Effect of grazing on wind driven carbon and nitrogen ratios in the grasslands of Inner Mongolia

Auteur(s) et Affiliation(s)

HOFFMANN, C.

Inst. of Soil Landscape Research, Leibniz-Centre for Agricultural Landscape Research, Muencheberg, Allemagne

FUNK, R.

Inst. of Soil Landscape Research, Leibniz-Centre for Agricultural Landscape Research, Muencheberg, Allemagne

LI, Y.

Inst. of Agricultural Environment and Sustainable Research, Chinese Academy of Agricultural Science, Beijing, Chine

SOMMER, M.

Inst. of Soil Landscape Research, Leibniz-Centre for Agricultural Landscape Research, Muencheberg, Allemagne

Description :
Wind erosion and dust storms are common phenomena in the semi-arid Xilingele grassland (Inner Mongolia) and contribute considerably to matter balances. Based on wind erosion measurements in spring 2005 and 2006 the organic carbon and total nitrogen contents of dust were analyzed to determine the contribution of wind erosion processes on C- and N-ratios to the grasslands. The great range of dust emission and deposition at the different grazing intensities underlines the sensibility of the grassland. The 2 years of measurement show the high annual variability of dust storm processes. This variability shows that single very strong events can determine the net balance of a whole year.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2008, vol. 75, n°. 2, p. 182-190, nombre de pages : 9, Références bibliographiques : 57 ref.

Date :
2008

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

Langue :
Anglais