CN102252612B - Method for measuring crown volume based on elevation isoline method - Google Patents
Method for measuring crown volume based on elevation isoline method Download PDFInfo
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- CN102252612B CN102252612B CN 201110164615 CN201110164615A CN102252612B CN 102252612 B CN102252612 B CN 102252612B CN 201110164615 CN201110164615 CN 201110164615 CN 201110164615 A CN201110164615 A CN 201110164615A CN 102252612 B CN102252612 B CN 102252612B
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- tree crown
- volume
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Abstract
The invention discloses a method for measuring crown volume based on an elevation isoline method. In the method, under the condition of not hewing down standing trees, three-dimensional space coordinates of a crown is obtained through a prism-free laser overall meter so as to draw contour lines of the crown, and a digital elevation model of the crown is established by using the counter lines, and then the volume of the crown is calculated; therefore, work efficiency is greatly improved, labor intensity is reduced, and particularly, serious damage to forests due to the fact that section diameters are obtained and distinguished by hewing down a great amount of trees during the traditional tree volume measurement process can be avoided. The method has a broad market prospect.
Description
Technical field
The invention relates to the method that Tree Crown Volume calculates, particularly about standing tree its volume of Accurate Measurement in the time need not cuting down, with a kind of method that measures Tree Crown Volume based on the elevation isoline method.
Technical background
Tree Crown Volume be Forestry Investigation planning must survey project, be to detect tree vigor, prediction trees biomass, the important parameter of reflection forest land yield-power is the important foundation data in digital gardens, therefore, is a focus of forestry research all the time.for many years, when finding the solution the trees volume in forestry, being mostly to use conventional methods, is namely to cut down a large amount of standing tree as sample trees, utilizes felled tree sectional measurement formula to calculate the volume of timber, the damage that this method causes forest is large, use in practice the isometric sectional measurement of standing tree, standing tree sectional measurement and the To Determine The Standing Volume By Pressler Methods such as tired supreme people's court, although avoided the damage of forest, but the limitation that is limited to surveying instrument environment and precision, and workload is very large, be unfavorable for the foundation of green amount database and the storage of data, Management and application is unified, the surface coordinate instrumentation Tree Crown Volume that " a kind of method that measures Tree Crown Volume based on the elevation isoline method " measures tree crown with the non-prism laser total station replaces complicated artificial stereo measurement, simultaneously, the precision of the conventional methood of determining yield by volume volume calculated of the volume ratio that the method is calculated can improve more than 10 times, avoided because of the urban greenery plants height larger, use the larger disadvantage of artificial tape measuring relative error.Traditional standing volume is calculated, or needs a large amount of trees of felling, and the damage that forest is caused is large; Need a large amount of manpowers to measure and calculate, precision can not satisfy the requirement that precision forestry is measured, and day by day comes into one's own and today of exquisite precision and speed at ecologic environment, and this two various methodologies has inadvisable part.Use the method that measures Tree Crown Volume based on the elevation isoline method, not only can cut down standing tree, preserve the ecological environment; And can greatly improve precision and the speed of finding the solution the trees volume, administrative authority provides the foundation of economic planning accurately, decision-making foundation for forestry.
Summary of the invention
The purpose of this invention is to provide a kind of method that measures Tree Crown Volume based on the elevation isoline method, it be by the non-prism laser total station in the treetop on eight directions in east, south, west, north, the southeast, northeast, southwest, northwest of tree crown bottom, gather the three-dimensional coordinate on tree crown surface every identical height, measure the volume of tree crown by building digital elevation model, it has overcome the deficiency that prior art exists.
the object of the present invention is achieved like this: arrive the east of tree crown bottom in the treetop by the non-prism laser total station, south, the west, north, the southeast, northeast, southwest, on the direction of eight of northwests, gather the three-dimensional coordinate on tree crown surface every identical height, the round and smooth curve of point on the tree crown surface of equal height collection is coupled together, form level line, at first draw square grid on the level line that establishes, the grid length of side is upper 2 centimetres of figure, this just is divided into some parts with the level line of tree crown, obtain the elevation on each grid summit with linear interpolation, and annotation is in the upper right side of respective vertices, design altitude is designated as 0, angle point volume computing formula wherein: height of tree crown h*1/4 grid area, edge point volume computing formula: height of tree crown h*2/4 grid area, flex point volume computing formula: height of tree crown h*3/4 grid area, central point volume computing formula: height of tree crown h*1 grid area, the volume of tree crown be each square grid volume and.
The present invention has advantages of following: utilize the elevation isoline method to measure the method instrumentation of Tree Crown Volume, need not cut down standing tree, protected forest; Utilize the non-prism laser total station to obtain the three-dimensional data of tree crown, thereby obtained the elevation level line of tree crown, set up digital elevation model, realize the reproduction of standing tree, this measurement has omnibearing characteristics; Utilize the elevation isoline method to measure the method instrumentation of Tree Crown Volume, efficient is high, labour intensity is little.
