基于熵指数法的黄河龙羊峡一积石峡山洪致灾因子分析

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关键词：山洪灾害；致灾因子；熵指数法；权重；黄河龙羊峡一积石峡区间；青海省中图分类号：TV62;TV882.1 文献标志码：A doi：10.3969/j.issn.1000-1379.2025.07.002引用格式;，隆坤，郭要辉，等.基于熵指数法的黄河龙羊峡—积石峡山洪致灾因子分析[J].人民黄河，2025，47（7）：8-12，19.

Analysis of Flash Flood Causing Factors in the Longyangxia-Jishixia Section of the Yellow River Based on Entropy Index Method

HU Shaowei1，²，，LONG Kun2 ，GUO Yaohui²， XU Yaoqun1， ZHANG Zhiwei² （1.School of Water Conservancy and Transportation， Zhengzhou University， Zhengzhou 45Ooo1， China; 2.School of Civil Engineering，Chongqing University，Chongqing 40oO45，China）

Abstract：Duetoisomplexterrandspecalcmate，QnghaiProvinceispronetosudnaddsructiveountainfloosoderto provideabasisforthemonitoingandpreventionofountaifloodsintheegion，takingtheLongangia-Jishixiasctioofteprea cheoftheYelloRiverinQingaiProvince，heremoutainfooddisasterswereelativelysevere，astesudyraOinfuencincto of moutaiflooddisasterswereinillyseletedBasedonthataof11istorcalflooddisasterpointsinthestudyareafrom958to 2000，fourfactsioelaoseeadoghearselotesTmangsiienctoai fied.GISspatialaalysistecholowasusedtobtainthasifeddataofthesixifuecingfactors.Thentropdexmetodwasadot edtocalculateteweightsofachfactorandidentiftheaindisaster-causingfactos.Theeseachsultsshothatelevatioalpre cipitation，terainroughs，Iistacefroheiverouse，andaspectaeesastercausingfactosfoutainflosthe studyarea（withthe weightsof0.5716，0.1448，0.1079，0.0948，0.0719and0.0090respectively），amongwhich，elevationaual precipitationndinousaretindisastecausinctorsAoigtofaiofteainisasteaingfctor， （2 91.30% of the historical mountain flood disasters in the study area occur in the areas with an elevation lower than 3 091 m， 99.14% occur in the areas with an annual precipitation greater than 317 mm，and 98.26% occur in the areas with a terrain roughness less than 1.10.

Keywords：mountainflooddisaster；disaster-causingfactor;EntropyIndexMethod；weight;ongangxia-JishiiasctionofelowRiver; Qinghai Province

0 引言

青海省是黄河上游生态屏障，但因地形复杂、气候特殊而山洪灾害突发性强、破坏力大。（剩余6158字）