参考文献:
     [1] Basso, A., Bruno, E., Parise, M., et al. Morphometric analysis of sinkholes in a karst coastal area of southern Apulia (Italy) [J]. Environmental earth sciences, 2013, 70: 2545-2559.
     [2] Bruno, E., Calcaterra, D., Parise, M. Development and morphometry of sinkholes in coastal plains of Apulia, southern Italy. Preliminary sinkhole susceptibility assessment [J]. Engineering Geology, 2008, 99(3-4): 198-209.
     [3] Cahalan, M. D., Milewski, A. M. Sinkhole formation mechanisms and geostatistical-based prediction analysis in a mantled karst terrain [J]. Catena, 2018, 165: 333-344.
     [4] Day, M. Doline morphology and development in Barbados [J]. Annals of the Association of American Geographers, 1983, 73(2): 206-219.
     [5] de Carvalho Júnior, O. A., Guimarães, R. F., Montgomery, D. R., et al. Karst depression detection using ASTER, ALOS/PRISM and SRTM-derived digital elevation models in the Bambuí Group, Brazil [J]. Remote Sensing, 2013, 6(1): 330-351.
     [6] Kim, C. E., Anderson, T. A. Digital disks and a digital compactness measure [C]. In: Proceedings of the sixteenth annual ACM symposium on theory of computing. 1984: 117-124.
     [7] Kobal, M., Bertoncelj, I., Pirotti, F., et al. Using lidar data to analyse sinkhole characteristics relevant for understory vegetation under forest cover—Case study of a high karst area in the Dinaric Mountains [J]. PloS one, 2015, 10(3): e0122070.
     [8] Li, W., Goodchild, M. F., Church, R. An efficient measure of compactness for two-dimensional shapes and its application in regionalization problems [J]. International Journal of Geographical Information Science, 2013, 27(6): 1227-1250.
     [9] Liu, H., Wang, L. Mapping detention basins and deriving their spatial attributes from airborne LiDAR data for hydrological applications [J]. Hydrological Processes: An International Journal, 2008, 22(13): 2358-2369.
     [10] Öztürk, M. Z., Şener, M. F., Şener, M., et al. Structural controls on distribution of dolines on Mount Anamas (Taurus Mountains, Turkey) [J]. Geomorphology, 2018, 317: 107-116.
     [11] Wu, Q., Deng, C., Chen, Z. Automated delineation of karst sinkholes from LiDAR-derived digital elevation models [J]. Geomorphology, 2016, 266: 1-10.
     [12] Zhu, J., Pierskalla Jr, W. P. Applying a weighted random forests method to extract karst sinkholes from LiDAR data [J]. Journal of Hydrology, 2016, 533: 343-352.
     [13] Zumpano, V., Pisano, L., Parise, M. An integrated framework to identify and analyze karst sinkholes [J]. Geomorphology, 2019, 332: 213-225.