Method and device for determining utilization efficiency of tree individual horizontal moisture

The embodiment of the invention provides a method and device for determining the horizontal water utilization efficiency of a tree individual. The method comprises: obtaining the transpiration rate ofthe tree individual to be detected; obtaining the net assimilation rate of the to-be-tested tree individual; and determining the water utilization efficiency of the to-be-detected tree individual according to the transpiration rate and the net assimilation rate. According to the embodiment of the invention, the transpiration rate and the net assimilation rate of the to-be-detected tree individualare obtained respectively, the water utilization efficiency of the to-be-detected tree individual is determined according to the transpiration rate and the net assimilation rate, the detection resultis accurate, and the time resolution is high. 本发明实施例提供一种树木个体水平水分利用效率的确定方法及装置，所述方法包括：获取待测树木个体的蒸腾速率；获取所述待测树木个体的净同化速率；根据所述蒸腾速率和所述净同化速率确定所述待测树木个体的水分利用效率。本发明实施例通过分别获取待测树木个体的蒸腾速率和净同化速率，根据蒸腾速率和净同化速率确定待测树木个体的水分利用效率，测定结果准确，且具有高的时间分辨率。