Nondestructive photographic tree measuring method capable of replacing that adopting analytic trees
A technology of analyzing wood and photogrammetry, applied in the direction of photo interpretation, etc., can solve the problems of low work efficiency and resource consumption, and achieve the effect of fast work speed, simple equipment and high efficiency
Active Publication Date: 2015-11-18
BEIJING FORESTRY UNIVERSITY
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, this measurement method needs to select trees of different diameters and ages for felling, which has defects such as destructiveness, low work efficiency, and resource consumption.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] First, use the photogrammetry method to observe the sample trees every year and accumulate data. Look for trees of different tree species and different diameter classes for observation. The tree trunk diameters in the north-south direction and east-west direction were observed at fixed points through photogrammetry. Ensure that continuous observations are made at the same location every year. Specific steps are as follows:
[0019] ① Selection of observation samples. According to different tree species and different diameter steps, the sample wood that can be used to replace the analytical wood is selected. ② Select two fixed observation points around the selected sample wood. Set an observation point in the north-south direction and east-west direction of the sample wood. The angle between the two observation points and the sample wood to be tested is about 90 degrees, and measure and record the horizontal distance L between the two observation points and the sampl...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a nondestructive photographic tree measuring method capable of replacing that adopting analytic trees. The nondestructive photographic tree measuring method comprises the following steps: firstly performing annual observation and measurement on sample trees by utilizing the photographic tree measuring method and then accumulating data, searching different tree species and trees with different diameter classes for observation and measurement, performing observation and measurement on the diameters of tree trunks in the north-south direction and the east-west direction respectively through photographic measuring fixed points, performing continuous observation and measurement at the same locations every year, so as to obtain the diameters of tree trunks of one kind of trees of all heights in different years. Through many years' observation and measurement, the obtained images and measured data are accumulated, which can be used for replacing measured data of analytic trees.
Description
1. Technical field [0001] The invention relates to a non-destructive tree measurement method for replacing analytic wood, in particular to a non-destructive tree measurement method for replacing analytic wood with the principle of photogrammetry. 2. Technical Background [0002] In order to study the growth process and characteristics of the same tree under different tree species or different site conditions, the method of "dissection" is often adopted to divide the tree into several sections, saw the disc, and then analyze its diameter at breast height, tree height, volume, shape, etc. Number, growth and change law, we call this method trunk analysis. The tree trunk as the object of analysis is called analytical wood. Trunk analysis is the basic method for studying the growth process of trees at present. However, this measurement method needs to select trees of different diameter classes and age classes for felling, which has defects such as destructiveness, low work effi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/04
CPCG01C11/04
Inventor 冯仲科黄晓东邱梓轩
Owner BEIJING FORESTRY UNIVERSITY