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Topographic differentiation simulation of crop yield and soil and water loss on the Loess Plateau

Auteur(s) et Affiliation(s)

XU, Y.
Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
YANG, B.
Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
LIU, G.
Inst. of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Shaanxi, Yangling, Chine
LIU, P.
Inst. of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Shaanxi, Yangling, Chine


Description :
This paper, taking the Yangou Basin as a case study and using day-by-day meteorological data of Yan’an station in 2005, simulated and analyzed the quantitative relation between crop yield, soil and water loss and topographic condition with the aid of WIN-YIELD software. Results and discussion about the influence of topographic gradient on crop yield, and on soil and water loss. It is showed that topographic gradients of 5° and 15° are two important thresholds.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2009, vol. 19, n°. 3, p. 331-339, nombre de pages : 9, Références bibliographiques : 1 p.

Date :
2009

Editeur :
Pays édition : Chine

Langue :
Anglais
Droits :
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