方法对比

	Climate Vulnerability Index	EJ Screening Index (EJScreen-Style)
领域	Environmental Sociology	Environmental Sociology
方法族	MCDM	MCDM
起源年份	2003	2015
提出者	Susan L. Cutter (social vulnerability); IPCC framing via Smit & Wandel	U.S. Environmental Protection Agency (EJScreen team)
类型	Composite index aggregating exposure, sensitivity, and adaptive capacity	Composite percentile index combining environmental and demographic indicators
开创性文献	Cutter, S. L., Boruff, B. J., & Shirley, W. L. (2003). Social Vulnerability to Environmental Hazards. Social Science Quarterly, 84(2), 242-261.	U.S. Environmental Protection Agency (2024). EJScreen Technical Documentation for Version 2.3. Washington, DC: U.S. EPA.
别名	Composite Climate Vulnerability Index, Climate Risk and Vulnerability Index, IPCC Vulnerability Composite, Social Vulnerability to Climate Index	Environmental Justice Index, EJ Composite Indicator, EJScreen Index, Cumulative Environmental Burden Index
相关	4	4
摘要	A climate vulnerability index is a composite indicator that combines measures of exposure to climate hazards, sensitivity to those hazards, and adaptive capacity into a single comparable score for places or populations. The conceptual backbone is the IPCC framing, articulated clearly by Smit and Wandel, in which vulnerability rises with exposure and sensitivity and falls with the capacity to adapt. The measurement machinery owes much to Susan Cutter's Social Vulnerability Index, which showed how to select, normalize, and statistically reduce many socioeconomic variables into a defensible index of who is most at risk. A climate vulnerability index merges these traditions: it assembles biophysical exposure indicators with social sensitivity and adaptive-capacity indicators, puts them on a common scale, and aggregates them. The output ranks counties, communities, or households so that scarce adaptation resources can be targeted. Because it is a composite, every step, indicator choice, normalization, weighting, embeds judgments that must be made transparent.	An EJ screening index is a composite indicator that combines an environmental burden measure with a demographic vulnerability measure to flag communities that experience both high pollution and concentrations of low-income residents and people of color. The canonical implementation is the U.S. Environmental Protection Agency's EJScreen tool, whose technical documentation specifies how each environmental indicator is paired with a demographic index and converted into a nationwide percentile. The method is deliberately a screening device rather than a definitive measure: it is meant to surface places that warrant a closer look, not to settle exposure or causation. Each EJ index multiplies an environmental indicator by the gap between local and national demographic disadvantage, so that both high pollution and high vulnerability are required to score highly. Percentile ranking then makes otherwise incommensurable indicators comparable across the country. The result is a transparent, reproducible map of potential environmental justice concern.