Linking drought indices to impacts in the Liaoning Province of China
Hydrological processes and water security in a changing world - Hydrological Processes and Water Security in a Changing World, Beijing, China, 6–9 November 2018(2020)
Abstract
Abstract. Drought is an inherent meteorological characteristic of
any given region, but is particularly important in China due to its monsoon
climate and the “three ladder” landform system. The Chinese government has
constructed large-scale water conservation projects since 1949, and
developed drought and water scarcity relief frameworks. However, drought
still causes huge impacts on water supply, environment and agriculture.
China has, therefore, created specialized agencies for drought management
called Flood Control and Drought Relief Headquarters, which include four
different levels: state, provincial, municipal and county. The impact
datasets they collect provide an effective resource for drought
vulnerability assessment, and provide validation options for
hydro-meteorological indices used in risk assessment and drought monitoring.
In this study, we use the statistical drought impact data collected by the
Liaoning province Drought Relief Headquarter and meteorological drought
indices (Standardized Precipitation Index, SPI and Standard Precipitation
Evaporation Index, SPEI) to explore a potential relationship between drought
impacts and these indices. The results show that SPI-24 and SPEI-24 are
highly correlated to the populations that have difficulties in obtaining
drinking water in four out of the six cities studied. Three impacts related
to reservoirs and the availability of drinking water for humans and
livestock exhibit strong correlations with SPI and SPEI of different
accumulated periods. Results reveal that meteorological indices used for
drought monitoring and early warning in China can be effectively linked to
drought impacts. Further work is exploring how this information can be used
to optimize drought monitoring and risk assessment in the whole Liaoning
province and elsewhere in China.
MoreTranslated text
Key words
drought,liaoning province
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