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Abstract
The objectives of the North Central Research Station, USDA Forest Service, in developing procedures for annual forest inventories include establishing the capability of producing annual estimates of timber volume and related variables. The inventory system developed to accomplish these objectives features an annual sample of measured field plots and techniques for updating data for plots measured in previous years. This paper describes and evaluates the feasibility of updating techniques and,compares the bias and precision of the annual estimates they produce. The analyses indicated that simple, plot-level imputation and modeling techniques produced adequately unbiased and precise estimates of basal area per acre for large area estimates.
Parent Publication
Citation
McRoberts, Ronald E. 2000. Evaluating imputation and modeling in the North Central region. In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C., eds. Proceedings of the First Annual Forest Inventory and Analysis Symposium; Gen. Tech. Rep. NC-213. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station: 43-48
