CN103411582A - Method for quickly measuring forest stand tree height by individual tree locating - Google Patents

Method for quickly measuring forest stand tree height by individual tree locating Download PDF

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Publication number
CN103411582A
CN103411582A CN2013103738253A CN201310373825A CN103411582A CN 103411582 A CN103411582 A CN 103411582A CN 2013103738253 A CN2013103738253 A CN 2013103738253A CN 201310373825 A CN201310373825 A CN 201310373825A CN 103411582 A CN103411582 A CN 103411582A
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Prior art keywords
measuring
tree
measuring object
height
angle
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CN2013103738253A
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Chinese (zh)
Inventor
惠刚盈
胡艳波
赵中华
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Research Institute of Forestry of Chinese Academy of Forestry
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Research Institute of Forestry of Chinese Academy of Forestry
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Priority to CN2013103738253A priority Critical patent/CN103411582A/en
Publication of CN103411582A publication Critical patent/CN103411582A/en
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Abstract

The invention discloses a method for quickly measuring the forest stand tree height by individual tree locating. The method comprises the following steps: firstly obtaining coordinates of each individual tree in a forest through the inspection of a locating instrument; then finding out an individual tree with a measuring object which can be completely seen as a measuring point, measuring an angle of elevation from the measuring point to the highest point of the measuring object and an angle of depression or angle of elevation from the measuring point to the lowest point of the measuring object, calculating the horizontal distance of two trees according to the coordinates, and calculating the tree height of the measuring object by utilizing a triangle function. On the basis of known locating data of the individual trees, the tree height is measured without re-measuring the horizontal distance, and at most two angles are required to be measured during the actual inspection, so that the difficulty of the inspection is greatly reduced.

Description

The method for fast measuring of every wood location standing forest height of tree
Technical field
The present invention relates to a kind of measuring method of the standing forest height of tree, relate in particular to the method for fast measuring of a kind of every wood location standing forest height of tree.
Background technology
During the forestry field operation was measured, the measurement of the height of tree was important, a loaded down with trivial details large problem always.Traditional height of tree measuring method comprises visual estimation and use altimeter device, and the former measurement result is too subjective, is empirical value fully, and error is difficult to estimation, and the latter needs to measure horizontal range in measurement, therefore take time and effort.The altimeter device that many advanced persons also occurred in the market, but its price is all very expensive.
Summary of the invention
The purpose of this invention is to provide a kind of simple, practical every wood and locate the method for fast measuring of the standing forest height of tree.
The objective of the invention is to be achieved through the following technical solutions:
The method for fast measuring of every wood of the present invention location standing forest height of tree comprises step:
At first, with the location instrument investigation, obtain the coordinate of each strain Dan Mu in woods;
Then, look for a strain can be complete see that single carpentery workshop of measuring object is measuring point, measure the elevation angle from this to the measuring object peak and the angle of depression or the elevation angle of minimum point, according to coordinate, calculate the horizontal range of two strains trees, utilize trigonometric function to ask the height of tree of calculating measuring object.
As seen from the above technical solution provided by the invention, every wood that the embodiment of the present invention provides is located the method for fast measuring of the standing forest height of tree, at first with the location instrument investigation, obtains the coordinate of each strain Dan Mu in woods; Then look for a strain completely to see that single carpentery workshop of measuring object is measuring point, the elevation angle of measurement from this to the measuring object peak and the angle of depression or the elevation angle of minimum point, according to coordinate, calculate the horizontal range of two strain trees, utilize trigonometric function to ask the height of tree of calculating measuring object, on the basis of known every wooden locator data, the height of tree is measured no longer needs to remeasure horizontal range, during factual survey, at most only need to measure two angles, the difficulty of investigation reduces greatly like this.
The accompanying drawing explanation
Every wood that Fig. 1 a provides for the embodiment of the present invention one is located the schematic diagram of the method for fast measuring of the standing forest height of tree;
Every wood that Fig. 1 b provides for the embodiment of the present invention two is located the schematic diagram of the method for fast measuring of the standing forest height of tree.
Embodiment
Below will be described in further detail the embodiment of the present invention.
The method for fast measuring of every wood location of the present invention standing forest height of tree, its preferably embodiment be:
Comprise step:
At first, with the location instrument investigation, obtain the coordinate of each strain Dan Mu in woods;
Then, look for a strain can be complete see that single carpentery workshop of measuring object is measuring point, measure the elevation angle from this to the measuring object peak and the angle of depression or the elevation angle of minimum point, according to coordinate, calculate the horizontal range of two strains trees, utilize trigonometric function to ask the height of tree of calculating measuring object.
Comprise following arbitrary formula:
When the tree root of measuring object when sight line is following: h = ( x - x i ) 2 + ( y - y i ) 2 · ( tgα + tgβ ) Formula one;
When the measuring object tree root when sight line is above: h = ( x - x i ) 2 + ( y - y i ) 2 · ( tgα - tgβ ) Formula two;
In formula:
H: the height of tree of measuring object;
X, y: measuring object coordinate;
X i, y i: the measuring point coordinate;
The treetop sight line of α: measuring point---measuring object and the angle of surface level;
The tree root sight line of β: measuring point---measuring object and the angle of surface level.
When the tree root of two strain trees was in the same gradient, formula one was reduced to:
h = ( x - x i ) 2 + ( y - y i ) 2 · tgα + h eye ;
In formula:
H eye: human eye is apart from the height on ground.
Along with scientific and technical progress and universal, multiple location instrument is applied in the forestry field study, and the forest horizontal location on certain area is not a problem.The present invention, on the basis of every wooden horizontal location data, realizes the measurement to the height of tree.
The principle that the height of tree of the present invention is measured is:
The coordinate of each strain Dan Mu in known woods, look for a strain completely to see that single carpentery workshop of measuring object is measuring point, the elevation angle of measurement from this to the measuring object peak and the angle of depression of minimum point, calculate both horizontal range according to coordinate, utilize trigonometric function to ask the height of tree of calculating measuring object.
According to the gradient relation of measuring object and measuring point, being divided into is 2 kinds of situations:
1. as shown in Figure 1a, the measuring object tree root is below sight line;
2. as shown in Figure 1 b, the measuring object tree root is more than sight line.
In figure:
H: the height of tree of measuring object;
X, y: measuring object coordinate;
X i, y i: the measuring point coordinate;
α: measuring point---the angle of treetop sight line and surface level;
β: measuring point---the angle of tree root sight line and surface level.
In Fig. 1 a, the height of tree is:
Figure BDA0000371455220000031
In Fig. 1 b, the height of tree is:
Figure BDA0000371455220000032
In the situation of Fig. 1 a, if two strains trees all are on the same gradient, now do not need to measure the β angle, only human eye need be added and gets final product to the distance h eye on ground.Formula (1) is reduced to:
Figure BDA0000371455220000033
Application the present invention, on the basis of known every wooden locator data, the height of tree is measured no longer needs to remeasure horizontal range, during factual survey, at most only needs to measure two angles, and the difficulty of investigation reduces greatly like this.
The above; only be the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.

