Abstract
Research on the poverty risk caused by geological disasters in disaster-prone areas is a useful exploration to coordinate social economic development with disaster prevention and reduction, and is of great significance to the regional sustainable development. Based on statistical data and spatial data, this paper takes Sichuan Province as the typical research area. Remote sensing and geographic information technology are used to study the poverty risk caused by disasters based on the quantitative evaluation of geological disasters risk and regional development level. The spatial differentiation characteristics of poverty risk caused by disasters are explored on the 1km × 1km grid scale. The results indicate that (1) the overall risk of geological disasters in Sichuan Province is relatively high, with high and relatively high risk areas accounting for more than 40% and low and relatively low risk areas accounting for less than 30%. The risks in Mountain and Ravine Areas are significantly higher than other areas. (2) The regional development level in Sichuan Province is relatively high, but with significant spatial differences. The development level of high-altitude areas and remote mountainous areas is quite different from that of the Chengdu Plain in the middle Sichuan Province. The uneven development in the east, middle, and west is a prominent problem. (3) The poverty risk caused by disasters is high, and the spatial pattern presents a characteristic of "high in the west and low in the east" with high positive spatial correlation. High-High Cluster Areas are mainly distributed in western and southwestern Sichuan. Low-Low Outlier Areas are mainly distributed in Chengdu Plain and Hilly Areas of Sichuan Basin. High-Low Outlier and Low-High Outlier Areas occupy a relatively small percentage with scattered distribution. This paper provides some theoretical support for policy formulation and management of coordinated development of regional socioeconomic and ecological environment.
Highlights
IntroductionLooking back on the history of world development, natural disasters, diseases and epidemics have always been accompanied by the development of human society, resulting in a large number of casualties and heavy economic losses (Li et al 2020)
This paper is taking Sichuan Province as an research interest, and construct a geological disaster poverty risk evaluation model based on the relationship between disasters and regional development. the paper quantitatively studies the poverty risk caused by disasters and its geospatial pattern in Sichuan Province, and provide a theoretical basis for coordinated management and administration of geological disasters and relative poverty
Based on the evaluation of geological disaster risk and regional development, the poverty risk caused by disasters in the study area was calculated. and the natural breakpoint method was used to divide the risk of poverty into 5 grades: High, Relatively high, Medium, Relatively low, and Low (Figure 5)
Summary
Looking back on the history of world development, natural disasters, diseases and epidemics have always been accompanied by the development of human society, resulting in a large number of casualties and heavy economic losses (Li et al 2020). With complex and diverse geographical environments, the unique energy gradient in the mountain area usually induced geological disasters such as debris flow, landslide and collapse, causing serious loss of people’s lives and property accompany by restricting regional development (Cui 2014). The economic development of mountain areas is lagging. China before 2020 are in mountain areas, where low-income people are concentrated. The fragile ecological environment, frequent disasters and backward social as well as economic development have led to 20% of China’s poor farmers being impoverished caused by disasters, which is ranking second among the factors causing poverty. The governance of relative poverty will focus on the work of agriculture, rural areas and farmers
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