Water erosion response to rainfall and land use in different drought-level years in a loess hilly area of China

Auteur(s) et Affiliation(s)

WEI, W.

State Key Lab. of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, CAS, Beijing, Chine

CHEN, L.

State Key Lab. of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, CAS, Beijing, Chine

FU, B.

State Key Lab. of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, CAS, Beijing, Chine

CHEN, J.

Inst. of Soil and Water Conservation, Gansu, Dingxi, Chine

Description :
In this study, 15 runoff plots were implemented in Dingxi, a typical loess hilly area of Gansu Province since 1986. Three typical years representing WY (wet year), NY (normal year) and DY (drought year) were firstly filtered based on the consecutive rainfall-erosion data and an aridity index. Then, water erosion dynamics involving five land uses (cropland, alfalfa, scrubland, woodland and grassland) in the three typical years were analyzed. Results and discussion about erosion control : namely, it is not possible to judge water erosion degree just from annual rainfall; more attention should be paid to the specific rainfall variables and distributions.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2010, vol. 81, n°. 1, p. 24-31, nombre de pages : 8, Références bibliographiques : 43 ref.

Date :
2010

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

Langue :
Anglais