Marker post for vegetation investigation and research

The utility model discloses a marker post for vegetation investigation and research, which comprises a first marker post, a second marker post is arranged above the first marker post, the first marker post is a hollow tube body, the second marker post is sleeved inside the first marker post, a threaded hole is arranged on the surface of one side of the first marker post, and the threaded hole is communicated with the first marker post. A limiting bolt is movably connected into the threaded hole in a sleeved mode, a plurality of limiting holes are formed in the surface of one side of the second marker post, and the diameter of the limiting holes is equal to that of the limiting bolt. Through the designed first marker post, when the overall height of the device is adjusted, a second marker post is drawn out from the interior of the first marker post and extends to a proper height, and then a limiting bolt is screwed into a limiting hole through a threaded hole for fixing, so that the overall height of the devic