Effectiveness of geotextile mulches for slope restoration in semi-arid northern China

Shao, Qi, Gu, Wei, Dai, Quan-yu, Makoto, Saito and Liu, Yang (2014) Effectiveness of geotextile mulches for slope restoration in semi-arid northern China. Catena, 116 1-9. doi:10.1016/j.catena.2013.12.006


Author Shao, Qi
Gu, Wei
Dai, Quan-yu
Makoto, Saito
Liu, Yang
Title Effectiveness of geotextile mulches for slope restoration in semi-arid northern China
Journal name Catena   Check publisher's open access policy
ISSN 0341-8162
1872-6887
Publication date 2014
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.catena.2013.12.006
Open Access Status
Volume 116
Start page 1
End page 9
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2014
Language eng
Abstract In semiarid areas, slope restoration is usually hampered by high rainfall and temperature variability. These may cause severe erosion and slope instability, also environmental stresses, such as long-term drought and temperature extremes that lead to revegetation failure. In this study, three types of geotextiles including jute mat (JM), polyester mat (PM) and polyester net (PN) were installed on slopes and their effects on erosion control and vegetation growth were investigated by both laboratory and field experiments. The results of rainfall simulation experiments on laboratory plots showed that JM, PM and PN could delay the time to runoff, reducing runoff by 62.1%, 57.7% and 16.6%, and decrease erosion by 99.4%, 98.5% and 5.5%, respectively. Field studies were also conducted on a restored rock slope in Fengshan quarry, northeast Beijing, China, in both 2010 and 2011. Results indicated that JM, PM and PN could increase soil moisture by 54.5%, 36.3% and 18.7%, respectively, and provide more moderate soil temperatures that facilitate vegetation growth. The geotextiles were less effective in 2011 than in 2010 as a result of their degradation over time. Slope stability and plant growth, however, were not affected due to the developed vegetation cover. Thus geotextiles could protect slopes by preventing erosion and creating favourable soil conditions for revegetation, especially in the initial stage of slope restoration, and the natural geotextile mat (jute mat) is preferred since it is more effective and more environmental friendly.
Keyword Erosion control
Jute mat
Polyester mat
Polyester net
Soil condition
Vegetation growth
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Mined Land Rehabilitation Publications
Official 2015 Collection
 
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