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  felling operation
    With three accidents in felling operation of forest industry enterprises taken as examples,the causes of the above-mentioned accidents are analyzed,based on which preventive measures against the happening of relevant accidents are presented.
    以森工企业伐木作业三起事故为案例,对造成事故的原因进行了分析,根据事故成因提出了相对应的事故预防措施。
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  felling operation
The results of test survey and data analysis showed that the tree-felling operation efficiency was influenced by cold weather, properly decreased 18.5% in average.
      
Uncontrolled falling of an adjacent tree or tree branches as a result of felling operation.
      
  logging operation
Burrowing amphibian species may be of less concern as they may be able to escape the direct impacts of a logging operation.
      
We then examine the extent of soil disturbance in a standard operation in a simple field experiment to assess the potential for a logging operation to affect H.
      
Approximately 65% of a coupe experiences medium to high levels of soil disturbance during an integrated logging operation.
      
Active management of an area following a logging operation may improve the habitat for H.
      
Because over 90 m of hole fill had been encountered by the logging operation, considerable caution was used on the return to total depth.
      
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  logging practice
Clear-cutting--A logging practice in which a ma jority of the trees in an area are cut.
      
There is a National Code of Logging Practice, and there is a move towards sustainable forest management.
      
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