How scale affects environmental impact assessment

Research output: Contribution to journalArticle

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Abstract

This paper evaluates the influence of geographical previous termscalenext term on the outcomes of previous Environmental Impact Assessmentsnext (EIAs). The paper presents results obtained by using spatial data with different scales for an EIA for a proposed road bypass in Southeast England (the Hastings Bypass). Scale effects were measured separately for spatial extent and spatial detail, and were measured both quantitatively using a Geographical Information System (GIS) and qualitatively using the judgement of EIA experts. The study found that changes in scale could affectthe results of EIAs. For example, the impact significance and the number of houses affected by air pollution from the road varied according to the scale used. These observed scale dependent changes suggest that scale choice can have important repercussions for the accuracy of an EIA study. This situation is made more serious when it is recognized that many environmental impact statements (EIS) fail to mention in explicit terms the scale used. The paper concludes with recommendations for future practice on how best to control the quality of EIAs in relation to scale choice.
LanguageEnglish
Pages287-306
Number of pages19
JournalEnvironmental Impact Assessment Review
Volume22
Issue number4
DOIs
Publication statusPublished - 2002

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environmental impact assessment
environmental impact
bypass
road
scale effect
spatial data
atmospheric pollution
GIS
air pollution
Geographical Information System
expert

Keywords

  • geographical information system
  • scale effects
  • environmental impact assessment
  • quality control

Cite this

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How scale affects environmental impact assessment. / João, Elsa.

In: Environmental Impact Assessment Review, Vol. 22, No. 4, 2002, p. 287-306.

Research output: Contribution to journalArticle

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