CN101349553A - Method for measuring tree mixing degree by common compass or theodolite - Google Patents

Abstract

The invention discloses a process for measuring the forest mingled degree by a common compass or a theodolite, which comprises measuring the tree species proportion and angular relationship of n nearest adjacent trees of a reference tree I through the method of observation set by means of utilizing the horizontal angle measuring function of the common compass or a total station, conducting data record, storage and processing by a PDA, real-timely obtaining the mingled degree and angle scale of the reference tree i, respectively obtaining average values to the sum of mingled degrees and the sum of the uniform angle indexes of reference trees in a standing forest, obtaining the average mingled degree and the angle scale of the standing forest, and realizing all record, storage and calculation processing work of data by the programming of the PDA.

Description

A kind of common compass or transit survey forest mix friendship degree method

One, technical field

The present invention relates to a kind of method that forest mixes the friendship degree of measuring, particularly a kind of common compass or transit survey forest mix the method for friendship degree.

Two, technical background

For the research of vegetation structure, mainly concentrate on the composition of describing group and space distribution, group's layering, age composition, biomass distribution etc. in the tradition forestry.Along with world's forestry by the transformation of traditional forestry to Modern Forestry, details such as the structure of forest, process and many relations more and more become the prerequisite of orest management, and the standing forest space structure that wherein relates to spatial relationship between the Dan Mu more and more is subject to people's attention.The standing forest space structure is meant Distribution Pattern and attribute spatially the arrangement mode thereof of forest on the forest land, just spatial relationships such as seeds, size, distribution between the forest.The standing forest space structure has determined competition gesture and the spatial niche thereof between the trees, and it has determined the stability of standing forest, the possibility and the operation space size of development to a great extent.Analyze and rebuild the important foundation that the standing forest space structure is a development standing forest growth model of new generation, it also is the prerequisite of formulating the orest management programme, therefore in recent years the research of standing forest space structure is received much attention, proposed the parameter that mixed friendship degree, uniform angle etc. are described the standing forest space structures.And all also be in the rough stage of low precision such as visual estimation measurement for the measurement that mixes friendship degree, uniform angle, common compass that the present invention proposes or transit survey forest mix the method for friendship degree, standing forest be can accurately measure and friendship degree and uniform angle mixed, utilize PDA to realize automatic record, storage and the processing of field data collection, save time, improve operating efficiency.

Three, Fa Ming content

In order to overcome the low precision shortcoming of the mixed friendship degree of present stage forest, uniform angle measurement, the purpose of this invention is to provide the method that a kind of common compass or transit survey forest mix the friendship degree, realize that accurately measuring standing forest mixes friendship degree and uniform angle, utilize PDA to realize automatic record, storage and the processing of field data collection, save time, improve operating efficiency.

The object of the present invention is achieved like this:

1. common compass or transit survey forest mix friendship degree method, utilize the function of the survey horizontal angle of common compass or total powerstation, measure the seeds ratio and the angular relationship of the n strain nearest neighbor wood of reference tree i by the survey time method, carry out record, storage and the processing of data with PDA, obtain mixed friendship degree and uniform angle with reference to tree i, by to all mixed friendship degree with reference to tree in the standing forest and and uniform angle with average respectively, obtain the average friendship degree and the uniform angle of mixing of standing forest.

2. the method for the mixed friendship degree of common compass or transit survey forest is as follows: to be initial point with reference to tree, observe with reference to the n strain nearest neighbor wood of setting i, if same seeds with box compass or transit, then count 1, if not same seeds, then count 0, add up the counting wooden sum Z; At last, will count wooden sum Z and n substitution digital-to-analogue 1. $M_i=\frac{Z}{n}$ Try to achieve i mixed friendship degree in the mixed forest, then 2. according to digital-to-analogue with reference to tree $\stackrel{\‾}{M}=\frac{1}{N}\underset{1}{\overset{N}{\mathrm{\Σ}}}{M}_i$ Try to achieve the average friendship degree that mixes of standing forest, wherein N is all forest strain trees in the standing forest, M _iBe i mixed friendship degree, all write down evaluation work and realize by the PDA programming with reference to tree.

3. the method for common compass or transit survey standing forest uniform angle is as follows: to be initial point with reference to tree, with the angle α of the adjacent wood of per two strains in the n strain nearest neighbor wood of box compass or transit observation reference tree i, if α is less than average angle α ₀, then count 1, if α is greater than average angle α ₀, then count 0, wherein

Add up counting sum K; At last, will count sum K and n substitution digital-to-analogue 1. $W_i=\frac{K}{n}$ Try to achieve i uniform angle in the mixed forest, then 2. according to digital-to-analogue with reference to tree $\stackrel{\‾}{W}=\frac{1}{N}\underset{1}{\overset{N}{\mathrm{\Σ}}}{W}_i$ Try to achieve the average angle yardstick of standing forest, wherein N is all forest strain trees in the standing forest, W _iBe i uniform angle, all write down evaluation work and realize by the PDA programming with reference to tree.

This invention is compared with existing method and is had the following advantages:

(1) standing forest be can accurately measure and friendship degree and uniform angle mixed,

(2) time has been saved in automatic record, storage and the processing of field data collection, improves operating efficiency.

