[Objective] The characteristics of precipitation change and multi-time scale characteristics of drought and flood in the farming-grazing transitional zone of South China was studied in order to provide scientific reference for the decision-making of drought and flood disaster prevention and control

ecological reconstruction and protection in the pastoral area.[Methods] Based on monthly precipitation data of 20 meteorological stations in the farming-grazing transitional zone of South China from 1960 to 2017

the precipitation characteristics

spatial and temporal patterns of drought and flood disasters were studied by using standardized precipitation index (SPI)

Inverse Distance Weight Interpolation and M-K mutation test in the farming-grazing transitional zone of South China in recent 58 years.[Results] ① The annual average precipitation in the farming-grazing transitional zone of South China increased at a rate of 3.98 mm/10 a in the past 58 years

precipitation was mainly concentrated in summer. Detected by M-K method

the abrupt change of annual average precipitation was occurred in 1990. ② Due to the influence of climate

atmospheric circulation

topography

altitude

underlying surface and other factors

the spatial distribution of precipitation was bounded by Vici-Litang-Ruoergai

with less precipitation in the northwest and more in the southeast

showed a decreasing trend from southeast to northwest. ③ The annual precipitation in the study area was bounded by Songpan-Malkang-Xinlong-Litang-Daocheng line. The annual precipitation in the east of the line showed a more significant growth trend

while the annual precipitation in the west showed a more significant decrease trend.[Conclusion] In the study area

the frequency of drought was slightly higher in the 1960s-1970s

and the frequency of flooding was higher in the 1980s-1990s. Since 2000

the drought and flood disasters have been weakened obviously.