Forest Plantation Harvesting Effects on the Runoff and Sediment Yield in the Miyun Water Reservoir Catchment, Beijing, China : Veränderungen im Natur- und Kulturhaushalt und ihre Auswirkungen : INTERPRAEVENT

2000

S. 119-129

7 Lit. Ang.

Unselbständiges Werk

200084986

Hydrological processes at different scales governed by interactions of rainfall input, soil hydraulic properties and antecedent moisture content, topographical and vegetal conditions play an important role in maintaining the biodiversity, landscape heterogeneity as well as fresh water supply for human and animals. In understanding such complicated phenomena, physically-based distributed parameter process model development is the current priority in the area of hydrological study. However, field monitoring is an indispensable step for validating and parameterizing the model. This paper presents six years monitoring results of forest plantation impacts on the runoff yield and five years on soil erosion from two natural slope plots with identical discharge instruments and soil erosion sampling method. One was whole-harvested in 1991 and herbicide has been applied since then and the other as control covered with black locust (Robinia pseudoacacia L.). Forst plantation harvesting was resulted in the event peak discharge increase from 11.8% to 1673.0% and total surface runoff between 6.9% to 1177.8% also be 40.0% to 11300% under different rainfall classes.