Construction method of plant water source conservation functional group in karst rocky desertification region

The invention provides a method for constructing a plant water source conservation functional group in a karst rocky desertification region, which belongs to the technical field of ecological restoration and comprises the following steps: determining a hydrological level influencing the water retention of an ecological system; determining an influence index associated with water conservation of each level; analyzing the principal component to determine a main control factor of each level, and calculating a comprehensive score of each species in each level; and performing clustering analysis on the comprehensive score of each species in each level, dividing the level of the plant water source conservation function group, and constructing the karst rocky desertification region plant water source conservation function group. According to the method, the hydrological hierarchy is comprehensively analyzed, the relationship between the geographical environment characteristics and the plant adaptation function is ut