Embodiment
On eight directions in east, south, west, north, the southeast, northeast, southwest, northwest of tree crown bottom, gather the three-dimensional coordinate on tree crown surface in the treetop every identical height, measure the volume of tree crown by building digital elevation model.The round and smooth curve of point on the tree crown surface of equal height collection is coupled together, form level line, at first draw square grid on the level line that establishes, the grid length of side is upper 2 centimetres of figure, this just is divided into the level line of tree crown some parts, obtain the elevation on each grid summit with linear interpolation, and annotation is in the upper right side of respective vertices, design altitude is designated as 0, wherein angle point volume computing formula: height of tree crown h*1/4 grid area; Edge point volume computing formula: height of tree crown h*2/4 grid area; Flex point volume computing formula: height of tree crown h*3/4 grid area; Central point volume computing formula: height of tree crown h*1 grid area; The volume of tree crown be each square grid volume and.
Claims (1)
1. method that measures Tree Crown Volume based on the elevation isoline method, it is characterized in that: in the treetop on eight directions in east, south, west, north, the southeast, northeast, southwest, northwest of tree crown bottom, use the non-prism laser total station gathering the three-dimensional coordinate on tree crown surface every identical height, measure the volume of tree crown by building digital elevation model, it is characterized in that: the method that wherein builds digital elevation model is as follows: the round and smooth curve of point on the tree crown surface of equal height collection is coupled together, form level line; The method that wherein measures Tree Crown Volume is as follows: at first draw square grid on the level line that establishes, the grid length of side is upper 2 centimetres of figure, this just is divided into some parts with the level line of tree crown, obtain the elevation on each grid summit with linear interpolation, and annotation is in the upper right side of respective vertices, design altitude is designated as 0, wherein angle point volume computing formula: height of tree crown h*1/4 grid area; Edge point volume computing formula: height of tree crown h*2/4 grid area; Flex point volume computing formula: height of tree crown h*3/4 grid area; Central point volume computing formula: height of tree crown h*1 grid area; The volume of tree crown be each square grid volume and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110164615 CN102252612B (en) | 2011-06-14 | 2011-06-14 | Method for measuring crown volume based on elevation isoline method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110164615 CN102252612B (en) | 2011-06-14 | 2011-06-14 | Method for measuring crown volume based on elevation isoline method |
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| Publication Number | Publication Date |
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| CN102252612A CN102252612A (en) | 2011-11-23 |
| CN102252612B true CN102252612B (en) | 2013-06-12 |
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| CN 201110164615 Expired - Fee Related CN102252612B (en) | 2011-06-14 | 2011-06-14 | Method for measuring crown volume based on elevation isoline method |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103389036A (en) * | 2012-05-10 | 2013-11-13 | 北京林业大学 | Method for calculating volume of standing tree based on three-dimension laser measurement data |
| CN103185557B (en) * | 2012-08-13 | 2016-01-20 | 谢鸿宇 | A kind of tree three-dimensional green measuring method and system |
| CN103175484B (en) * | 2012-12-17 | 2016-01-13 | 谢鸿宇 | A kind of tree crown measuring method based on three-dimensional laser scanning system |
| CN103206944A (en) * | 2013-02-21 | 2013-07-17 | 北京林业大学 | Method for calculating and measuring volume and area of crown based on three-dimensional laser-point cloud data |
| CN104463164B (en) * | 2014-09-03 | 2018-02-13 | 中国科学院遥感与数字地球研究所 | It is a kind of based on umbrella frame method and crown height than trees canopy structure information extracting method |
| CN105371762B (en) * | 2015-11-20 | 2017-11-07 | 南京农业大学 | A kind of top fruit sprayer volume measuring method based on graphical analysis |
| CN106249250A (en) * | 2016-09-21 | 2016-12-21 | 江西天祥通用航空股份有限公司 | A kind of method and system of forest information detection |
| CN110702000A (en) * | 2018-07-10 | 2020-01-17 | 北京林业大学 | Method for calculating standing timber volume based on improved Hough change laser radar point cloud data |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3803750B2 (en) * | 2002-02-22 | 2006-08-02 | 防衛庁技術研究本部長 | Volume measuring method and volume measuring program |
| CN101520307A (en) * | 2008-02-26 | 2009-09-02 | 中国计量科学研究院 | Method for measuring tree-crown volume fractal dimension by applying three-dimensional laser image-scanning system |
| JP5388932B2 (en) * | 2009-04-30 | 2014-01-15 | キヤノン株式会社 | Information processing apparatus and control method thereof |
| CN101793509A (en) * | 2010-03-08 | 2010-08-04 | 北京林业大学 | Three-dimensional green quantity measuring method |
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| CN102252612A (en) | 2011-11-23 |
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