Event-based hydrology and sedimentation in paired watersheds under commercial eucalyptus and grasslands in the Brazilian Pampa biome

作     者：Ederson Diniz Ebling Jose Miguel Reichert Jhon Jairo Zuluaga Pelaez Miriam Fernanda Rodrigues Mirian Lago Valente Rosane Barbosa Lopes Cavalcante Paolo Reggiani Raghavan Srinivasan éderson Diniz Ebling;José Miguel Reichert;Jhon Jairo Zuluàga Peláez;Miriam Fernanda Rodrigues;Mirian Lago Valente;Rosane Barbosa Lopes Cavalcante;Paolo Reggiani;Raghavan Srinivasan

作者机构：Soils DepartmentUniversidade Federal de Santa MariaAvenida Roraima1000 Bairro CamobiSanta MariaRS97105-900Brazil Corporacion Colombiana de Investigacion Agropecuaria(AGROSAVIA)Centro de Investigacion NataimaEspinalColombia CMPC Celulose RiograndenseRua Sao Geraldo1680GuaibaRS92500-000Brazil Department of Civil EngineeringUniversity of SiegenPaul Bonatz Strasse 9-11Siegen D57068Germany Department of Ecology and Conservation BiologyTexas A&M University(TAMU)534 John Kimbrough Blvd.Room 305College StationTX77843-2120USA Current address:Instituto Tecnologico Vale.Rua Boaventura da Silva955UmarizalBelemPABrazil. 

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

年 卷 期：2021年第9卷第2期

页      面：180-194页

核心收录：

学科分类：08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 

基　　金：This study was financed in part by the“Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior”(CAPES)-Finance Code 001 Fapergs(“Fundacao de Amparoa Pesquisa do Estado do Rio Grande do Sul”) CMPC Celulose Riograndense.JMR thanks CNPq(Brazilian Council for Scientific and Technological Development)for the research fellowship 

主　　题：Southern grasslands Paired watersheds Runoff Erosion LISEM 

摘      要：Ecological and hydrological impacts are expected when watersheds are under commercial *** this study we evaluated event-based hydrology and sedimentation in paired watersheds under commercial eucalyptus and grasslands ***,suspended sediment concentration,and sediment production were measured and simulated with the Limburg Soil Erosion Model(LISEM)in paired hydrographic watersheds located in southern Brazil;one occupied with 7-years old Eucalyptus saligna plantation(forest watershed-FW;0.83 km^(2))and another Pampa biome with native and exotic grasses used for beef cattle production(grassland watershed-GW;1.10 km^(2)).The effect of rainfall on hydrological and sedimentological variables was more evident in GW compared with *** shape of the hydrograph was steepest in GW,with rapid,marked increase and decrease in flow during *** parameters changed for model calibration in FW and GW were soil saturated hydraulic conductivity,initial soil moisture,and Manning roughness coefficient,whereby the statistical performance was classified as good(NSE0.75).Fourteen events different from those used in the calibration process were validated for FW and GW,with NSE index classified as“goodand“very goodfor *** study shows limitations of LISEM in calibrating and validating the sediment yield for individual events due to the spatial variability of factors controlling soil *** validated modeling results of this study may be applied in simulating soil and crop scenarios in watersheds cultivated with commercial forest and grassland for grazing.