Temporal--spatial evolution of the lagged effect of Karst drainage basin
for rainfall-runoff in Central Guizhou of China
Abstract
The occurrence of atmospheric precipitation and runoff is not at the
same time, and a certain lag in time, and its lagged time and intensity
are affected by the water storage capacities, which is related to the
occurrence of droughts. This paper will develop the lagging index (LI)
based on the measured data of 56 rainfall stations and 11 hydrological
stations in the Central Guizhou of China, and analyze the
spatio-temporal evolution characteristics of rainfall-runoff. The
studies show that (1) the lagged effect of runoff to rainfall in the
Central Guizhou of China mainly shows the lagged 3 periods with the
lagged distribution areas accounting for more than 80% of the total
areas. (2) The order of spatio-temporal distribution differences of the
lagged intensities is the lagged period 2(Cv=0.62)