Four, description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is that common compass or transit survey forest mix friendship degree synoptic diagram;

Fig. 2 is for mixing the value and the implication synoptic diagram thereof of friendship degree and uniform angle;

Five, embodiment:

The method that common compass or transit survey forest mix the friendship degree unlike the prior art, specifically:

1. common compass or transit survey forest mix friendship degree method, utilize the function of the survey horizontal angle of common compass or total powerstation, measure the seeds ratio and the angular relationship of the n strain nearest neighbor wood of reference tree i by the survey time method, carry out record, storage and the processing of data with PDA, obtain mixed friendship degree and uniform angle with reference to tree i, by to all mixed friendship degree with reference to tree in the standing forest and and uniform angle with average respectively, obtain the average friendship degree and the uniform angle of mixing of standing forest.

2. the method for the mixed friendship degree of common compass or transit survey forest is as follows: selecting the good position of a sighting condition as initial point near the place of reference tree i, settle box compass or transit, the centering leveling, n strain nearest neighbor wood with box compass or transit observation reference tree i, if same seeds then count 1, if not same seeds, then count 0, add up the counting wooden sum Z; At last, will count wooden sum Z and n substitution digital-to-analogue 1. $M_i=\frac{Z}{n}$ Try to achieve i mixed friendship degree in the mixed forest, then 2. according to digital-to-analogue with reference to tree $\stackrel{\‾}{M}=\frac{1}{N}\underset{1}{\overset{N}{\mathrm{\Σ}}}{M}_i$ Try to achieve the average friendship degree that mixes of standing forest, wherein N is all forest strain trees in the standing forest, M _iBe i mixed friendship degree, all write down evaluation work and realize by the PDA programming with reference to tree.

3. the method for common compass or transit survey standing forest uniform angle is as follows: selecting the good position of a sighting condition as initial point near the place of reference tree i, settle box compass or transit, the centering leveling, with the angle α of the adjacent wood of per two strains in the n strain nearest neighbor wood of box compass or transit observation reference tree i, if α is less than average angle α ₀, then count 1, if α is greater than average angle α ₀, then count 0, wherein

Add up counting sum K; At last, will count sum K and n substitution digital-to-analogue 1. $W_i=\frac{K}{n}$ Try to achieve i uniform angle in the mixed forest, then 2. according to digital-to-analogue with reference to tree $\stackrel{\‾}{W}=\frac{1}{N}\underset{1}{\overset{N}{\mathrm{\Σ}}}{W}_i$ Try to achieve the average angle yardstick of standing forest, wherein N is all forest strain trees in the standing forest, W _iBe i uniform angle, all write down evaluation work and realize by the PDA programming with reference to tree.

Claims (3)

1. common compass or transit survey forest mix friendship degree method: it is characterized in that: the function of utilizing the survey horizontal angle of common compass or total powerstation, measure the seeds ratio and the angular relationship of the n strain nearest neighbor wood of reference tree i by the survey time method, carry out record, storage and the processing of data with PDA, obtain mixed friendship degree and uniform angle with reference to tree i, by to all mixed friendship degree with reference to tree in the standing forest and and uniform angle with average respectively, obtain the average friendship degree and the uniform angle of mixing of standing forest.

2. common compass according to claim 1 or transit survey forest mix friendship degree method, it is characterized in that: the method for wherein measuring the mixed friendship degree of forest is as follows: with the reference tree is initial point, n strain nearest neighbor wood with box compass or transit observation reference tree i, if same seeds, then count 1, if not same seeds, then count 0, add up the counting wooden sum Z; At last, will count wooden sum Z and n substitution digital-to-analogue 1. $M_i=\frac{Z}{n}$ Try to achieve i mixed friendship degree in the mixed forest, then 2. according to digital-to-analogue with reference to tree $\stackrel{\‾}{M}=\frac{1}{N}\underset{1}{\overset{N}{\mathrm{\Σ}}}{M}_i$ Try to achieve the average friendship degree that mixes of standing forest, wherein N is all forest strain trees in the standing forest, M _iBe i mixed friendship degree, all write down evaluation work and realize by the PDA programming with reference to tree.

3. common compass according to claim 1 or transit survey forest mix friendship degree method, it is characterized in that: the method for wherein measuring the standing forest uniform angle is as follows: with the reference tree is initial point, with the angle α of the adjacent wood of per two strains in the n strain nearest neighbor wood of box compass or transit observation reference tree i, if α is less than average angle α ₀, then count 1, if α is greater than average angle α ₀, then count 0, wherein

Add up counting sum K; At last, will count sum K and n substitution digital-to-analogue 1. $W_i=\frac{K}{n}$ Try to achieve i uniform angle in the mixed forest, then 2. according to digital-to-analogue with reference to tree $\stackrel{\‾}{W}=\frac{1}{N}\underset{1}{\overset{N}{\mathrm{\Σ}}}{W}_i$ Try to achieve the average angle yardstick of standing forest, wherein N is all forest strain trees in the standing forest, W _iBe i uniform angle, all write down evaluation work and realize by the PDA programming with reference to tree.

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