[1]REN Jiancheng,ZHANG Tingting.Evolution Characteristics of Drought and Flood in Shandong Province in Recent 45 Years Based on Standardized Precipitation Index[J].Research of Soil and Water Conservation,2021,28(02):149-154+162.
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Evolution Characteristics of Drought and Flood in Shandong Province in Recent 45 Years Based on Standardized Precipitation Index
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 02
Page number:
149-154+162
Column:
Public date:
2021-02-06
- Title:
- Evolution Characteristics of Drought and Flood in Shandong Province in Recent 45 Years Based on Standardized Precipitation Index
- CLC:
- P426.616
- DOI:
- -
- Abstract:
- In order to explore the evolution characteristics of drought and flood in Shandong Province, the monthly precipitation data of 25 national meteorological stations in Shandong Province in recent 45 years were used to calculate the standardized precipitation index(SPI)at monthly, seasonal and annual scales, the spatial and temporal characteristics of drought and flood in Shandong Province were analyzed by using drought flood frequency, ratio of drought/flood stations and drought/flood intensity. The results showed that:(1)the average frequency of rainfall and waterlogging in Shandong Province was higher than that of drought, but the frequency of drought and flood varied greatly in different regions and grades, and the drought and flood events were normal development trend;(2)the influence range of drought and flood in Shandong Province was roughly the same; in the 1970s, the drought and flood state in autumn was mainly normal, and in other periods, the drought and flood state in each season appeared alternately; the annual average frequency of rainfall and waterlogging in each season was higher than that of drought, but the average drought intensities of many years and each season were higher than the average rainfall and waterlogging intensities;(3)in general, the impact of drought was greater than that of rainfall in Shandong Province, but the intensity and range of rainfall and waterlogging in 1970s were obviously greater than that of drought; the influence range of autumn drought in 1980s was the largest, and that of winter waterlogging in 1980s was the largest. The spatial and temporal differences of drought and flood in Shandong Province are large. The impact of drought on the whole province is greater than that of rainfall and flood.
- References:
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Last Update:
2021-02-10