气候变化领域集成服务门户(CCPortal): The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China

CCPortal

DOI	10.1007/s11069-021-04577-0
	The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China
	Sun L.; Ma B.; Pei L.; Zhang X.; Zhou J.L.
发表日期	2021
ISSN	0921030X
起始页码	147
结束页码	169
卷号	107 期号:1
英文摘要	Human activities have been recognized as one of the significant influencing factors on natural hazard, yet studies of quantitative relationship between human activities and natural hazard have been limited. The relations of human activities and hazards (landslide and debris flow) induced by heavy rainfall are quantitatively analyzed in this study and suggestions are provided for the integrated hazard mitigation management in the study area of Central China. The results show that human activities index (HAI) is an effective indicator to characterize spatiotemporal changes of human activities. The relations of rainfall-induced landslide, debris flow hazards and human activities are significant as shown in spatial distribution. The probability of rainfall-induced landslide, debris flow hazards is highly correlated with the intensity of human activities and the changes of HAI. However, in terms of temporal relations, human activities have more direct impact on rainfall-induced landslide hazard than on rainfall-induced debris flow hazard, as the frequency of landslide hazard shows a 2-year delay with HAI changing, in general, according to the cross-wavelet transform analysis. In comparison, no significant correlating period is shown between the changing human activities and the frequency of rainfall-induced debris flow hazard. Specifically, there are three types of time relationship between the changing human activities and rainfall-induced landslide, debris flow hazards in the affected counties: (1) concurrent changing, accounting for 30% of landslide and 18% of debris flow; (2) lagging relationship, accounting for 54% of landslide and 30% of debris flow; (3) no direct relationship, accounting for 16% of landslide and 52% of debris flow. The results in this study suggest that HAI is a simple and effective index for the local governments to manage human impacts on rainfall-induced landslide and debris flow hazards, and integrated prevention measures are suggested to be executed when HAI reaches 0.072. In addition, the types of human activities also impact landslide, as the ratio of Economy factor to Land use factor (E/L) is significantly (P < 0.05) higher in counties with concurrent relationship of changing human activities and frequency of rainfall-induced landslide hazard. The results should assist the policy-making for integrated mitigation of rainfall-induced landslide and debris flow hazards at local/regional level, while balancing economic development and natural hazard. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature.
关键词	Flash flood Human activities index Rainfall-induced debris flow hazard Rainfall-induced landslide hazard Spatiotemporal variation
英文关键词	debris flow; flash flood; hazard assessment; human activity; landslide; precipitation intensity; spatiotemporal analysis; China; Indicator indicator
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206590
作者单位	Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China; College of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China; School of Civil and Environmental Engineering, University of Technology, Sydney, 15 Broadway, Sydney, NSW 2007, Australia
推荐引用方式 GB/T 7714	Sun L.,Ma B.,Pei L.,et al. The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China[J],2021,107(1).
APA	Sun L.,Ma B.,Pei L.,Zhang X.,&Zhou J.L..(2021).The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China.Natural Hazards,107(1).
MLA	Sun L.,et al."The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China".Natural Hazards 107.1(2021).