[1]LI Yimin,LI Yuhao,ZHAO Zhifang.Assessment on Susceptibility of Debris Flow in Lushui Based on the Certain Factor Model[J].Research of Soil and Water Conservation,2019,26(04):336-342.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 04
Page number:
336-342
Column:
Public date:
2019-06-11
- Title:
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Assessment on Susceptibility of Debris Flow in Lushui Based on the Certain Factor Model
- Author(s):
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LI Yimin1,2, LI Yuhao1, ZHAO Zhifang1
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1. College of Resources, Environment and Earth Science, Yunnan University, Kunming 650500, China;
2. Tableland Mountain Hazards and Environment Research Center, Yunnan Institute of Geography, Kunming 650223, China
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- Keywords:
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debris flow disaster; susceptibility assessment; certain factor model; Lushui City
- CLC:
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P642.23
- DOI:
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- Abstract:
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Lushui City, Nujiang State was taken as the study area, where debris flow occurs frequently. Nine impact factors including slope, elevation, river, road, lithology, fault, precipitation, NDVI and land use were selected to build the susceptibility assessment system. The certain factor model (CF model) was used to evaluate the susceptibility, result of which can be divided into 4 areas of extremely high susceptibility, high susceptibility, middle susceptibility and low susceptibility. The results showed that the events of debris flow occurred in the area which had a susceptibility above high accounted for 95.32% of the total debris flow events, the correct rate of susceptibility evaluation results reached up to 81.99%, indicating that selected indices were reasonable and CF model was practicable in susceptibility assessment. The high susceptibility area of debris flow in Lushui City was also the distribution area where settlements were concentrated. Therefore, the evaluation results could provide the reference for debris flow disaster prevention and mitigation in Lushui City.