Forest area canopy density information acquisition device and measurement method

Abstract

A forest area canopy density information acquisition device disclosed by the present invention comprises a mobile base, a measuring rod, a tool box, a telescopic rod, a supporting table and a measuring rod, one end of the measuring rod is movably connected with a transmission disc through a connecting piece, the measuring rod comprises a rod body, the upper surface of the rod body is provided with multiple light sensors, the multiple light sensors are arranged in the direction of the rod body in a single row at equal intervals, the bottom face of the rod body is fixedly connected with a data processing unit, and the data processing unit records the time when each light sensor receives light and calculates the canopy density of the forest area. The problems that according to an existing measuring method, due to the fact that low vegetation and high vegetation intersect with each other, the shooting situation is difficult to judge accurately, the distance between the high-altitude operation height of an unmanned aerial vehicle and the ground is difficult to determine, and the reliability of a measuring result is poor are solved.

Description

technical field [0001] The invention relates to a device and a measurement method for information collection of canopy density in a forest area, belonging to the technical field of forestry. Background technique [0002] Forest canopy density refers to the ratio of the vertical projected area of ​​the tree canopy in the forest land to the area of ​​the forest land, usually expressed in tenths, and the one that completely covers the ground is 1. According to the canopy density information of the forest area, the coverage of forest vegetation can be clearly obtained The degree reflects the density of forest vegetation and provides a set of accurate and reliable parameters for the forest management department to judge the state of the forest. Usually, a dense forest is greater than or equal to 0.7, a moderately closed forest is 0.2-0.69, and a closed forest is less than 0.2. Sparse forest. [0003] The existing measurement method uses UAVs to take pictures at high altitude, an...

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Problems solved by technology

[0003] The existing measurement method uses UAVs to take pictures at high altitude, and then obtains the canopy density data of the forest area through the analysis of multiple sets of images. In practice, there is a cross between the lower vegetation and the higher vegetation. It is difficult to accurately judge the shooting situation, the distance between the drone's high-altitude operation height and the ground is difficult to determine, and the calculation of the actual shooting area is inaccurate, which makes the reliability of the results poor.

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