The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China

doi:10.1007/s11069-021-04577-0

	The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China
	Sun, Liying 1,4; Ma, Bingjuan 2; Pei, Liang 1; Zhang, Xiaohang 1,3; Zhou, John L.4
刊名	NATURAL HAZARDS
	2021-02-15
页码	23
关键词	Human activities index Flash flood Rainfall-induced landslide hazard Rainfall-induced debris flow hazard Spatiotemporal variation
ISSN号	0921-030X
DOI	10.1007/s11069-021-04577-0
通讯作者	Sun, Liying(sunliying@igsnrr.ac.cn)
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.
资助项目	Open Research Fund of Changjiang River Scientific Research Institute of Changjiang Water Resources Commission[CKWV2015227/KY] ; National Natural Science Foundation of China[41977069]
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000618160600006
资助机构	Open Research Fund of Changjiang River Scientific Research Institute of Changjiang Water Resources Commission ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/160665]
专题	中国科学院地理科学与资源研究所
通讯作者	Sun, Liying
作者单位	1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Henan Polytech Univ, Inst Resources & Environm, Jiaozuo 454000, Henan, Peoples R China 3.Beijing Forestry Univ, Coll Soil & Water Conservat, Beijing 100083, Peoples R China 4.Univ Technol, Sch Civil & Environm Engn, 15 Broadway, Sydney, NSW 2007, Australia
推荐引用方式 GB/T 7714	Sun, Liying,Ma, Bingjuan,Pei, Liang,et al. The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China[J]. NATURAL HAZARDS,2021:23.
APA	Sun, Liying,Ma, Bingjuan,Pei, Liang,Zhang, Xiaohang,&Zhou, John L..(2021).The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China.NATURAL HAZARDS,23.
MLA	Sun, Liying,et al."The relationship of human activities and rainfall-induced landslide and debris flow hazards in Central China".NATURAL HAZARDS (2021):23.