Coverage measuring device applied to shrub field

Abstract

The invention relates to the technical field of coverage measurement, and discloses a coverage measurement device applied to the shrub field, the coverage measurement device comprises a mounting rack, two adjacent side edges of the mounting rack are rotatably provided with a first frame and a second frame respectively, the first frame and the second frame are the same in structure, the cross section of the first frame and the cross section of the second frame are I-shaped, and the cross section of the second frame is H-shaped. Rolling assemblies are rotationally arranged on the outer sides of the first frame and the second frame correspondingly, a third frame is movably installed on the inner side of the first frame, and a third frame is movably installed on the inner side of the second frame. According to the folding type folding frame, the first frame, the second frame, the third frame and a fourth frame are conveniently folded together through the arrangement of a foldable structure, and the occupied space is reduced; the device is simple in structure and convenient to store and transport, the pull ropes can be conveniently wound together through the winding assembly, the pull ropes are prevented from being wound together disorderly, during use, the first frame, the second frame, the third frame and the fourth frame are unfolded to form a rectangular frame, then the pull ropes are pulled out and installed, then coverage measurement can be conducted, and the device is convenient to use and carry.

Description

technical field [0001] The invention relates to the technical field of cover measurement, in particular to a cover measurement device applied in the shrub field. Background technique [0002] In recent years, my country has continuously strengthened the protection of the ecological environment, especially for ecologically fragile grassland areas. Shrub coverage refers to the ratio of the vertical projected area of ​​the aboveground part of the shrub to the unit land area. The shrub coverage It is a comprehensive indicator reflecting the degree of shrub density and photosynthetic area, and an important indicator and control standard for measuring regional ecosystem changes. Therefore, the calculation and statistics of shrub coverage are important links in grassland ecological protection. At present, when scientific workers make statistics on the coverage of shrubs, they usually use sampling surveys, that is, by setting multiple survey points in the area to be surveyed, and for...

AI Technical Summary

Problems solved by technology

At present, when scientific workers make statistics on the coverage of shrubs, they usually use sampling surveys, that is, by setting multiple survey points in the area to be surveyed, and forming a grid of a certain size with thin ropes at each survey point, and then By visually estimating the shrub coverage area in the grid, the shrub coverage is calculated by the ratio of the shrub coverage area to the enclosure area of ​​the grid. With this method, since the string is easily deformed, especially in the shrub Under the influence of the environment, it is difficult to control the size and shape of the squares surrounded by thin ropes, resulting in great uncertainty in the actual area of ​​the enclosure. Moreover, the method of estimating the area of ​​shrubs in the squares by visual inspection mainly relies on human subjective judgment. Scientists have high requirements for visual judgment ability and experience, human errors are large, and the existing measuring devices are large in size and inconvenient to carry

Images