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

Auteur(s) et Affiliation(s)

SHAO, Q.

State Key Lab. of Earth Surface Processes and Resource Ecology, Normal Univ., Beijing, Chine

Centre for Mined Land Rehabilitation, Sustainable Minerals Inst., Univ. of Queensland, Brisbane, Australie

GU, W.

State Key Lab. of Earth Surface Processes and Resource Ecology, Normal Univ., Beijing, Chine

DAI, Q.-Y.

State Key Lab. of Earth Surface Processes and Resource Ecology, Normal Univ., Beijing, Chine

MAKOTO, S.

State Key Lab. of Earth Surface Processes and Resource Ecology, Normal Univ., Beijing, Chine

LIU, Y.

Hebei Kexin Rocky Soil Slope Ecological Engineering Co. Ltd, Baoding, Chine

Description :
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 and decreasing erosion. Field studies were also conducted on a restored rock slope in Fengshan quarry, northeast Beijing, China, in both 2010 and 2011. It is shown that the geotextiles improved plant growth by providing favourable soil conditions. The geotextiles were less effective in 2011 than in 2010 as a result of their degradation over time. The jute mat was most effective, followed by polyester mat and polyester net. The jute mat degraded gradually and its role was replaced by that of vegetation. Thus the natural geotextile mat (jute mat) is preferred since it is more effective and more environmental friendly.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2014, vol. 116, p. 1-9, nombre de pages : 9, Références bibliographiques : 32 ref.

Date :
2014

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais