Spatial and Temporal Dynamics of Drought and Waterlogging in Karst Mountains in Southwest China

Under the synergetic effect of land use and climate change, natural disasters occur frequently in karst region southwest China. This study used daily precipitation data from 33 meteorological stations across 61 years (1960–2020), utilized MK test Z index to calculate levels drought waterlogging (DW) at multiple times (month year) spatial (province, sub-divisions, station) scales, investigated spatiotemporal patterns their associated factors DW mountains Guizhou, The results showed that: (1) occurred increasingly during period with seven mutations annual DW. (2) There were more droughts (especially heavy droughts) based on data, but waterlogging) monthly data. Drought most summer, while was frequent spring, followed by winter. (3) normalized difference (NDDWI) created this exhibit combined phenomena, which could be improved future better present compound hazards. Guizhou complicated terrain, geology, vegetation, use, etc.