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Precise selective cutting operation method for natural over-matured forests based on canopy competition

A natural and over-mature technology, applied in the direction of instruments, data processing applications, forecasting, etc., can solve the problems of complicated technology, low efficiency, low precision, etc., and achieve the effect of simple calculation, small workload and high precision

Inactive Publication Date: 2018-07-31
BEIJING FORESTRY UNIVERSITY
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of low precision, low efficiency and complicated techniques of traditional natural mature forest selective felling management method, the present invention provides a selective felling management method of natural mature mature forest based on canopy competition by using GPS positioning

Method used

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Effect test

Embodiment Construction

[0014] Compared with the original selective cutting management method, a precise selective cutting management method based on canopy competition in natural mature forests has made great improvements and innovations in operation methods and calculations, specifically:

[0015] (1) In the forest stands far from the edge of the forest, select a fixed square sample plot with evenly distributed and representative dominant tree species, and its area S is generally 666.67m 2 , Use GPS to locate the center of the fixed sample plot and the four boundary points, with red stained markings at breast diameter of the angle wood;

[0016] (2) According to the binary volume table established by 56 main tree species in my country, V=ad b H C (a, b, c are the known binary volume coefficients respectively); in the selected sample plot, select a certain time point to observe and record, and record the number of the counting tree as i (i = 1, 2, ..., n 0 ), tree species is j (j = 1, 2,..., 56), diameter ...

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Abstract

The invention discloses a precise selective cutting operation method for natural over-matured forests based on canopy competition. According to the technology, firstly a representative square sample plot with the uniform distribution of dominant tree species is selected in a forest stand far from a forest edge, then GPS is used at the center point and four boundary points of the fixed plot, positions of diameters at breast heights of corner woods are dyed with red lines; in the selected sample plot, a certain time point is selected to observe and record wood numbers, tree species, breast diameters, tree heights and crown diameters, in the same way, wood numbers, tree species, breast diameters, tree heights and crown diameters are observed and recorded at the same time point in a second year, finally the total annual growth amount, the number of cut trees and the number of replanting of the fixed plot are calculated by using formulas.

Description

1. Technical Field [0001] The invention relates to a precise selective cutting management method based on natural over-mature forests under canopy competition, in particular to a precise selective cutting management method obtained by GPS positioning, markings at breast diameter and application of mathematical formulas. 2. Technical background [0002] Traditional forest selective cutting management lacks correct understanding and application of selective cutting theory, lack of systematic research, lack of positioning research, extensive selective cutting operations, imperfect model establishment and other problems, which make selective cutting efficiency low. In recent years, with the research of GPS precise positioning, its application in forestry has begun to develop rapidly. Using GPS positioning to measure the selective cutting management method of natural over-mature forest based on canopy competition makes it simple, convenient, time-saving and labor-saving. The present i...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/02
CPCG06Q10/04G06Q50/02
Inventor 冯仲科邱梓轩郭佳琪
Owner BEIJING FORESTRY UNIVERSITY