. Protecting and enhancing America's forests and rangelands : 1986 research accomplishments. Forests and forestry United States; Rangelands United States. Before several years of ozone exposure, the Jeffrey pine from which this core was taken exhibited good annual growth. Lately, however, the annual rings are much closer together. Growth index studies in the Sequoia and Kings Canyon National Parks indicate that older trees experience greater growth reductions due to ozone injury than younger trees. 31. Please note that these images are extracted from scanned page images that may have been digi
. Protecting and enhancing America's forests and rangelands : 1986 research accomplishments. Forests and forestry United States; Rangelands United States. Before several years of ozone exposure, the Jeffrey pine from which this core was taken exhibited good annual growth. Lately, however, the annual rings are much closer together. Growth index studies in the Sequoia and Kings Canyon National Parks indicate that older trees experience greater growth reductions due to ozone injury than younger trees. 31. 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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Keywords: ., book, bookcentury1900, booksubjectforestsandforestryunitedstates
