Back to Search
Start Over
Spatiotemporal variations of multi-scale drought in Shandong Province from 1961 to 2017
- Source :
- Water Supply, Vol 21, Iss 2, Pp 525-541 (2021)
- Publication Year :
- 2021
- Publisher :
- IWA Publishing, 2021.
-
Abstract
- Drought has caused serious damage to the water resource system and agricultural production in Shandong Province, China. This study calculated the standardized precipitation evapotranspiration index (SPEI) based on the monthly precipitation and average temperature data of 25 meteorological stations in Shandong Province from 1961 to 2017. The trend analysis method and ArcGIS software were utilized to analyze the multi-scale (SPEI-1, SPEI-3, and SPEI-12) spatiotemporal changes of drought. The results revealed that (1) The intensity of drought showed an increasing trend in Shandong Province from 1961 to 2017; (2) The main periods of the drought on the seasonal scale (spring, summer, autumn, and winter) and annual scale were 8 years, 4 years, 15 years, 4 years, and 4 years, respectively; (3) Of the four seasons, the frequency of drought in autumn and winter were the highest. At the annual scale, the high-frequency drought areas were mainly concentrated in the southern mountainous regions; (4) In terms of the spatial change trend of drought, Shandong Province as a whole displayed a trend of becoming wet in the central and southwest regions and dry in the eastern region; and (5) Droughts were discovered to be simultaneously influenced by multiple atmospheric circulation indices in Shandong Province. HIGHLIGHTS The intensity of drought showed an increasing trend.; The spatial distribution of drought in Shandong Province varies greatly at different scales.; The aridity trend across the entire province in autumn.; Droughts in Shandong Province were simultaneously affected by multiple atmospheric circulation indices.
- Subjects :
- TC401-506
010504 meteorology & atmospheric sciences
Scale (ratio)
Water supply for domestic and industrial purposes
shandong province
drought
010501 environmental sciences
spatial-temporal evolution
01 natural sciences
spei
River, lake, and water-supply engineering (General)
Climatology
Environmental science
TD201-500
0105 earth and related environmental sciences
Water Science and Technology
Subjects
Details
- Language :
- English
- ISSN :
- 16070798 and 16069749
- Volume :
- 21
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Water Supply
- Accession number :
- edsair.doi.dedup.....fcd7d3638239a838437e0e459597edc9