[1]Sun Long,Jiang Xi,Han Jianqiao,et al.Changes and Causes of Mountain Torrent Disaster Risk on the Loess Plateau in the Past 30 Years[J].Research of Soil and Water Conservation,2024,31(04):241-247,257.[doi:10.13869/j.cnki.rswc.2024.04.022]
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Changes and Causes of Mountain Torrent Disaster Risk on the Loess Plateau in the Past 30 Years
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 04
Page number:
241-247,257
Column:
Public date:
2024-06-30
- Title:
- Changes and Causes of Mountain Torrent Disaster Risk on the Loess Plateau in the Past 30 Years
- CLC:
- P954
- DOI:
- 10.13869/j.cnki.rswc.2024.04.022
- Abstract:
- [Objective]The aims of this study are to reveal the temporal and spatial evolution characteristics of mountain torrent disaster risk and its influencing mechanism on the Loess Plateau over the past 30 years, and to provide a scientific basis for the development of comprehensive prevention and control strategies for mountain torrent disasters on the Loess Plateau. [Methods]Based on the data of rainfall, vegetation cover, population density and so on, the risk assessment system of mountain torrent disaster was established. By integrating GIS and analytic hierarchy process(AHP), the mountain torrent disaster risks on the Loess Plateau in 1990 and 2020 were comprehensively evaluated based on the risk distribution map of each driving factor. [Results](1)The high-risk areas were mainly distributed in the southwest, south and east of the Loess Plateau. These areas had the characteristics of high rainfall intensity, dense population, developed economy and large cultivated land area.(2)During the period from 1990 to 2020, the overall risks of mountain torrent disasters on the Loess Plateau increased, showing that the areas with high risk expanded to its surroundings on the original basis, among which the southeast of Shanxi Province, the northwest of Qinghai Province and the northeast of Inner Mongolia were the most obvious. [Conclusion]The increased rainfall intensity, population density and GDP are the main driving factors on the increase of mountain torrent disaster risks in the past 30 years. It is necessary to continuously strengthen the prevention and control of mountain torrent disasters caused by extreme rainfall.
- References:
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Last Update:
2024-06-30