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(Article of periodic en Anglais - 2013)

Document title

Fractal features of soil particle-size distribution and total soil nitrogen distribution in a typical watershed in the source area of the middle Dan River, China

Authors(s) and Affiliation(s)

XU G. (1 2) ; LI Z. (1 2 3) ; LI P. (3) ;
(1) State Key Lab. of Soil Erosion and Dry Land Farming on the Loess Plateau, Inst. of Soil and Water Conservation, CAS and Ministry of Water Resources, Yangling, CHINE
(2) Graduate School of Chinese Academy of Sciences, Beijing, CHINE
(3) Key Lab. of Northwest Water Resources and Environment Ecology of MOE, Univ. of Technology, Xi'an, CHINE

Abstract

Particle-size distribution (PSD) and total soil nitrogen (TSN) were determined in soil from depths of 0-60 cm in 4 soil horizons for different plant communities in a watershed in the middle Dan River Valley. There was an obvious decreasing trend in TSN content with increasing depth under the various plant communities. Spatial patterns of TSN changed significantly with land-use types. The results demonstrate that fractal dimension analysis offers a useful approach to quantify and assess the degree of soil degradation among similar soil types, but that anthropogenic disturbances can have a great impact on the fractal dimensions for different land-use types. Cropland was prone to soil degradation, especially on steep slopes. Consequently, improved conservation measures are needed to enhance and sustain soil and water quality, and to prevent further soil degradation in the middle Dan River

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 101 [pp. 17-23]

Bibliographic references : 39 ref.

Collation : 5 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.09.013

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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