Temporal-Spatial Characteristics of Drought in Guizhou Province, China, Based on Multiple Drought Indices and Historical Disaster Records

Table 4

Comparison of historical affected area in typical drought years based on the SPI, CI, and RDI.

Affected area (×10^4 hm^2)	1988	1989	1990	1992	2010	2011	2013
Historical	114.07	104.6	128.93	150.93	163.9	182.25	111.78
SPI historical	−0.7	−2.1	−0.5	−0.7	−0.5	−2.6	−1.7
CI historical	−0.5	−1.0	−0.5	−0.1	−1.1	−1.5	−0.7
RDI historical	−0.7	−1.1	−0.5	−0.7	−0.1	−2.4	−1.9