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AN ALTERNATIVE METHOD FOR ESTIMATING BIOGENIC VOC EMISSIONS IN EPA REGION I
Citation:
Pierce, T., C. Geron, AND T. Birth. AN ALTERNATIVE METHOD FOR ESTIMATING BIOGENIC VOC EMISSIONS IN EPA REGION I. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-93/034 (NTIS PB93158830), 1992.
Description:
Regional estimates of biogenic volatile organic compound (VOC) emissions are needed for computer simulations of photochemical smog. ince forests and agricultural crops are the primary emitters of biogenic voc, it is important to develop reliable estimates of their areal coverage and foliar density. his report describes a method to update these data using regularly-compiled data sets. he USDA Forest Inventory and Analysis (FIA) data collected on approximately ten-year cycles are used to describe areal extent, species composition, and tree diameter distributions of forests within the study area. he traditional allometric equation (power function) is used to estimate dry foliar mass as a function of diameter-at-breast height. eparate equations are used for tree genera common to the New England area. he U.S. Census of Agriculture, collected on five-year cycles, is used to provide county-level cropland statistics to estimate area of crops in various emission categories. .S. EPA Region I (Connecticut, Massachusetts, Maine, New Hampshire, Rhode Island, and Vermont) forests and cropland are analyzed in this paper. he FIA and Census of Agriculture data are available for other regions in the U.S., where these methods may be applied.
