CN104089609A - Method for measuring crown height and crown breadth of stumpage - Google Patents
Method for measuring crown height and crown breadth of stumpage Download PDFInfo
- Publication number
- CN104089609A CN104089609A CN201410332337.2A CN201410332337A CN104089609A CN 104089609 A CN104089609 A CN 104089609A CN 201410332337 A CN201410332337 A CN 201410332337A CN 104089609 A CN104089609 A CN 104089609A
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- CN
- China
- Prior art keywords
- crown
- tree
- stumpage
- tan
- measuring
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a method for measuring the crown height and the crown breadth of stumpage. The method comprises the following steps: firstly, measuring a slope distance, an inclination angle and a magnetic azimuth between each of instruments to the breast diameter of the stumpage by using a distance measuring instrument and a compass instrument; secondly, enabling the central position of each of the instruments to be fixed, sequentially aiming at the crown underneath and the treetop of the stumpage so as to obtain inclination angles during the two-time aiming at; then, sequentially aiming at the leftmost side and the rightmost side of the tree crown so as to respectively obtain magnetic azimuths during the two-time aiming at; finally, calculating the crown height value and the crown breadth value of the stumpage by using a trigonometric function relationship according to obtained basic data.
Description
One, technical field
The present invention relates to a kind of crown height and hat width measuring method of tree crown, particularly a kind of standing tree crown height hat width measuring method.
Two, technical background
The crown height of tree crown and hat width measuring method can be divided into two classes by metering system: a class is traditional tree surveying method; One class is to use surveying instrument to measure.Along with the continuous progress and development of China's science and technology, the emerging in large numbers of various surveying instruments, for huge contribution has been made in Forestry survey work.The introducing of instrument of surveying and mapping has not only improved the speed measuring, and the more important thing is and has improved measurement accuracy.But in field operation actual mechanical process, there are the following problems for the crown height of tree crown and hat width computation at present:
1. field operation is measured crown height and the hat width of tree crown, at least needs two people to coordinate.
2., while measuring hat width under tree, be not easy to determine tree crown vertical projection maximum gauge measurement point.
3. trees are non-sealing, transparent object, and existing method is difficult to extract surface point data from the cloud data of three-dimensional laser scanner.In addition, although cloud data precision is high, data volume is large, and the processing time is long and step is complicated.
4. time with a varied topography, tape measure uses inconvenient under tree.
Therefore, in measuring the crown height of tree crown and being preced with width process, adopt existing measuring method inevitably to bring a lot of operations inconvenience and processed the problems such as complicated.
Three, summary of the invention
Operate inconvenience and process the problems such as complexity in measuring the crown height of tree crown and being preced with width process in order to overcome existing measuring method, the object of this invention is to provide a kind of standing tree crown height and be preced with width measuring instrument and using method thereof.
The object of the present invention is achieved like this:
First, settle stadimeter, surveying instrument is to the oblique distance L of the standing tree diameter of a cross-section of a tree trunk 1.3 meters above the ground to be measured; Secondly, settle box compass at same position, surveying instrument is to the vertical angle of inclination beta at the standing tree diameter of a cross-section of a tree trunk 1.3 meters above the ground to be measured place
1.3with magnetic azimuth α
1.3; Again, keep box compass position motionless, aim at successively the lower B of standing tree to be measured hat and treetop C, and angle of inclination beta while obtaining twice aiming respectively
dand β
u; Then, keep centre position motionless, aim at successively tree crown leftmost side edge D and edge, rightmost side E, and magnetic azimuth α while obtaining twice aiming respectively
land α
r; Finally, according to above-mentioned measurement the data obtained, utilize digital-to-analogue 1.
H=Lcos β
1.3[tan β
u-tan β
d] calculate the crown height h of tree crown, utilize digital-to-analogue 2.
P=Lcos β
1.3[tan| α
1.3-α
l|+tan| α
r-α
1.3|] calculate the hat width P of standing tree.
This invention has the following advantages:
1. a people can complete surveying work, without complicated operation and computation process, has improved work efficiency;
2. do not need the lower measurement of tree, solved by side rail and be not easy the problem with tape measuring;
3. measured crown height and the hat width of tree crown outward by side rail, reducing the difficulty of identification tree crown maximum gauge edge point.
