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Abstract
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Article Information:
Determination of Soil Erodibility Index for Taiwan Mountainous Area
Jih-Jang Huang, Chin-Ping Lin and Yu-Min Wang
Corresponding Author: Jih-Jang Huang
Submitted: August 10, 2012
Accepted: September 24, 2012
Published: May 01, 2013 |
Abstract:
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Rainfall in Taiwan mainly concentrates in the period of typhoons and torrential storms. In this period the soil severely erodes due to the frail geology, steep gradient and easily weathered parent rock. Currently, the Universal Soil Loss Equation (USLE) is used to estimate soil erosion amount in Taiwan. Although it is regarded as the reference, its results are often inconsistent with the actual situation because the application conditions show great difference. Therefore, an alternative to the USLE is necessary for Taiwan. This study focused on 25 main basins in the mountainous area of Taiwan from which 69 experimental sites were established; 20 in the north, 11 in the center, 21 in the south and 17 in the east. The agency of Soil and Water Conservation Technical Specifications table, soil test in the experimental site and on-site measurements of erosion and redeposition were used to determine soil erodibility index (Km). The results shows that most Km obtained in the north areas were smaller than those from the specification, while Km in the rest of the areas varies without a regular pattern. It was concluded that the Southern areas were more susceptible to soil erosion because of the larger indexes.
Key words: Soil erosion, soil Erodibility index, Taiwan mountainous area, universal soil loss equation, , ,
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Cite this Reference:
Jih-Jang Huang, Chin-Ping Lin and Yu-Min Wang, . Determination of Soil Erodibility Index for Taiwan Mountainous Area. Research Journal of Applied Sciences, Engineering and Technology, (17): 4343-4348.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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