Method for utilizing angle gauge to measure forest stand crown density
A canopy density and forest stand technology, applied in the field of forest resources survey, can solve the problems of extensive calculation methods, vague concepts, and high cost of introduction, and achieve the effects of simple and easy field operation, improved calculation accuracy, and reduced workload.
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[0019] The method of measuring forest stand canopy closure with angle gauge is different from the existing method, and it has been greatly improved. Specifically: using angle gauge as a tool, adopting angle gauge counting survey method, and measuring the diameter at breast height of each counting tree to obtain per hectare To calculate the number of plants per hectare in the forest stand N i , Find the crown amplitude Cw corresponding to each diameter step i from the established one-element diameter crown table i , There are K diameter steps, then the sum of the crown widths of the trees of each diameter step will get the sum of the crown widths per hectare of the measured forest stand Let P be the forest stand canopy closure, then through the numerical simulation The canopy density of the forest stand in the survey area can be known. The specific implementation is as follows:
[0020] 1. When using the angle gauge to determine the forest stand canopy closure for the first time,...
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