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Soil indicators for eco-geographic regionalization : a case study in mid-temperate zone of eastern China

Auteur(s) et Affiliation(s)

LIU, Y.
Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine
Graduate University of Chinese Academy of Sciences, Beijing, Chine
WU, S.
Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine
ZHENG, D.
Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine
DAI, E.
Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine


Description :
Eco-geographic regional system is formed by division or combination of natural features based on geographic relativity and comparison of major ecosystem factors (including biological and non-biological) and geographic zonality. In previous studies, soil types were often taken as a basis for soil regionalization. Based on the second China's national soil survey data and the provincial soil resource information, by principal analysis and discriminant analysis, this paper dicusses the appropriate soil indicators as the complement of eco-geographic region indicator systems and the relationships between these soil indicators and soil types in regionalization. The results show that 5 indicators are used in eco-geographic zonality in mid-temperate zone of eastern China which are organic matter content, cation exchange capacity, pH, clay content and bulk density in topsoils. By cluster analysis it is proved that these soil indicators are better than the soil types and soil regionalization in delineating eco-geographic regions.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2009, vol. 19, n°. 2, p. 200-212, nombre de pages : 13, Références bibliographiques : 1,5 p.

Date :
2009

Editeur :
Pays édition : Chine

Langue :
Anglais
Droits :
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