CN106908020A - A kind of standing tree grows overall process monitoring method - Google Patents

Abstract

The invention discloses a method for monitoring the whole growth process of standing trees. This invention is mainly used in the monitoring of the whole growth process of standing trees in a small area. The diameter at breast height of standing trees at 1.3 meters is marked as d _1.3 with red paint, and the diameter at breast height at 1/3H and 2/3H is marked as d _1/3H , d _{2 /3H} and measure the tree height h _1/3H and h _2/3H of these two marked points, when the height increase h≥2/3H, add a new marked point, and then during the growth of the standing tree year by year, the same The date uses the same method to measure and mark the above values; finally, based on the yearly measured values h _t , d _t , and h _t+1 , d _t+1 , establish the standing tree growth equation, which reflects the vertical growth of the standing tree. and longitudinal growth patterns.

Description

A method for monitoring the whole growth process of standing trees

1. Technical field

The invention relates to a method for monitoring the whole growth process of a standing tree, in particular to a method for monitoring the whole growth process of a non-destructive standing tree.

2. Technical background

Forest resource monitoring is one of the hotspots in current global change research and sustainable development. The monitoring of the whole process of standing tree growth refers to the systematic measurement, observation, recording, analysis and evaluation of its resource status by using information collection and processing methods within a certain time and space range, so as to reveal the status of various factors in the process of regional resource changes. The internal law of relationship and change shows its evolution track and change trend, meets the needs of standing tree resources evaluation, and provides decision-making basis for rational management of standing tree resources and sustainable development.

In forest resource monitoring, the measurement and accurate value of standing tree diameter at breast height and tree height are the most important content. Although the traditional monitoring methods of the whole process of standing tree growth and the existing monitoring methods such as satellite remote sensing, video superstation, laser radar, and sound waves have largely solved some problems in the monitoring of the whole process of growing trees, but in However, there are many shortcomings and deficiencies in actual monitoring:

① The measurement accuracy of the satellite remote sensing monitoring method is limited, and the forest resources can only be estimated macroscopically. It is basically powerless to obtain the information of a single tree in the forest, and cannot meet the precise monitoring of a single tree required for precise forestry research. Requirements, and the acquisition of remote sensing images is greatly affected by the weather, and the cost is expensive.

② Some instruments are too complex and costly. At the same time, for the harsh environment of wild woodland, the robustness of the instrument itself is not good, and it is greatly affected by external interference.

In order to overcome the above shortcomings and deficiencies in the monitoring of the whole process of growing a standing tree, the present invention proposes a method for monitoring the whole process of growing a standing tree.

3. Contents of the invention

In order to overcome the deficiencies and shortcomings in obtaining standing tree growth information by using traditional artificial field monitoring, satellite remote sensing monitoring, laser radar, total station and other technologies in the monitoring of the whole process of growing trees, the present invention proposes a whole process of growing trees monitoring method.

The purpose of the present invention is achieved like this:

To monitor the whole process of standing tree growth, first, set the first original mark point around the standing tree 1.3m away from the ground with red paint, measure and record the standing tree diameter d _1.3 here, and measure the total height of the standing tree as H, Set the second and third original mark points around 1/3H and 2/3H of the standing tree to be measured with red paint, measure and record the standing tree height h _1/3H , h _2/3H and Standing tree diameters d _1/3H , d _2/3H ; then, one year later, use the same method to re-measure the DBH value d _1.3 at 1.3m, and the standing tree heights h _1/3H , h ₂ at 1/3H and 2/3H _/3H and standing tree diameters d _1/3H and d _2/3H are measured and marked. When the height increase h≥2/3H, a new mark point is added. Then, during the growing process of standing trees year by year, the same date is used every year. measure and mark the above values; finally, based on the yearly measured values h _t , d _t and h _t+1 , d _t+1 , establish the standing tree growth equation, which reflects the horizontal and vertical growth of the standing tree growth pattern.

Compared with existing methods, the present invention has the following advantages:

① By establishing the standing tree growth equation, the tree height and diameter at breast height can be measured more accurately according to the law, and its growth law in the horizontal and vertical directions can be reflected;

②Compared with the satellite remote sensing monitoring method, the technology input cost of this invention is low, and it is easy to operate and obtain, and is more suitable for flexible and accurate measurement in a small area;

3. Utilize this invention, can find the correlative relationship between factors such as tree height and diameter at breast height, then just can concentrate on the measurement of diameter at breast height for the tree height and volume measurement of single tree, and can calculate the tree height of standing tree more accurately And volume, which will greatly improve work efficiency.

4. Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a schematic diagram of a monitoring method for the whole process of standing tree growth; wherein, H is the height of the tree, d _1.3 is the diameter at breast height at 1.3m from the ground, and d _1/3H and d _2/3H are 1/3H and 2/3H respectively DBH.

5. Specific implementation

Compared with the existing monitoring methods, a method for monitoring the whole process of standing tree growth has been greatly improved, specifically:

1) Use red paint to surround the first original mark point at the standing tree 1.3m from the ground, measure and record the diameter d _1.3 of the standing tree here, and record the total height of the standing tree as H;

2) Set the second and third original mark points around 1/3H and 2/3H of the standing tree to be measured with red paint, measure and record the standing tree height h _1/3H , h _{2/ 3H} and standing tree diameter d _1/3H , d _2/3H ;

3) One year later, use the same method to check again the DBH at 1.3m d _1.3 , the standing tree heights h _1/3H and h _{2/3H at 1/3H and 2/3H} and the standing tree diameters d _1/3H and d _{2 /3H} to measure and mark, when the height growth amount h≥2/3H, add a new mark point, and then use the same method to measure and mark the above values on the same date every year during the growth of the standing tree;

4) Based on the yearly measured values h _t , d _t and h _t+1 , d _t+1 to establish the standing tree growth equation This reflects the growth law of standing trees in the horizontal and vertical directions.

Claims (1)

1. A method for monitoring the whole growth process of a standing tree is characterized in that: firstly, at a distance of 1.3m from the ground, the standing tree is surrounded by red paint to set the first original mark point, and the standing tree DBH value d _1.3 is measured and recorded here; secondly, Measure the total height of the standing tree and record it as H, use red paint to surround the second and third original mark points at the 1/3H and 2/3H of the standing tree to be measured, measure and record the standing tree height of these two places respectively h _1/3H , h _2/3H , and standing tree diameters d _1/3H , d _2/3H ; then, one year later, use the same method to measure the DBH value d _1.3 at 1.3m, 1/3H and 2/3H Measure and mark the standing tree height h _1/3H , h _2/3H and the standing tree diameter d _1/3H , d _2/3H , when the height increase h≥2/3H, add a mark point, and then add a mark point on the standing tree During the year-by-year growth process, use the same method on the same day every year to measure and mark the above values; finally, based on the year-by-year measurement values h _t , d _t and h _t+1 , d _t+1 to establish the standing tree growth equation This reflects the growth law of standing trees in the horizontal and vertical directions.