Sediment Transport by Surface Wash and Throughflow at the Pasoh Forest Reserve, Negri Sembilan, Peninsular Malaysia

Publisher Website
Google Scholar
Abstract
Rates of sediment transport by surface wash and throughflow were measured at a virgin lowland rain forest site in northern Negri Sembilan, Peninsular Malaysia over a twelve month period. Two throughflow pits and 11 surface wash traps were installed on two hillslopes. Rates of suspended sediment transport at the wash trap sites ranged from 0.058 cm3/cm/yr to 0.735 cm3/cm/yr, with an average of 0.294 cm3/cm/yr. At all 11 of the wash trap sites suspended sediment transport was of far greater importance than the transport of solutes: on average, suspended sediment accounted for 83.3 % of total sediment transported and solutes 5.1 %. The remaining 11.6% comprised ash elements in litter washed downslope. It is suggested that the downslope transport of litter is a neglected denudational process. At both pit sites, sediment transport by surface wash was more important than lateral eluviation, accounting for 76.7 % of the total sediment transported at one pit site and 85 % at the other. The rates of suspended sediment transport by surface wash recorded at the Pasoh Forest Reserve are comparable with rates measured on forested slopes in West Africa, the Philippines and Java, but lower than rates recorded in Thailand.

This publication has 10 references indexed in Scilit: