A method for direct measurement of forest stand volume by mobile phone
A mobile phone and volume technology, which is applied to measurement devices, instruments, optical devices, etc., can solve the problems of time-consuming, labor-intensive, large uncertainty, and low efficiency of the whole forest measurement method, and achieves reduction of observation time, short measurement period, and low efficiency. The effect of small internal workload
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[0040] The method of measuring forest stand volume based on mobile phones is different from the existing methods and has been greatly improved. Specifically: using an ordinary mobile phone as a tool, install a software with tree measuring function in the mobile phone, and set the opening angle θ of the tree measuring software to 1°08′45″. Use this opening angle to aim at the diameter at breast height of the tree, and from the sample Measure 360° around the point, and observe the height of the trunk at the trunk tangent to the trunk above the chest height, expressed with h. The method for calculating the stand volume is as follows: the volume per hectare (M) is equal to the height of each tree observed on the forest floor The sum of the heights of all tree trunks from the ground (in m), namely:
[0041] The specific implementation is as follows:
[0042] 1. Install the tree measuring software in the ordinary mobile phone. The functions of the software include setting the ope...
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