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Title 190-Forestry Inventory Methods Technical Note <br />Strips are often used in tropical forests where there is such a dense understory that point <br />sampling is limited by visibility. <br />These designs may also be useful in areas with strong environmental gradients, usually due to <br />steep slopes, where they are oriented perpendiculuar to the slope. See figure 8 for an example of <br />a strip sampling design. <br />Figure 8: Example Strip Sampling Layout <br />- Strip 1 Strip 2 Strip 3 Strip 4 Strip 5 <br />Tree Planting Inventory <br />Many factors can affect the postplanting success of tree and shrub establishment projects. <br />Negative factors may include adverse weather conditions or livestock trampling, or other biotic <br />and abiotic causes of mortality. <br />Regular inspections of tree planting sites or direct seeding sites are necessary to identify the <br />many factors affecting survival and growth. Inspections help determine whether there are needs <br />for replanting; additional weed control; moisture management; protection from deer, rabbits, or <br />other herbivores; management of insect or disease problems; etc. <br />It is important to note that factors such as improper seedling shipping, handling, onsite storage, <br />or planting procedures are elements of the actual tree planting project. <br />• These issues must be addressed in a properly designed job sheet, combined with the <br />oversight of an experienced tree planting supervisor during the time of planting. <br />• These causes for failure are not the same as the ones that are the focus of tree planting <br />inventories. <br />• The methods described in this section can be used to evaluate most newly planted tree <br />and shrub establishment practices and very young plantations. <br />Timing for Inspections <br />(Technical Note No. 190-FOR-01, Jul 2018) <br />14 <br />