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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Carbon fixation by biological soil crusts following revegetation of sand dunes in arid desert regions of China : A four-year field study

Auteur(s) et Affiliation(s)

LI, X.R.
Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Inst., Chinese Academy of Sciences, Lanzhou, Chine
ZHANG, P.
Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Inst., Chinese Academy of Sciences, Lanzhou, Chine
SU, Y.G.
Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Inst., Chinese Academy of Sciences, Lanzhou, Chine
JIA, R.L.
Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Inst., Chinese Academy of Sciences, Lanzhou, Chine


Description :
This study estimated the carbon fixation by 2 successional stages of biological soil crusts (BSCs) based on 4 years of field observations in the Shapotou region, located in the south-eastern fringe of the Tengger Desert, in Inner-Mongolia. Carbon fixation by 2 BSCs has been compared via estimating daily carbon fixation using measuring net photosynthesis with 10 sampling plots per crust stage in situ, combining with calculating the wet daytime of crustal cryptogam thallus. However, diurnal carbon fixation of both BSCs was largely determined by crustal water content rather than photosynthesis photon flux and temperature. These findings indicate the recovery of BSCs is expected to significantly increase carbon input into sandy desert ecosystems.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2012, vol. 97, p. 119-126, nombre de pages : 8, Références bibliographiques : 1 p.

Date :
2012

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

Langue :
Anglais
Droits :
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