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Comparison of Soil Hydraulic Conductivity between Plantation Forest and Natural Forest Watersheds in the Lien-Hwa-Chi Area (Ⅰ)
|Other Titles:||Guelph Permeameter Method�|
The forest plantation areas in Taiwan are about 420 000 ha, which accounted for 20% of total Taiwan’s forest areas. In order to establishing locally eco-hydrological knowledge and implementing forest ecosystem management, it is necessary to understand the effect of these human disturbed forests on hydrological processes. Soil hydraulic conductivity is an essential parameter for many hydrologic models, because it is closely related to infiltration, soil water movement, flow pathways, and chemical transportation. The purpose of this study was to compare the difference in hydraulic conductivity between man-made forests and natural forests. The study area was located in the Lien-Hwa-Chi watershed No. 4 (5.86 ha) and No.5 (8.39 ha), where the dominant vegetations were China-fir man-made forests and natural broadleaved forests, respectively. The Guelph permeameter was applied to investigate soil hydraulic conductivity on ridge, hillslope, and valley locations in these sites. There was no significant differences in hydraulic conductivity between Lien-Hwa-Chi watershed No 4 and No. 5. In addition, there were significant similarities of hydraulic conductivity among ridge, hillslope, and valley locations. However, the average hydraulic conductivity at 20 cm soil depth was significantly obviously higher than that at 40 cm soil depth.
|Appears in Collections:||教師著作|
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