Carbon sink assessment method and device for target forest region

The embodiment of the invention provides a carbon sink assessment method and device for a target forest region. The method comprises the following steps: predicting a first tree feature of a target forest region according to a laser echo signal collected from the target forest region, the first tree feature being used for indicating the tree height of each sampling point in the target forest region; according to optical images collected by a camera for a plurality of sampling areas in the target forest area, second tree features corresponding to the sampling areas are determined, and the second tree features are used for indicating the number, the type and the diameter at breast height of trees included in the corresponding sampling areas; according to the first tree feature and the second tree features corresponding to the plurality of sampling areas, predicting a first aboveground biomass of the target forest area; and according to the first aboveground biomass, predicting the carbon sequestration amount of