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Canopy Storage Implications on Interception Loss Modeling

American Journal of Plant Sciences 2014年第20期5卷 3032-3048页

作者： Cesar Véliz-Chávez Carlos Alberto Mastachi-Loza Enrique González-Sosa Rocio Becerril-Pina norma maricela ramos-salinas Facultad de Ingenieria Centro Universitario S/NCerro de las CampanasSantiago de QuerétaroUniversidad Autonoma de QuerétaroQuerétaroMéxico Centro Interamericano de Recursos del Agua Facultad de Ingeniería Cerro de CoatepecCiudad UniversitariaUniversidad Autónoma del Estado de México TolucaToluca de LerdoMéxico Departamento de Tecnología Ciencia Arte y Humanidades Blvd Villas del Meson No.1000 col.Provincia JuriquillaSantiago de QuerétaroUniversidad del Valle de México Campus QuerétaroQuerétaroMéxico Division de Estudios de Posgrado Facultad de Contabilidad y AdministracionUniversidad Autonoma de QuerétaroCerro de las Campanas S/N CentroQuerétaroMéxico

A rainfall interception methodology was implemented in a deciduous Ficus benjamina (L.) tree to evaluate the interception loss, as well as the dynamics on canopy storage capacity (S) and free through fall (ρ). Measurements of gross precipitation (Pg), through fall and meteorological data were recorded every 5 minutes. Nineteen individual storms from summer to autumn 2005, and twenty one in spring to autumn, 2006 were analyzed. For the studied period, 151.59 mm and 203.35 mm of rainfall occurred on 2005 and 2006 respectively. Canopy interception was 59.46% and 70.98% of Pg for the first and second year. Throughfall data recorded during 2005 were ?38.14% (of Pg) and 27.21% (of Pg) for 2006. The throughfall and gross precipitation relationship yielded S = 1.50 mm for the 2005 data. In 2006 storms were analyzed in detail, where ρ and S varied in a range from 0.10 to 0.64 and from 1.00 to 2.03 mm, respectively. Moreover, application of the Rutter and Gash models with two years of rainfall data (2005-2006) from the study area indicated an underestimation and overestimation of 69% and 88%, respectively. The slightly best prediction of the interception loss was obtained with the Gash model. Yet S and ρ change significantly due to wind speed, temperature, rainfall intensity and seasonal vegetation development.

关键词： Interception Storage Capacity Throughfall Gash Model

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