陡坡地應用植生鋪網之抗蝕性探討

A Study on the Steep Slope Erodibility Investigation of Applications Artificial Textile

許中立(Chung-Li Hsu) ； 陳婷婷(Ting-Ting Chen) ； 邱士恩(Shin-An Chiu)

《坡地防災學報》 13卷1期 (2014/06) Pp. 30-45

摘要

本研究乃運用日本多功能資材公司提供新研發之植生鋪網作為試驗資材，以國立屏東科技大學水土保持試驗區內之紅壤為試驗土壤，比較植生復育期與不同鋪網之密度(SP-45、SP-60)及坡度下(25°、35°、45°)的抗沖蝕性。最後試驗項目包括撒播百慕達草生長齡期對逕流量與土壤流失量的影響。因新研發植生鋪網有較佳的吸水與透氣性，能夠使植物復育前期有較佳的環境適合生長。試驗顯示，以室內人工模擬降雨試驗檢測植生鋪網SP-45、SP-60與裸露地，可發現有鋪設鋪網之逕流量與沖蝕量明顯較少，且SP-60較SP-45之效果更佳；植生復育的時間變長，植株的葉面能阻擋雨滴打擊，加上根系作用，發現逕流量增加，沖蝕量則並未隨著上升。

關鍵字

多功能植生鋪網 ； 土壤沖蝕 ； 植生復育 ； 室內降雨試驗

並列摘要

This study use multifunctional materials companies of new research and development artificial vegetation geo-textiles, which were produced in Japan, as this study detect materials. In addition, the red soil for testing was collected from the site of soil and water conservation in National Pingtung University of Science and Technology. And then to compare the soil erodibility of various planting vegetation repopulation period, the textiles of different grid density (SP-45 and SP-60) laying on the red soil surface as well as the soil erosion-proved experiment under different gradients (25°, 35° and 45°). Finally, the pilot project included the influence of Bermuda grass sowing Growth age on soil loss and runoff. Because the new artificial geo-textiles of multifunctional materials companies has better water absorption and permeability, so that it can provide better environment for plan growth of repopulation early. The results with indoor artificial rainfall simulator test for detection of artificial vegetation geo-textiles SP-45, SP-60 and bare ground, it can be significantly found that both artificial vegetation geo-textiles have less runoff and soil erosion amount than bare ground, and the effect of SP-60 better than SP-45. When planting vegetation repopulation period become longer, the plant foliage can block the raindrops hitting and with it roots action protect full soil, although the runoff increased but soil erosion amount was not rising with.

並列關鍵字

Multifunctional artificial vegetation geo-textiles ； Soil erosion ； Vegetation repopulation ； Indoor artificial rainfall simulator