Abstract: TO INVESTIGATE THE DISINTEGRATION PROCESSES AND UNDERLYING RELATIONSHIPS OF ROOT-SOIL COMPLEXES IN DIFFERENT KARST HABITATS, ROOT-SOIL COMPLEXES FROM THREE DISTINCT HABITAT TYPES ( HIGH-INCLINATION HABITATS, MIDDLE-INCLINATION HABITATS, LOW-INCLINATION HABITATS ) WERE SELECTED AS RESEARCH SUBJECTS. THE STUDY EXAMINED THE SOIL DISINTEGRATION CHARACTERISTICS OF ROOT-SOIL COMPLEXES ACROSS THESE DIFFERENT HABITAT TYPES BY FIELD SURVEYS AND LABORATORY EXPERIMENTS, THE RESULTS SHOWS THAT: SOIL DISINTEGRATION WEIGHT AND DISINTEGRATION COEFFICIENTS VARY SIGNIFICANTLY ACROSS DIFFERENT SOIL HORIZONS, PORE SIZES, AND TIME INTERVALS WITHIN KARST HABITATS. ON THE UPPER SOIL LAYER, SOIL DISINTEGRATION EXHIBITS DIFFERENTIATION UNDER SMALL PORE DIAMETERS, WHILE CONVERGENCE IN DISINTEGRATION CHARACTERISTICS OCCURS UNDER LARGE PORE DIAMETERS, SOILS IN HIGH-INCLINATION HABITATS DEMONSTRATE HIGHER EROSION RESISTANCE THAN THOSE IN MIDDLE-INCLINATION HABITATS. THE DISINTEGRATION AND DIFFERENTIATION OF THE LOWER SOIL LAYER IS PRONOUNCED, UNDER SMALL-PORE CONDITIONS, THE EROSION RESISTANCE OF SOILS IN HIGH-INCLINATION HABITATS EXCEEDS THAT OF MIDDLE-INCLINATION HABITATS, CONVERSELY, UNDER LARGE-PORE CONDITIONS, SOILS IN MIDDLE-INCLINATION HABITATS DEMONSTRATE SUPERIOR EROSION RESISTANCE. THE RESEARCH FINDINGS CONTRIBUTE SIGNIFICANTLY TO UNDERSTANDING THE MECHANISMS OF SOIL EROSION AND WATER LOSS IN KARST REGIONS, AND PROVIDE SCIENTIFIC REFERENCES FOR ADDRESSING ROCK DESERTIFICATION AND IMPLEMENTING SOIL AND WATER CONSERVATION MEASURES IN KARST AREAS.