Cellular respiration. Cellular respiration is a process by which the simple sugar glucose is oxidized (combined with oxygen) to form the energy-rich compound adenosine triphosphate (ATP).
1 Progressive strip clear cut system: A silvicultural system in which, clear felling is done in the form of strips which progress successively in one direction across the regeneration area. 2  The crop produced is even-aged considering each strip as a compartment.lear felling system. The clear felling system is a silvicultural system in which equal or equiprodcutive areas of mature crop are successively clear-felled in one operation to be regenerated most frequently, artificially but sometimes naturally also.
Whether you are using a chain saw to cut firewood, trim trees or harvest large timber, you will be performing three basic operations: felling, limbing and bucking. Felling involves cutting a standing tree and dropping it in the place you want it.hen limbing a tree that is lying on the ground, other safety rules apply. The first thing you should do is evaluate the fallen tree. If the tree has become lodged or wedged in adjacent trees and has not fallen all the way to the ground, do not walk underneath the tree.