Mots-clés
Années 1980-2008 ; Base de données ; Biogéochimie ; Carbone ; Carte thématique ; Chine ; Cycle du carbone ; Echelle ; Géochimie ; Modèle ; Propriétés du sol ; Sol ; Sol cultivéBiogeochemistry ; Carbon ; Carbon cycle ; China ; Cultivated land ; Data base ; Geochemistry ; Model ; Scale ; Soil ; Soil properties ; Thematic mapBase de datos ; Biogeoquímica ; Carbono ; China ; Ciclo del carbono ; Escala ; Geoquímica ; Mapa temático ; Modelo ; Propiedades del suelo ; Suelo ; Suelo cultivadoMap scale effects of soil databases on modeling organic carbon dynamics for paddy soils of China
Auteur(s) et Affiliation(s)
XU, S.
State Key Lab. of Soil and Sustainable Agriculture, Inst. of Soil Sciences, CAS, Nanjing, Chine
ZHAO, Y.
State Key Lab. of Soil and Sustainable Agriculture, Inst. of Soil Sciences, CAS, Nanjing, Chine
Graduate University of Chinese Academy of Sciences, Beijing, Chine
SHI, X.
State Key Lab. of Soil and Sustainable Agriculture, Inst. of Soil Sciences, CAS, Nanjing, Chine
Graduate University of Chinese Academy of Sciences, Beijing, Chine
YU, D.
State Key Lab. of Soil and Sustainable Agriculture, Inst. of Soil Sciences, CAS, Nanjing, Chine
Graduate University of Chinese Academy of Sciences, Beijing, Chine
LI, C.
Inst. for the Study of Earth, Oceans and Space, Complex Systems Research Center, Univ. New Hampshire, Durham, Etats-Unis
WANG, S.
Shool of Geodesy and Geomatics, Anhui Univ. of Science and Technology, Huainan, Chine
TAN, M.
State Key Lab. of Soil and Sustainable Agriculture, Inst. of Soil Sciences, CAS, Nanjing, Chine
SUN, W.
State Key Lab. of Soil and Sustainable Agriculture, Inst. of Soil Sciences, CAS, Nanjing, Chine
Description :
To improve the understanding of map scale associated uncertainty, the DeNitrification–DeComposition (DNDC) model were parameterized with 3 soil polygon-based databases at scales of 1:1,000,000, 1:4,000,000, and 1:14,000,000 to simulate SOC stocks (0–30 cm) for paddy soils of China and their changes from 1980 to 2008. It is showed that SOC stock estimates decreased as map scale decreased from 1:4,000,000 to 1:14,000,000. The multi-scale simulation results indicate that the application of 1:1,000,000 scale soil polygon-based database could reduce the inaccuracy of national SOC stock estimates and contribute to improved assessment of continental and global carbon balance.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 104, p. 67-76, nombre de pages : 10, Références bibliographiques : 1 p.
Date :
2013
Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)