Method for determining wood ages by adopting model method

A model method and tree technology, applied in the field of tree age prediction, can solve problems such as damage to trees, and achieve the effect of less workload and high prediction efficiency

Inactive Publication Date: 2016-07-27
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
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Problems solved by technology

[0002] So far, the methods of tree age prediction mainly adopt the method of growth cone or felling, etc. Although this method is widely used, in the actual operation process, there are a lot of defects that damage trees:

Method used

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Embodiment Construction

[0010] The method for determining the age of forest trees by model method is different from the prior art, and has been greatly improved, specifically:

[0011] 1) The operation of a method for determining the age of forest trees by model method: first, select the natural heterogeneous forest forest sub-compartment composed of the same tree species as the object; secondly, mark the trees in the sub-compartment from young to large according to the diameter order , recorded as 1, 2, 3...n; then, from the first year to the kth year, observe the tree diameter value of each diameter step marked before successive years, and record it as: d in the first year 11 , d 21 , d 31 … d n1 , the second year is recorded as: D 12 , d 22 , d 32 … d n2 , the k-th year is recorded as: d 1k , d 2k , d 3k … d nk ;Finally, the age of the tree is obtained through the formula operation.

[0012] 2) The solution method of the model method to determine the tree age parameter:

[0013] ①Estab...

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Abstract

The invention discloses a method for determining wood ages by adopting a model method. The method adopts the mathematic model method to predict the wood ages for a natural different-age-wood forest class consisting of the same tree species and comprises the steps that firstly, woods in the small class are sequentially marked from young trees according to diameter class from small to large; secondly, a mathematic model of the natural forest class consisting of the same tree species is established according to wood diameters at breast heights of all diameter classes marked before observation in successive years; finally, the ages of the woods are calculated through substitution by combining a parameter expression. The method does not need wood felling, does not damage the woods and is small in working amount and easy to operate.

Description

1. Technical field [0001] The invention relates to a method for predicting the age of forest trees, in particular to a method using a mathematical model without using growth cones or felling methods and without damaging trees. 2. Technical background [0002] So far, the methods of tree age prediction mainly adopt the method of growth cone or felling, etc. Although this method is widely used, in the actual operation process, there are a lot of defects that damage trees: 3. Contents of the invention [0003] In order to overcome a lot of troubles inevitably brought in the existing tree age prediction process, the purpose of the present invention is to provide a kind of using mathematical model, needn't adopt the mode of growth cone or fall down, the forest tree age prediction method that does not damage trees. [0004] The purpose of the present invention is achieved like this: [0005] 1, a kind of method of model method measuring tree age is characterized in that: this m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 冯仲科马力邱梓轩
Owner BEIJING FORESTRY UNIVERSITY
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