Comparison of the influences of vegetation stem parameters on hydraulic variables and sediment transport capacity

作     者：Hongli Mu Suhua Fu Hongli Mu;Suhua Fu

作者机构：Department of Geography and Spatial Information TechniquesCenter for Land and Marine Spatial Utilization and Govemance ResearchNingbo UniversityNingbo315211PR China Bejing Key Laboratoryof Evironmental Remote Sensingand Dgital CitiesFacultyof Gegraphical Scence Beijing Nomal UniversityBejing1000875 China 

出 版 物：《International Soil and Water Conservation Research》 (国际水土保持研究（英文）)

年 卷 期：2023年第11卷第1期

页      面：135-144页

核心收录：

学科分类：0710[理学-生物学] 08[工学] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0815[工学-水利工程] 081502[工学-水力学及河流动力学] 0901[农学-作物学] 0833[工学-城乡规划学] 0713[理学-生态学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：the Natural Science Foundation of Zhejiang Province(No.Q21D010016) the State Key Program of the National Natural Science Foundation of China(No.41530858) the National Natural Science Foundation of China(No.41571259) the CAs"Light of West China"programme 

主　　题：Hydraulic variables Stem arrangement Stem cover Stem diameter Transport capacity 

摘      要：The hydraulic variables(Hv)and sediment transport capacity(Tc)of overland flow have changed immensely due to large-scale ***,research comparing the influences of stem pa-rameters(diameter,cover,and arrangement)on Hv and Tc is *** objectives of this study were to explore and compare the influences of stem parameters on Hv and *** on three treatment groups with varying stem diameters,covers,arrangements,flow discharges and slopes were collected in this *** increasing stem diameter,Hv and Tc increased;Hv included the Reynolds and Froude numbers,flow velocity(v),shear stress(τ),stream power(Ω),and unit stream power(ω).However,the trend of the Darcy-Weisbach friction coefficient(f)was *** and Tc were significantly influenced by stem diameter and *** effect of stem diameter on Hv and Tc was greater than the effects of cover and *** cover as a variable could not be used to adequately estimate the Tc when there were various stem diameters.A new exponential equation involving stem cover and stem diameter was demonstrated to be an appropriate predictor of *** diameter and arrangement had no obvious influence on the relationship between Tc and v,and v as an indicator could explain the effect of stem parameters on Hv and *** result could illustrate why the variables,including v,were able to predict Tc under vegetation stem and litter cover.