繁忙
发表于 2025-3-23 10:37:26
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做作
发表于 2025-3-23 17:53:52
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nepotism
发表于 2025-3-23 18:03:25
Sampling with Circular Plots,In forest inventory, circular sample plots are used frequently, because they can be laid out easily. Moreover, the ratio circumference/area is minimal for circles, which implies a minimum number of (doubtful) border trees.
场所
发表于 2025-3-23 22:23:38
Continuous Forest Inventory with Partial Replacement of Sample Plots,sive operations no longer are economically justified. On the other hand, complete periodic remeasurement of for instance extensive forest areas in the tropics is practically impossible. Consequently, modern continuous forest inventories are based on methods in which . are measured periodically, say
尖
发表于 2025-3-24 05:26:22
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我们的面粉
发表于 2025-3-24 09:05:21
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盲信者
发表于 2025-3-24 13:04:32
Line Intersect Sampling, on clearfelled areas. These authors were faced with the problem of annually assessing, with limited manpower, the quantity of merchantable material not extracted by pulpwood contractors, from clearfellings in . stands in New Zealand. Though the contractors were liable for payment of royalties regar
合乎习俗
发表于 2025-3-24 17:50:33
List Sampling,units are selected with probabilities proportional to the magnitude (= size) of an element’s individual characteristic (whatever the latter may be) but the selection technique differs from those used in point- and line intersect sampling. In order to be able to draw a list sample, we first need a Zi
Pde5-Inhibitors
发表于 2025-3-24 21:32:00
3-P Sampling,hat an element of a population will be included in the sample, is .. observable on an element. . elements of the population (f.i. the stems in a forest stand) are considered in succession as to whether they will be included in the sample or not. Only after it has been decided (on the basis of x.) th
Aggrandize
发表于 2025-3-25 01:50:11
Continuous Forest Inventory with Partial Replacement of Sample Plots, tropics is practically impossible. Consequently, modern continuous forest inventories are based on methods in which . are measured periodically, say every 3 to 10 years. The size of the plots generally is in the range of 500 to 1000 m., the sampling intensity being of the order of 0.1%.