Claims (3)

1. the method for fast measuring of every wood location standing forest height of tree, is characterized in that, comprises step:
At first, with the location instrument investigation, obtain the coordinate of each strain Dan Mu in woods;
Then, look for a strain can be complete see that single carpentery workshop of measuring object is measuring point, measure the elevation angle from this to the measuring object peak and the angle of depression or the elevation angle of minimum point, according to coordinate, calculate the horizontal range of two strains trees, utilize trigonometric function to ask the height of tree of calculating measuring object.
2. the method for fast measuring of every wood according to claim 1 location standing forest height of tree, is characterized in that, comprises following arbitrary formula:
When the tree root of measuring object when sight line is following: h = ( x - x i ) 2 + ( y - y i ) 2 · ( tgα + tgβ ) Formula one;
When the measuring object tree root when sight line is above: h = ( x - x i ) 2 + ( y - y i ) 2 · ( tgα - tgβ ) Formula two;
In formula:
H: the height of tree of measuring object;
X, y: measuring object coordinate;
X i, y i: the measuring point coordinate;
The treetop sight line of α: measuring point---measuring object and the angle of surface level;
The tree root sight line of β: measuring point---measuring object and the angle of surface level.
3. the method for fast measuring of every wood according to claim 2 location standing forest height of tree, is characterized in that, when the tree root of two strain trees was in the same gradient, formula one was reduced to:
h = ( x - x i ) 2 + ( y - y i ) 2 · tgα + h eye ;
In formula:
H eye: human eye is apart from the height on ground.
CN2013103738253A 2013-08-23 2013-08-23 Method for quickly measuring forest stand tree height by individual tree locating Pending CN103411582A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571561A (en) * 2015-12-15 2016-05-11 浙江农林大学 Method and device for collecting stumpage information
CN105758376A (en) * 2016-05-25 2016-07-13 中铁上海设计院集团有限公司 Remote elevation measuring method based on similar triangles
CN109470202A (en) * 2018-10-25 2019-03-15 北京市天元网络技术股份有限公司 A kind of base station height measurement method and system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1699922A (en) * 2005-06-21 2005-11-23 云南林业职业技术学院 Method and device for measuring spatial parameters of forest

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1699922A (en) * 2005-06-21 2005-11-23 云南林业职业技术学院 Method and device for measuring spatial parameters of forest

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
冯仲科等: "三维前方交会法测量树高及其精度分析", 《北京林业大学学报》 *
景海涛等: "基于全站仪和GIS技术的林业定位信息研究与应用", 《北京林业大学学报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571561A (en) * 2015-12-15 2016-05-11 浙江农林大学 Method and device for collecting stumpage information
CN105758376A (en) * 2016-05-25 2016-07-13 中铁上海设计院集团有限公司 Remote elevation measuring method based on similar triangles
CN105758376B (en) * 2016-05-25 2018-02-16 中铁上海设计院集团有限公司 Suspension surveying method based on similar triangles
CN109470202A (en) * 2018-10-25 2019-03-15 北京市天元网络技术股份有限公司 A kind of base station height measurement method and system

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Application publication date: 20131127