Spatial-temporal Characteristics of Rainstorm, Flood Disaster Losses and Disaster-inducing Factors in Sichuan Province of China

Xiehui Li, Lei Wang, Xiaoran Chen

2021

Abstract

Analysis of spatial-temporal distributions and variation trend of meteorological disasters and disaster-inducing factors can shed new light on meteorological disaster prevention and control, disaster relief planning and adaptation to climate change. Rainstorm and associated flood disasters are among the most frequent and serious meteorological disasters in Sichuan Province of China which spans part of the Qinghai-Tibet Plateau. In this study, daily precipitation data at 42 weather stations in Sichuan Province from 1973 to 2012 were collected and utilized along with statistics on rainstorms, flood disasters and socioeconomic status of 21 cities and prefectures from 1985 to 2012. Indicators characterizing the losses caused by rainstorm and flood disasters and rainstorm features were chosen. Critical disaster-causing precipitations were determined using the percentile method. Thus, a comprehensive analysis was conducted over the spatial-temporal distribution of the losses caused by rainstorms, flood disasters and the disaster-inducing factors in Sichuan Province, with a thorough characterization of precipitation during the rainstorms. The results showed from 1985 to 2012, the loss of crop area caused by the rainstorm and flood disasters and the loss rate showed a large fluctuation. The increasing trend of annual average rainstorm intensity was more obvious than that of the annual average rainstorm frequency. In the context of global warming, although the overall precipitation of Sichuan decreases, both the probability and intensity of extreme precipitation events increase. The annual average rainstorm volume and annual average rainstorm frequency shared similar spatial distribution patterns in the past 40 years. The overall frequency and the frequency of rainstorm processes of five intensity grades decreased from east to west. The frequencies were much higher in the basin of eastern Sichuan than in the mountainous south-western region and in the north-western plateau. The smallest frequency was found in the plateau of north-western Sichuan. Within the basin, the frequency of rainstorm intensity in the west was higher than that in the east.

Paper Citation

in Harvard Style

Li X., Wang L. and Chen X. (2021). Spatial-temporal Characteristics of Rainstorm, Flood Disaster Losses and Disaster-inducing Factors in Sichuan Province of China. In Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE, ISBN 978-989-758-560-9, pages 43-57

in Bibtex Style

@conference{wre21,
author={Xiehui Li and Lei Wang and Xiaoran Chen},
title={Spatial-temporal Characteristics of Rainstorm, Flood Disaster Losses and Disaster-inducing Factors in Sichuan Province of China},
booktitle={Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE,},
year={2021},
pages={43-57},
publisher={SciTePress},
organization={INSTICC},
doi={},
isbn={978-989-758-560-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE,
TI - Spatial-temporal Characteristics of Rainstorm, Flood Disaster Losses and Disaster-inducing Factors in Sichuan Province of China
SN - 978-989-758-560-9
AU - Li X.
AU - Wang L.
AU - Chen X.
PY - 2021
SP - 43
EP - 57
DO -