手法を比較

	Livelihood Diversification Analysis	Household Livelihood Survey
分野	Development Studies	Development Studies
系統	Process / pipeline	Process / pipeline
提唱年	1998	2000
提唱者	Frank Ellis; Christopher Barrett, Thomas Reardon & Patrick Webb	Frank Ellis; CIFOR Poverty Environment Network
種類	Quantitative and analytical method for studying livelihood portfolios	Multi-source income and assets household survey
原典	Ellis, F. (1998). Household strategies and rural livelihood diversification. The Journal of Development Studies, 35(1), 1-38.	Ellis, F. (2000). Rural Livelihoods and Diversity in Developing Countries. Oxford: Oxford University Press. ISBN: 9780198296966
別名	Income diversification analysis, Rural diversification analysis, Livelihood portfolio analysis, Diversification index analysis	Livelihood survey, Household income survey, Rural livelihoods survey, Income and assets survey
関連	4	4
概要	Livelihood diversification analysis studies how rural households spread their activities and income across multiple sources rather than relying on a single occupation or crop. Developed conceptually by Frank Ellis and refined empirically by Christopher Barrett, Thomas Reardon, and Patrick Webb, it combines the enumeration and classification of household income activities with quantitative measures of diversity — the number of income sources, the share of non-farm income, and concentration indices such as the Herfindahl or Simpson index — to characterise livelihood portfolios and distinguish diversification driven by distress from that driven by opportunity.	A household livelihood survey is an instrument designed to capture the full portfolio of activities, income sources, assets, and expenditures through which a household secures its living. Rooted in the rural-livelihoods literature associated with Frank Ellis and in global comparative income studies such as the CIFOR Poverty Environment Network, it measures welfare and resilience by mapping the diversity of a household's economic activities — farming, wage labour, self-employment, environmental harvesting, transfers, and remittances — rather than reducing the household to a single income or consumption figure.