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(Article of periodic en Anglais - 2013)

Document title

Critical topographic threshold of gully erosion in Yuanmou Dry-hot Valley in Southwestern China

Authors(s) and Affiliation(s)

DONG Y. (1 2) ; XIONG D. (1 2) ; SU Z. (1 2) ; LI J. (3) ; YANG D. (1 2) ; ZHAI J. (3) ; LU X. (3) ; LIU G. (1 2) ; SHI L. (4) ;
(1) Key Lab. of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu, CHINE
(2) Inst. of Mountain Hazards and Environment, CAS, Chengdu, CHINE
(3) Dep. of Environmental Engineering, Univ. of Information Technology, Chengdu, CHINE
(4) Inst. of Tropical Eco-agricultural Sciences, Yunnan Academy of Agricultural Sciences, Yuanmou, CHINE

Abstract

This study investigated gully morphology and the critical topographic threshold of permanent gullies in Yuanmou Dry-hot Valley. Data for 36 gully heads were derived from the gully digital elevation model created by high-precision real-time kinematic GPS (RTK GPS). A significant relationship between gully length and volume was found to exist, indicating that gully length can be used to estimate the gully erosion rate. Additionally, as vegetation coverage inside the gully increases, the gully morphology tends to be stable. The results indicate that collapse of the gully wall is the dominant process of gully erosion in Yuanmou Dry-hot Valley

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2013, vol. 34, no1 [pp. 50-59]

Bibliographic references : 32 ref.

Collation : 3 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1080/02723646.2013.778691

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27624499 : Permanent link - XML version
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