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Study on the correlation between deforestation and flood occurrence: an analysis based on Lasso regression

Hanyue Liu, Tengfei Meng, Junchao Zhang, Zhengtao Liao, Fuyun Chen*

Abstract


Flood is a natural phenomenon in which the water volume of rivers and lakes increases rapidly or the water level rises suddenly due
to natural factors such as heavy rain, melting ice and snow, and storm surges. As a natural disaster with strong suddenness and wide impact,
it poses a serious threat to human society. Based on historical flood event data, this paper focuses on the study of the multi-level risk warning
system of flood disasters, aiming to improve the response capability and disaster reduction efficiency of flood events. Through Lasso regression and cross-validation technology, five key factors closely related to flood occurrence are screened out-”deforestation, climate change, silt
deposition, agricultural practice and insufficient planning”. The role mechanism of these factors in causing floods is further analyzed, and
scientific suggestions and optimization measures for early prevention of floods are proposed, in order to provide data support and theoretical
basis for the formulation of disaster prevention and mitigation policies.

Keywords


flood disaster; risk warning; Lasso regression; deforestation; disaster prevention and mitigation

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References


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DOI: http://dx.doi.org/10.18686/ag.v8i4.13862

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