Document Type : Research Paper
Authors
Abstract
Drought is the most complex and unknown natural disaster that affects human more than other natural disasters. Droughts occurred in Fars province in recent decades showed the importance of drought study in this region. In this research, standard precipitation index (SPI) was calculated based on monthly rain of 26 stations in a period of 36 years (1963-1999). For investigation of spatial droughts changes in study area Kriging interpolate method were used. Then analyses were performed using linear regression model trend and Man-Kendal nonparametric test in studied stations. The results showed that the intensity of droughts in central parts of this province is more than other regions. The trends exist in all of studied stations except Chardangeh station.
Keywords
)