Chinese researchers have conducted a new study on the spatio-temporal distribution of snowmelt floods and disaster risk assessments in China's northwestern region, holding promise for disaster prevention and control of this region.
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Based on the snowmelt runoff simulated by a model with related data over the 1948-2022 period, the study constructed a snowmelt flood identification threshold model and a disaster risk assessment framework. It systematically analyzed the evolution characteristics and disaster risk distribution of snowmelt floods in Northwest China.
The results indicated that the snowmelt runoff in northwest China showed a significant increasing trend and exhibited a spatial pattern of being more abundant in the northwest and southwest edges while less in the country's central and eastern regions.
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Based on a comprehensive assessment of hazard, exposure, vulnerability and adaptability, high and very high-risk areas account for 15.5 percent of the region.
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