Measuring device for diameter at breast height and branch diameter of plant in karst regions and using method thereof

The invention discloses a measuring device for the diameter at breast height and branch diameter of a plant in karst regions and a using method thereof. The measuring device comprises a base, whereinthe base is of a cylindrical tubular structure with a closed bottom; the inner wall of the base is fixedly connected with a horizontal bobbin; the upper part of the base is movably connected with a plurality of telescopic hollow connecting rods; the connecting rod at the uppermost end is connected with a measuring device through threads; a movable measuring scale is arranged on the measuring device; two sides of one end of the measuring scale are fixedly connected with a measuring scale clamp A and a soft rope fixing column respectively; and a soft rope is connected between the soft rope fixing column and the bobbin. The diameter at breast height and branch diameter of the plant can be measured directly by using the device, and the diameter measurement for branches at alls parts of the plant can be met through the