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Impacts of socio-economic factors on sediment yield in the Upper Yangtze River

Auteur(s) et Affiliation(s)

DU, J.
Key Lab. of Water Cycle and Related Surface Processes, Inst. of Geographic Sciences and Natural resources Research, CAS, Beijing, Chine
Graduate Univ. of Chinese Academy of Sciences, Beijing, Chine
SHI, C.
Key Lab. of Water Cycle and Related Surface Processes, Inst. of Geographic Sciences and Natural resources Research, CAS, Beijing, Chine
FAN, X.
Key Lab. of Water Cycle and Related Surface Processes, Inst. of Geographic Sciences and Natural resources Research, CAS, Beijing, Chine
Graduate Univ. of Chinese Academy of Sciences, Beijing, Chine
ZHOU, Y.
Key Lab. of Water Cycle and Related Surface Processes, Inst. of Geographic Sciences and Natural resources Research, CAS, Beijing, Chine
Graduate Univ. of Chinese Academy of Sciences, Beijing, Chine


Description :
Taking Sichuan Province and Chongqing City as an example, this paper studies the relationship between socio-economic factors and sediment yield in the Upper Yangtze River based on section data in 1989 and 2007. The results show that sediment yield is significantly correlated with population density and cultivated area, in which the former appears to be more closely related to sediment yield. Moreover, in the relation of sediment yield vs. population density, a critical value of population density exists. This phenomenon essentially reflects the influence of natural factors, such as topography, precipitation and soil property, and some human activities on sediment yield. It is also found that population tends to move from the areas with bad environment and high sediment yield to the areas with more comfortable environment and less sediment yield.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2011, vol. 21, n°. 2, p. 359-371, nombre de pages : 13, Références bibliographiques : 34 ref.

Date :
2011

Editeur :
Pays édition : Chine

Langue :
Anglais
Droits :
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