Characteristics of carbon flux in two biologically crusted soils in the Gurbantunggut Desert, Northwestern China

Auteur(s) et Affiliation(s)

SU, Y.-G.

Key Lab. of Biogeography and Bioresource in Arid Land, Xinjiang Inst. of Ecology and Geography, CAS, Urumqi, Chine

WU, L.

Key Lab. of Biogeography and Bioresource in Arid Land, Xinjiang Inst. of Ecology and Geography, CAS, Urumqi, Chine

ZHANG, Y.-M.

Key Lab. of Biogeography and Bioresource in Arid Land, Xinjiang Inst. of Ecology and Geography, CAS, Urumqi, Chine

Description :
The AA. investigated the daily carbon flux in moss- and cyanobacterial/lichen-crusted soils, as well as crust-removed soil (referred as bareland) in the Gurbantunggut Desert, Northwestern China from April to October 2010. They also investigated carbon flux in biologically crusted soils after 0, 2, 5, and 15 mm precipitation treatments. Carbon flux between crusted soil and bareland had no significant difference. The average carbon flux rate and total carbon production increased exponentially with the precipitation amount. This study indicates that biological soil crusts do not increase the respiration of soil, but increases the temperature dependence of soil carbon flux because of the higher microbial biomass than bareland.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2012, vol. 96, p. 41-48, nombre de pages : 8, Références bibliographiques : 37 ref.

Date :
2012

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

Langue :
Anglais