DETECTING METHOD OF WATER SATURATED WEAK AREA OF FOREST SOIL FOR IMPROVING LANDSLIDE DANGER MAP USING FOREST WATER MAP AND THE SYSTEM

摘要

The present invention comprises the steps of: (a) measuring a volumetric moisture content according to at least two or more metric moisture tensions for a soil sample collected from a specific grid; (b) Parameters for applying the random forest model by driving the simulator program using the measured metric moisture tension and volumetric moisture content obtaining estimates of , a, n, m; (c) said parameters , estimating optimal hyperparameters of the random forest model using the estimated values of a, n, and m and input variables, and performing model learning; (d) the parameters of the following equation (1) through the trained random forest model , deriving predicted values of a, n, m; (e) said parameters , a, n, producing a forest water map by calculating a predicted value of the volumetric moisture content for each metric moisture tension using Equation 1 determined by the predicted values; (f) calculating the difference between the volumetric moisture content at pF2.54, which is the soil moisture tension related to gravity water, and the volumetric moisture content, at pF0, which is related to saturation, in order to analyze the forest soil moisture saturation vulnerable area; and (g) when it is determined that the difference in soil moisture content of pF0-pF2.54 is less than or equal to a certain value as a result of the determination of step (f), determining the area as a vulnerable area for water saturation of forest soil and displaying it on a map To provide a method and system for searching for areas vulnerable to water saturation in forest soil for improving the landslide risk map using the forest water map, characterized in that