Errors in forest measuration with Angle gauge are analyzed in this paper based on the data from 414 plots of larch plantation.
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2. 本文探讨了角规测树法在测算毛竹林分蓄积量、标准株数、林分重量及单位面积株数中的应用。
Moreover, the application of angle-count cruising to calculating the stand volume, standard stock number, stand weight and stock number per unit area, is discussed.
By using observation data over 50 years, the paper systematically analyzed the relations of different stand density with diameter, height, crown of trees and so on.
The results are those: (1) the relations between each pair of forest measures and biomass are significant, however they are not obviously related to the cone biomass.
This research is the basic subsystem of forestry stereo vision system, which makes automatic tree size measure become reality to improve the efficiency and precision of the forestry measure work.
Focusing on overcome the shortcomings of routine angle gauge using in forest measuration, a new-type angle gauge with the function of correct slope automatically was developed.
Larch is a tree species that is widely and easily planted, so it is important for early management to study growth pattern of principal measurement factor in young-and middle-aged stands.
Once there, they use tape measures, callipers and a hand-held laser to measure the heights and girths of all the trees within a 500-square-metre plot.
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10. 受测者对景区内古树群落树木排列、光感、树木大小变异等景观要素反应值较高；
In old-forest stands, the test trees had higher feedback values to the landscape elements such as arrangement of trees, light perception, and variation of tree size.
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11. 受测者对景区内古树群落树木排列、光感、树木大小变异等景观要素反应值较高；
In old-forest stands, the test trees had higher feedback values to the landscape elements such as arrangement of trees, light perception, and variation of tree size.
