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RESULTS AND COMPARISONS <br /> <br />In 1979, a inventory was conducted in the City of Ramsey to <br />determine ~he population characteristics of tree species in the <br />City of Ra~sey.(1) In 1992, an inventory was begun to classify <br />forest cover types, tree populations, and possible disease <br />problems. <br /> <br />In 1979, data from 6 sample plots taken in residential areas was <br />extrapolated to represent both residential (parcels less than Five <br />acres) andinon-residential areas (greater than five acres.) Data <br />from these plots may underestimate populations because of physical <br />improvements made to the site. In 1992 data was calculated from 31 <br />sample plo~s scattered throughout the city. This data assumed that <br />stands were ~ully stocked. <br /> <br />The results of this inventory will be presented along with those of <br />the 1979 p~ogram. Because of the difference in the methods of the <br />two inventories, analysis of comparisons can be difficult. <br /> <br />Acreage <br /> <br />In 1979, 34% of Ramsey was considered wooded. Data ~rom the most <br />recent inventory shows that 26% of the city is wooded, a reduction <br />of 8%. <br /> <br />Population <br /> <br />The two reports also depict different populations. The inventory of <br />1979 was conducted almost entirely through aerial photography. This <br />can emphasize the overstory trees while tending to de-emphasize <br />small and u~derstory trees. This can under estimate the population <br />of the forest. It should be noted that there was no confidence <br />level estab%ished for populations in rural lands (table 3 of 1979 <br />report.) R~ral land contained the largest percentage of wooded <br />lands. This data could be considered faulty. <br /> <br />The population estimates in the 1992 inventory were made through <br />the statistical analysis of 30 field plots. Analysis of the field <br />plots revea~ a population of approximately 3.5 million trees (+/- <br />10% at 80% ~onfidence level.) This number initially seemed high, <br />but review iby University of Minnesota forestry faculty supports <br />these numbers. This number consider~ trees in the understory as <br />well as the overstory. "-,~'. <br /> <br />(1) 1979 data is from7 Population Characteristics of ~he Tree <br />Species in ~he City of Ramsey: Richard A. Dahlman, Consultant <br />Forester, 1979 <br /> <br />Kunde Co., Inc. - Consulting Foresters <br /> <br /> <br />