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A pilot study for estimating land use change Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_projects/kd17ct58r

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  • A two stage area-point sampling design was tested to estimate land use change in a fast growth county. Random square miles were selected, then subsampled at a density of 20 points per square mile. Twelve land use categories were derived from an aggregation of the USGS Land Use! Land Cover system. High altitude color infrared aerial photography was interpreted for two dates nine years apart. The sample design was tested empirically against digitized values obtained from a land use inventory at one date. Paired sample differences, of land use proportions within the sample squares, were used to derive land use change statistics. Sample points were paired between dates to identify changes between land use categories through the construction of transition matrices. Paired sample differences are recommended to specifically address land use change. An initial 5% sample of paired differences is advised to base the sample size upon land use change at the reporting level of interest. Recommendations are suggested for stratification to reduce the sample variances, thereby increasing the precision.
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