方法对比

	Location Quotient	Social Accounting Matrix
领域	经济学	经济学
方法族	Process / pipeline	Process / pipeline
起源年份	1960	1962
提出者	Developed in regional science; codified by Walter Isard	Richard Stone; popularized by Graham Pyatt & Jeffery Round
类型	Descriptive index of relative regional concentration	Comprehensive, square, double-entry accounting framework
开创性文献	Isard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. Cambridge, MA: MIT Press. ISBN: 9780262090032	Pyatt, G., & Round, J. I. (Eds.). (1985). Social Accounting Matrices: A Basis for Planning. Washington, DC: The World Bank. ISBN: 9780821305508
别名	LQ, Coefficient of Localization, Regional Specialization Ratio	SAM, Social Accounting Framework, SAM Multiplier Model
相关	3	3
摘要	The location quotient (LQ) is a simple descriptive index that measures how concentrated an industry is in a region relative to a larger reference area, usually the nation. It is the ratio of the industry's share of local employment (or output) to its share of national employment. An LQ above one means the region is more specialized in that industry than the nation as a whole; an LQ below one means it is under-represented.	A social accounting matrix (SAM) is a square, double-entry table that records all transactions among the production sectors, factors of production, institutions (households, firms, government), and the rest of the world in an economy for a given year. It extends the input-output table by closing the circular flow of income — connecting how value added becomes factor income, factor income becomes household income, and household income becomes demand — so that every account's receipts (its row) exactly equal its expenditures (its column).