Figure 48: Default Sample Design form Select Save once all choices have been made. Refer to the Sample Design section in for detailed information about sample designs. Following is a quick description of each field in the tree sample design form: Meth: the method used to sample; choices are usually BAF Area Factor) or FRQ (frequency of fixed plot area) ExpFac: expansion factor; choices are the BAF or the inverse of the fixed area plot size. A “40” indicates a 40 BAG or a 1/40th acre fixed area plot Azm: starting azimuth; used for transects Cond: condition; linked to previous line with an AND or an OR clause SubFiltr: subpopulation filter; are the trees being sampled live, dead, down, or both live and dead Var.: variable; what part of the tree is being measured to see if it fits these criteria (DBH, height, etc.); in the Vegetation Composition tab this value is always set to CVR; in the Ground Surface tab this value is always set to SVC. Minv: minimum value of the variable; i.e., a minimum of 5.0 DBH MaxV: maximum value of the variable; i.e., a maximum of 999.9 DBH; in the Vegetation Composition and Ground Surface Cover tabs, this value is always set to 100%. Step 4.19 In the Down tab, select the Options button to select one of the four types of collection protocols. The collection protocols are: Brown’s Survey: to collect data according to Brown’s protocol Photo Series: to record tons/acre and volume/acre based on a collection of photographs Piece Count: to collect piece data on a fixed area plot Step 4.20 From the main menu bar, select Setup, then Planned Plot Calculator. Figure 49: ExamsPC drop-down menu Step 4.21 This screen will assist you in determining how many plots to install in order to meet a specified Sampling Error, given a known Coefficient of Variation. Figure 50: Planned Plot Calculator Enter the estimated Coefficient of Variation and desired Sampling Error values. Then click on the Compute button. The number of plots required to achieve the desired sampling error, given the estimated Coefficient of Variation, is displayed in the Planned Plots field.
Figure 48: Default Sample Design form Select Save once all choices have been made. Refer to the Sample Design section in for detailed information about sample designs. Following is a quick description of each field in the tree sample design form: Meth: the method used to sample; choices are usually BAF Area Factor) or FRQ (frequency of fixed plot area) ExpFac: expansion factor; choices are the BAF or the inverse of the fixed area plot size. A “40” indicates a 40 BAG or a 1/40th acre fixed area plot Azm: starting azimuth; used for transects Cond: condition; linked to previous line with an AND or an OR clause SubFiltr: subpopulation filter; are the trees being sampled live, dead, down, or both live and dead Var.: variable; what part of the tree is being measured to see if it fits these criteria (DBH, height, etc.); in the Vegetation Composition tab this value is always set to CVR; in the Ground Surface tab this value is always set to SVC. Minv: minimum value of the variable; i.e., a minimum of 5.0 DBH MaxV: maximum value of the variable; i.e., a maximum of 999.9 DBH; in the Vegetation Composition and Ground Surface Cover tabs, this value is always set to 100%. Step 4.19 In the Down tab, select the Options button to select one of the four types of collection protocols. The collection protocols are: Brown’s Survey: to collect data according to Brown’s protocol Photo Series: to record tons/acre and volume/acre based on a collection of photographs Piece Count: to collect piece data on a fixed area plot Step 4.20 From the main menu bar, select Setup, then Planned Plot Calculator. Figure 49: ExamsPC drop-down menu Step 4.21 This screen will assist you in determining how many plots to install in order to meet a specified Sampling Error, given a known Coefficient of Variation. Figure 50: Planned Plot Calculator Enter the estimated Coefficient of Variation and desired Sampling Error values. Then click on the Compute button. The number of plots required to achieve the desired sampling error, given the estimated Coefficient of Variation, is displayed in the Planned Plots field.
userguide_fsveg_ch3_install.docx