Guidelines & Tools Mapping Critical Levels for Vegetation Published 2017 Share SHARE Facebook share Twitter LinkedIn Copy URL Email Download Download FinalnewChapter3v4Oct2017_000.pdf en Added on: 20 May, 2025 Breadcrumb Home Resource Library Mapping Critical Levels For Vegetation The ICP Vegetation Task Force (International Cooperative Programme on Effects of Air Pollution on Natural Vegetation and Crops) is a working group under the UNECE/CLRTAP. The purpose of this chapter is to provide information on the critical levels of air pollutants for vegetation and the methodology for calculating critical level exceedance. Related partners United Nations Economic Commission for Europe (UNECE)