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Study on the Application of Vegetation Engineering on Steep Landslides
Stake and fence
The area of landslides and denudations caused by 921 earthquakes in 1999 were estimated 15977 hectares in central Taiwan. The vegetation on the landslides was destroyed seriously. Additional soil erosion and debris flow may happen when heavy raining if the slope is not protected. The purpose of this study was to evaluate the efficiency of several vegetation engineering methods, including stake and fence, seeding with adhesive, net covering, and stone pavement on the restoration of landslides. The obtained results showed the best plant recovery was in stone pavement plots. Stake and fence plots had highest resistance to soil erosion. The stake and fence with direct seeding was the best method. In addition, eight landslides at Nanto County were selected to investigate the relationship between dominant plant species and the environmental parameters. The results indicated a strong relationship between pant community structure and habitat environment and the aspect. In addition to vegetation engineering mentioned above, the introduction of herbaceous and woody plant seeds can accelerate the plant succession and the restoration of landslides.
|Appears in Collections:||土壤環境科學系|
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