Abstract

Studies of the role of combined vegetation cover and catchment characteristics on base flow condition are required to address the controversy of correlation between vegetation and hydrological properties. Objectives of the research were: 1) to assess the hydrological role of vegetation on baseflow condition; and 2) to study the influence of vegetation cover in relation to catchment characteristics on the baseflow. Field survey, digital filter method, remote sensing technique, and statistical analysis were used to derive and assess the correlation among variables. Results of the research were: 1) a negative significant correlation between vegetation cover and baseflow recession coefficient, despite the fact that it is not a single factor and related to various catchment characteristics; 2) vegetation cover is not a single factor in determining the baseflow characteristics, since it also involves drainage density and infiltration rate.

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