. Advancing knowledge of forests and rangelands : 1984 research accomplishments. Wood Research United States Bibliography; Forests and forestry Research United States Bibliography; Forest fires Research United States; Insect pests Research United States; Forest management Bibliography. Research Helps Meet Clean Air Standards Recent amendments to the Clean Air Act have shifted emphasis from urban to regional air quality and have focused attention on various sources of pollution, such as particulates from prescribed burning. New information from research at the Pacific Northwest Station is help-
. Advancing knowledge of forests and rangelands : 1984 research accomplishments. Wood Research United States Bibliography; Forests and forestry Research United States Bibliography; Forest fires Research United States; Insect pests Research United States; Forest management Bibliography. Research Helps Meet Clean Air Standards Recent amendments to the Clean Air Act have shifted emphasis from urban to regional air quality and have focused attention on various sources of pollution, such as particulates from prescribed burning. New information from research at the Pacific Northwest Station is help- ing the Forest Service and the States meet clean air requirements. Research has developed guidelines for prescribed burning that will help mini- mize harmful pollution. For example, logged units should be burned as soon as possible after timber harvest. In this manner, production of toxic gases is minimized and formation of particulate matter is reduced. Emissions are lower with a hot, flaming burn than with a smoldering fire. Thus, by controlling the timing and intensity of burn, smoke can be minimized, more burning days are possible, and air quality is improved. Increasing utilization of logging residues can reduce emissions by 17 to 30 percent. As air resource guidelines are tightened, burning costs per acre can be increased, but this new information gives managers the ability to hold costs down and still meet air quality Emissions from slash burn are sampled with instruments suspended over the fire. 33. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Forest Service. [Washington, D. C. ?] : U. S. Dept. of Agriculture, Forest Service
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