCs is meager. Hence, current food supply in the region is not able to supply the standard nutrient requirement. Cereal is the single most important food items contributing to nutrient supply in LDCs indicating lack of nutrient diversity. Under such context OA would increase food supply of all food categories. Consequently, LDCs can achieve the standard nutrient requirement and help in dealing with persistent undernourishment in LDCs. However, concerted effort is necessary for wider acceptability of OA in LDCs. Besides, the possible challenges brought by wider adoption of OA such as increased demand for organic inputs should not be overlooked while formulating policy to expand OA in LDCs