Method for measuring forest biodiversity monitoring fixed observation sample plot

The invention provides a method for measuring a forest biodiversity monitoring fixed observation sample plot. The method comprises the following steps: step 1, in a selected forest biodiversity observation area, determining a typical section, establishing a fixed sample plot, and collecting two initial coordinate points; step 2, importing the two initial coordinate points into an ArcGIS, segmenting the forest biodiversity monitoring fixed sample plot by using the ArcGIS according to the distance requirement of small quadrats determined by a monitoring scheme to form a plurality of small quadrats, and extracting the angular point coordinates of each small quadrat; 3, according to the angular point coordinates of each small quadrat, selecting a lofting point through RTK, and completing measurement work according to the lofting point and a preset lofting error. Real-time positioning can be achieved, limitation of topographic conditions is small, the measurement precision can reach the centimeter level, and the s