地面调查于2019年9月10日-17日进行。对样地内胸径大于5cm的树

Ground survey on September 10, 2019 - carried out on the 17th. The trees of DBH greater than 5cm plot of each single timber and positioning a sizing wood, including high trees, under high branches, DBH and crown. Tree branches and at high VertexV® using high laser altimetry ultrasonic measurements, diameter of trunk diameter at breast height scale on uphill measured at 1.3 meters, with the north and south canopy crown collection tape, the longest distance east-west direction; Laser Station for use Sanding single wooden positioning; while recording other information slope, aspect, and canopy density and so on.

The ground survey will be conducted from 10 to 17 September 2019. One-wood positioning and per-wood gauge for trees with a chest diameter greater than 5cm in the sample area, including tree height, branch height, chest diameter and crown. Tree height and branch height using VertexV ® ultrasonic laser altimeter measurement, chest diameter by the chest diameter on the uphill trunk 1.3 meters measurement, the crown with a leather ruler to collect the tree crown north and south, the longest distance in the east and west direction;

The ground survey will be conducted from September 10 to 17, 2019. The trees with DBH greater than 5cm in the sample plot were located by single tree and measured by each tree, including tree height, branch height, DBH and crown. The height of the tree and the height under the branch are measured by the vertexv ® ultrasonic laser altimeter, and the DBH is measured by the DBH scale at 1.3m of the tree trunk on the uphill slope. The crown diameter is measured by the tape to collect the longest distance in the north-south and east-west directions of the crown. The single wood positioning is carried out by the tripod laser total station, and other information such as slope, slope direction and canopy closure are recorded at the same time.