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Analysis of Changes and Causes of Mountain Torrent Disaster Risk in Sichuan Province in the Past 30 Years
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Yuan YUAN1, 2, Jian-qiao HAN3, Zhong-wu JIN1, 2, Chao GUO1, 2, Hong-xi LIU4
Water Resources and Power | 2023, 41(10) : 62 - 66
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Water Resources and Power | 2023, 41(10): 62-66
• HYDROLOGICAL FORECAST AND OPTIMAL SCHEDULING •
Analysis of Changes and Causes of Mountain Torrent Disaster Risk in Sichuan Province in the Past 30 Years
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Yuan YUAN1, 2, Jian-qiao HAN3, Zhong-wu JIN1, 2, Chao GUO1, 2, Hong-xi LIU4
Affiliations
  • 1.Changjiang River Scientific Research Institute of Changjiang Water Resources Commission of the Ministry of Water Resources, Wuhan 430010, China
  • 2.Key Laboratory of Ministry of Water Resources on River & Lake Regulation and Flood Control in Middle and Lower Reaches of Yangtze River, Changjiang River Scientific Research Institute, Wuhan 430010, China
  • 3.Institute of Soil and Water Conservation, Northwest A& F University, Yangling 712100, China
  • 4.Key Laboratory for Water and Sediment Science, Ministry of Education, Beijing Normal University, Beijing 100875, China
Published: 2023-10-25 doi: 10.20040/j.cnki.1000-7709.2023.20222254
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To explore the temporal and spatial distribution and attribution of mountain torrent disaster risk in Sichuan Province, the spatial distribution difference and high-risk areas of mountain torrent risk during 1990-2020 were studied by AHP and cluster analysis methods, and the changing characteristic and driving reason were investigated. The results show that the risk of mountain torrent disasters increased from the west to the east in Sichuan Province. High-risk areas mostly existed in areas with dense river networks and high exposure and vulnerability, such as Meishan, Zigong, Neijiang, Ziyang, Suining, Guangan and Nanchong. From 1990 to 2020, the risk of mountain torrents showed an increasing trend in Sichuan Province. The proportion of areas with high and above risk increased from 17% to 34%. Increased risk levels were concentrated in central Sichuan, and most of them were from moderately high and relatively high risk transformed into high risk. In the past 30 years, the risk of mountain torrents has shown a downward trend in Sichuan Province, while the greater GDP and population density had changed vulnerability and disaster prevention capacity, leading to increasing risk level of mountain torrents in local areas. The results can provide theoretical guidance and practical support for forecast and early warn in flood disaster and disaster prevention and mitigation in Sichuan Province.

mountain torrent disaster  /  temporal and spatial distribution  /  disaster prevention and mitigation  /  Sichuan Province
Yuan YUAN, Jian-qiao HAN, Zhong-wu JIN, Chao GUO, Hong-xi LIU. Analysis of Changes and Causes of Mountain Torrent Disaster Risk in Sichuan Province in the Past 30 Years[J]. Water Resources and Power, 2023 , 41 (10) : 62 -66 . DOI: 10.20040/j.cnki.1000-7709.2023.20222254
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Year 2023 volume 41 Issue 10
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20222254
  • Receive Date：2022-10-27
  • Online Date：2026-01-28
  • Published：2023-10-25
Article Data
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History
  • Received：2022-10-27
  • Revised：2022-12-19
Funding
Affiliations
    1.Changjiang River Scientific Research Institute of Changjiang Water Resources Commission of the Ministry of Water Resources, Wuhan 430010, China
    2.Key Laboratory of Ministry of Water Resources on River & Lake Regulation and Flood Control in Middle and Lower Reaches of Yangtze River, Changjiang River Scientific Research Institute, Wuhan 430010, China
    3.Institute of Soil and Water Conservation, Northwest A& F University, Yangling 712100, China
    4.Key Laboratory for Water and Sediment Science, Ministry of Education, Beijing Normal University, Beijing 100875, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20222254
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表12种不同金属材料的力学参数
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Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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