Application of Mapped Plots for Single-Owner Forest Surveys
نویسندگان
چکیده
estimates of quantities, such as per acre volume, within conditions of interest. If the plot is half natural pine and half plantation pine, it is clear that the combined plot data are not representative of either condition. The most important mapped plot assumption made explicit in Equation 1 is that the expected amount of y on a partial plot is proportional to a. In particular, if half the plot is in condition c, then we expect y to be half of the value for a plot fully in the condition. This is analogous to assuming that 10 ha of pine will have half the volume of 20 ha of pine. It is an assumption that is implicitly made in most forest inventories. The a value in Equation 1 comes from the colocated COND plot. The following equation states that the expected value of a is equal to the overall condition proportion:
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