Grassland or dry desert region undershrub and herbaceous plant investigation sample frame

Abstract

Disclosed is a grassland or dry desert region undershrub and herbaceous plant investigation sample frame. The grassland or dry desert region undershrub and herbaceous plant investigation sample framecomprises four corner piles and four enclosing rods; every corner pile is detachably fixed to the corresponding two enclosing rods; the two enclosing piles on every corner pile form a right angle of asquare frame, and the four enclosing rods and the four corner piles are sequentially connected in a pole-pile-pole mode to form a sample frame body; the corner piles are in a cuboid structure, one side surface of every corner pile is provided with a T-shaped head socket, and the side surface of the corner pile, which is close to the side surface where the T-shaped head socket, is provided with athreaded socket; one end of every enclosing rod is provided with a T-shaped plug, and the other end of the enclosing rod is provided with a threaded plug; every T-shaped plug is connected with the corresponding T-shaped socket, and every threaded plug is threadedly connected with the corresponding threaded socket to form a rectangular sample frame body. The grassland or dry desert region undershrub and herbaceous plant investigation sample frame also comprises connecting rods, and when needing to expand the grassland or dry desert region undershrub and herbaceous plant investigation sample frame, a user can connect the connecting rods with the enclosing rods. The grassland or dry desert region undershrub and herbaceous plant investigation sample frame is applicable to investigation of undershrub plants in dry desert regions, and through fastened connection and threaded connection between the enclosing rods and the corner piles, ensures the enclosing rods to be straight and the cornersof the sample frame body to be right-angled.

Description

technical field [0001] The invention relates to a sample frame for investigation of small shrubs and herbaceous plants in grassland or arid desert area, which is especially suitable for the investigation of low shrubs in arid desert area. Background technique [0002] Vegetation survey is the main content and routine work of desert ecology research and desert grassland monitoring research, and quadrat survey is the most commonly used method. The general method is to first select the sample plot and determine the sample point, draw a small square sample plot of 50cm×50cm or 100cm×100cm on the sample point with a steel tape, and then investigate the type, quantity and coverage of plants in it. However, on the one hand, the transection line cannot pass through in a straight line due to the occlusion of plants when drawing the sample frame; on the other hand, it is difficult to make the corners of the small sample quadrats at right angles; [0003] Some people in our country ha...

AI Technical Summary

Problems solved by technology

But the common feature of the above sample frame is that the surrounding bars of the sample frame are pressed into the plant branches from top to bottom. When encountering harder small shrub branches, the surrounding bars of the sample frame cannot be pressed Appropriate height

In addition, the surrounding poles of the folding style square frame are generally also foldable, so it is difficult to ensure that the surrounding poles are in a straight line after unfolding, and it is also difficult to ensure that the four corners of the square frame are at right angles.

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