The Effect of Environmental Variables on Time of Inventory in Particular Sample Plots in Forest Teeroomrood (North of IRAN)

In implementing inventory design of forest many factors involving human force ,instruments, method, area and form of sample plat are fixed ; and sum other factors such as hindering bushes, average slope, ground's roughness, slipperiness, tree's number at sample plots are considered as variable factors. According to these parameters, the effect of them on measurement time on the tree's diameter and height, filling out the form and the time required for moving between sample plots at watershed 32 Teeroomrood of hyrcanian hard wood forest in north of iran were investigated. The results revealed that the average slops, tree's numbers and hindering bushes would influence on inventory time in sample plots. Approximately 651.97 seconds is required to complete inventory in sample plots: Moreover, the factors such as hindering bushes, average slops of direction, ground roughness and slipperiness, movement on contour lines with slope of more than 60% would influence on time of movement between sample plots. Approximately 310.41 seconds is required to travel each 100 meters between sample plots.