人工模拟降雨下砂姜黑土坡面产流产沙特征研究

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中图分类号 S157.1 文献标志码A 文章编号 1007-7731（2026）05-0063-06

DOI号 10.16377/j.cnki.issn1007-7731.2026.05.015

Research on runoff and sediment yield characteristics of Shajiang black soil slope underartificialsimulatedrainfall

Zhou Chao1，2 Li Wei³

（ 1 Anhui Intitute of Water Resources and Hydropower Research，Anhui Province （Ministry of Water Resources Huaihe River Water Conservancy Commission）， Bengbu 2330oo， China; （204 2 Anhui Key Laboratoryof Water Science and Smart Water Conservancy，Bengbu 2330oo， China; 3Anhui Huaihe River Water Resources Technology Co.，Ltd.， Bengbu 2330oo，China）

AbstractThisstudyinvestigated therunoffandsediment yield paternsof Shajiang black soil throughartificial simulated rainfall experiments under varying rainfall intensities （40， 6O，8O mm/h） and slope gradients （2∘，4∘，6∘，8∘） . The resultsshowed that the initialrunoff time wasnegativelycorrelatedwithboth rainfall intensityand slopegradient. Specifically，itfollowedabinarypolynomialfunction withrainfall intensityandapowerfunction withslope gradient.The runoffratechangedwithrainfalldurationas follws：itroserapidlyintheinitial stage，transitionedthroughannflection pointthat occurrd earlieron steeper slopes，andthen entered astablefluctuation phase where the amplitude increased with greater rainfall intensity. Under the rainfall intensity of 80mm/h ，the maximum runoff rate reached 3O L/min. Similarly， the sedimentyieldrateexhibitedarapid increase initially，passdanearlier inflectionpointonsteeperslopes，and then attainedaquasi-steady state during thestable fluctuationphase.Higherrainfallintensities led tomorepronounced oscilltions，andasthe erosion processapproached equilibrium，thesediment yieldrate tended to stabilize.The peak sediment yield was recorded at 1103g/min under an 8∘ slope and 80mm/h rainfall intensity. Furthermore， the regression equationsestablishedfor totalrunoffandsediment yield indicated thatslopegradient hadagreater influenceonrunoff volume thanrainfallintensity，whereas rainfalintensity exertedastronger efectonsediment yield thanslope gradient.

Keywordsartificialsimulatedrainfall;Shajiangblacksoil;runoffyieldcharacteristics;sedimentyieldcharacteristics

了解地表产流与产沙特点，对制定有效的水土保持措施，保护生态环境具有重要意义[1-2]。（剩余6073字）