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(Article of periodic en Anglais - 2012)

Document title

Quantitative study on influences of terraced field construction and check-dam siltation on soil erosion

Authors(s) and Affiliation(s)

GAO H. (1) ; LI Z. (1 2) ; LI P. (2) ; JIA L. (3) ; ZHANG X. (2) ;
(1) Inst. of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Shaanxi, Yangling, CHINE
(2) Key Lab. of Northwest Water Resources and Environment Ecology of MOE, Univ. of Technology, Xi'an, CHINE
(3) Upper and Middle Yellow River Bureau, Yellow River Conservancy Commission of the Ministry of Water Resources, Xi'an, CHINE

Abstract

To study the influences of terraced field construction and check-dam siltation on soil erosion of a watershed, the AA. built a simplified watershed model for the Loess Plateau hilly-gully region including terraced fields, slope farmlands, steep-slope grasslands, and dam farmlands, and defined 3states of watershed (i.e., pioneer, intermediate, and climax stages, respectively). Then, the watershed soil erosion moduli at various stages were studied by using a revised universal soil loss equation. The results show that the pioneer and climax stages are the extreme states of watershed soil-and-water conservation and control. In the intermediate stage, the soil erosion modulus above the edge of gully exhibited an exponential decline along with the increase in terraced field area percentage, while the soil erosion modulus below the edge of gully exhibited a linear decline along with the increase in siltation heigh

Source

Article of periodic

published at : Journal of geographical sciences. Acta geographica sinica / ISSN 1009-637X

Editor : CHINE

Millesime : 2012, vol. 22, no5 [pp. 946-960]

Bibliographic references : 30 ref.

Collation : 6 fig., 9 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1007/s11442-012-0975-5

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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