Four, brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is standing tree crown height hat width measuring method schematic diagram;
Five, embodiment:
Standing tree crown height hat width measuring instrument and using method prior art difference thereof, improved hat width and the crown height efficiency of measuring tree crown, specifically:
1) standing tree crown height hat width measuring method, as shown in Figure 1,1. settles stadimeter, uses the oblique distance L of stadia surveying instrument to standing tree diameter of a cross-section of a tree trunk 1.3 meters above the ground place; 2. settle box compass to make itself and stadimeter at same position, use the vertical angle of inclination beta of compass survey instrument to standing tree diameter of a cross-section of a tree trunk 1.3 meters above the ground place
1.3with magnetic azimuth α
1.3; 3. keep box compass position motionless, aim at the lower B of standing tree hat, obtain angle of inclination beta
d, aim at treetop point C, obtain the angle of inclination beta while aiming
u; 4. keep box compass position motionless, aim at edge, the tree crown leftmost side, obtain the magnetic azimuth α while aiming
l, aim at tree crown rightmost side edge E, obtain the magnetic azimuth α while aiming
r.
2) utilize above-mentioned measuring and calculating gained basic data, can calculate the following factor:
The crown height of tree crown: h=Lcos β
1.3[tan β
u-tan β
d]
The hat width of standing tree: P=Lcos β
1.3[tan| α
1.3-α
l|+tan| α
r-α
1.3|].
Claims (1)
1. a standing tree crown height hat width measuring method, is characterized in that: first, settle stadimeter, surveying instrument is to the oblique distance L of the standing tree diameter of a cross-section of a tree trunk 1.3 meters above the ground to be measured; Secondly, settle box compass at same position, surveying instrument is to the vertical angle of inclination beta at the standing tree diameter of a cross-section of a tree trunk 1.3 meters above the ground to be measured place
1.3with magnetic azimuth α
1.3; Again, keep box compass position motionless, aim at successively the lower B of standing tree to be measured hat and treetop C, and angle of inclination beta while obtaining twice aiming respectively
dand β
u; Then, keep centre position motionless, aim at successively tree crown leftmost side edge D and edge, rightmost side E, and magnetic azimuth α while obtaining twice aiming respectively
land α
r; Finally, according to above-mentioned measurement the data obtained, utilize 1. h=Lcos β of digital-to-analogue
1.3[tan β
u-tan β
d] calculate the crown height h of tree crown, utilize 2. P=Lcos β of digital-to-analogue
1.3[tan| α
1.3-α
l|+tan| α
r-α
1.3|] calculate the hat width P of standing tree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332337.2A CN104089609A (en) | 2014-07-11 | 2014-07-11 | Method for measuring crown height and crown breadth of stumpage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332337.2A CN104089609A (en) | 2014-07-11 | 2014-07-11 | Method for measuring crown height and crown breadth of stumpage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104089609A true CN104089609A (en) | 2014-10-08 |
Family
ID=51637347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410332337.2A Pending CN104089609A (en) | 2014-07-11 | 2014-07-11 | Method for measuring crown height and crown breadth of stumpage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104089609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587896A (en) * | 2021-08-16 | 2021-11-02 | 山东省林业科学研究院 | High-precision measurement method for length of trunk and crown of tree in height under any terrain condition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570557A (en) * | 2004-03-19 | 2005-01-26 | 北京林业大学 | Electronic angle gauge tree surveying apparatus and automatic tree survey method |
| CN1815140A (en) * | 2006-03-13 | 2006-08-09 | 中国林业科学研究院资源信息研究所 | Stereo image-pickup tree measruing instrument and its fully-automatic tree-measuring method |
| CN2859463Y (en) * | 2005-09-02 | 2007-01-17 | 北京林业大学 | Angle template tree-measuring instrument reformed by forest compass |
| CN103185556A (en) * | 2012-04-24 | 2013-07-03 | 北京林业大学 | Tree crown competition factor calculating and measuring method taking prism-free full-station instrument as tool |
-
2014
- 2014-07-11 CN CN201410332337.2A patent/CN104089609A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570557A (en) * | 2004-03-19 | 2005-01-26 | 北京林业大学 | Electronic angle gauge tree surveying apparatus and automatic tree survey method |
| CN2859463Y (en) * | 2005-09-02 | 2007-01-17 | 北京林业大学 | Angle template tree-measuring instrument reformed by forest compass |
| CN1815140A (en) * | 2006-03-13 | 2006-08-09 | 中国林业科学研究院资源信息研究所 | Stereo image-pickup tree measruing instrument and its fully-automatic tree-measuring method |
| CN103185556A (en) * | 2012-04-24 | 2013-07-03 | 北京林业大学 | Tree crown competition factor calculating and measuring method taking prism-free full-station instrument as tool |
Non-Patent Citations (2)
| Title |
|---|
| 中国森学会经营分会: "《森林可持续经营研究》", 31 July 2011 * |
| 徐伟恒: "手持式数字化多功能电子测树枪的研制与试验", 《农业工程学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587896A (en) * | 2021-08-16 | 2021-11-02 | 山东省林业科学研究院 | High-precision measurement method for length of trunk and crown of tree in height under any terrain condition |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |