. 1980-1990 national program of research for forests and associated rangelands. --. Forests and forestry Research United States; Rangelands Research United States. HI Above Watershed research addresses erosion and sedi- ment production, channel stabilization, and the in- fluence of forest management practices on water yield, regimen, and quality. Right Scientists study the impacts of recreationists on wilderness environments. Fire, insects, and disease have a significant impact on forest resources: mortality and loss of growth equal a sizable portion of the annual harvest. Forest insect and di
. 1980-1990 national program of research for forests and associated rangelands. --. Forests and forestry Research United States; Rangelands Research United States. HI Above Watershed research addresses erosion and sedi- ment production, channel stabilization, and the in- fluence of forest management practices on water yield, regimen, and quality. Right Scientists study the impacts of recreationists on wilderness environments. Fire, insects, and disease have a significant impact on forest resources: mortality and loss of growth equal a sizable portion of the annual harvest. Forest insect and disease research stresses the development of pro- tective measures that integrate silvicultural practices with chemical and biological controls. Fire researchers determine basic fire behavior and fire effects, develop ecologically sound and economically efficient fire management and control techniques, and develop methods for managing air 9. 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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