Abstract: Developed in Guilin area are typical tropical karst landform of peak forests, which may be classified into two major types: peak cluster-depression type and peak forest-plain type. An attempt is made to carry out morphometric measurements and statistic analyses on one hundred and eighty-two polygonal karst depressions in a studied area of 69km2. The projecting area of each polygonal depression, and the elevations of the summit of each stone peak and the bottom of each closed depression are measured. All dep...