Forest measurement angulometer and application method thereof

Abstract

The invention discloses a forest measurement angulometer and an application method thereof. The forest measurement angulometer consists of a transparent narrow scale and a yardstick. During observation, a rope end is held in front of eyes with one hand, the scale body is held with the other hand, and counting is performed according to the relations of tangency, intercrossing and clearance between visual lines on both sides of the yardstick and a target tree crown breadth. Two functions are realized: (1) mathematical modeling is determined by measuring the ground diameter, crown breadth, height and biomass of each counted tree, and the total biomass of a sample land is computed by using a mathematical model; (2) measurement of the canopy density of spherical vegetation is realized through the mathematical model by measuring the crown breadth of the spherical vegetation and counting according to the rule. By adopting the method, the measuring efficiency and accuracy of the shrub biomass and canopy density are increased greatly, and the defects of great damage in the conventional destructive measuring method with high accuracy as well as low accuracy in a non-destructive measuring method with no damage are overcome.

Description

1. Technical field [0001] The invention relates to a method for measuring shrub biomass and canopy density of spherical vegetation, in particular using a tree measuring angler and its application method. 2. Technical Background [0002] Traditional shrub biomass measurement techniques are backward, and two types of methods are often used: one type is the destructive method, which has high precision but is very destructive, and needs to harvest the whole shrub in the sample plot; the other type is the destructive method. It is a non-destructive method, which is non-destructive but has low precision. These methods are far from meeting the monitoring needs of shrub resources and ecological environment. Therefore, in the monitoring of shrub resources, the traditional biomass acquisition method is limited by the complex terrain factors in the forest, which makes the acquisition of these data heavy workload and low accuracy. A problem to be solved urgently by those skilled in th...

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Problems solved by technology

[0004] In order to overcome the shortcomings of the traditional methods, which are relatively simple and high-precision in the measurement of damage methods, and the non-destructive methods do not need to be felled but have low precision, improve the efficiency and accuracy of shrub biomass measurement, and realize low-damage and high-precision measurement of shrub biomass. , the present invention provides a kind of measuring method based on the new shrub measuring instrument as the shrub biomass of tool, it is characterized in that: design a kind of novel shrub measuring instrument, count the shrubs in the plot by the shrub measuring instrument. Counting, modeling by measuring parameters such as ground diameter, crown width, shrub height and biomass of each counting tree, and calculating the total biomass of the sample plot through the model

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