ABSTRACT:
The objective of this study is to integrate the Agricultural Nonpoint Source Pollution Model (AGNPS) and the technique of a geographic information system (GIS) to quantify erosion problems at the Bajun River Basin and the Tsengwen Reservoir Watershed in Taiwan. The estimated annual soil loss from the Bajun River Basin is about 259 t/ha and the Tsengwen Reservoir Watershed is about 903 t/ha. The annual sedimentation depth for the Tsengwen Reservoir is approximately 5.9 mm, which is not significantly different from the observed rate, but exceeds what is observed in the United States and in the Yellow River Basin. It is, therefore, necessary to prescribe appropriate soil and water conservation practices to control the volume of soil loss within acceptable (or tolerable) limits.
Footnotes
Kwong Fai A. Lo is a professor in the Department of Natural Resources at the Chinese Culture University, Hwa Kang, Yang Ming Shan, Taipei, Taiwan.
- Copyright 1995 by the Soil and Water Conservation Society
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