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[1]ZHANG Hui-guo,WANG He-ling.Characteristics of the Vertical Distribution and Spatial Variability of Soil Organic Matter in Ebinur Lake Basin of Xinjiang Autonomous Region, China[J].Research of Soil and Water Conservation,2013,20(05):77-81,85.

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Characteristics of the Vertical Distribution and Spatial Variability of Soil Organic Matter in Ebinur Lake Basin of Xinjiang Autonomous Region, China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 05 Page number: 77-81,85 Column: Public date: 2013-10-28

Title:: Characteristics of the Vertical Distribution and Spatial Variability of Soil Organic Matter in Ebinur Lake Basin of Xinjiang Autonomous Region, China

Author(s):: ZHANG Hui-guo¹, WANG He-ling^2,3; 1. School of Mathematics and System Science, Xinjiang University, Urumqi 830046, China;
2. School of Applied Mathematics, Xinjiang University of Finance and Economics, Urumqi 830012, China;
3. Xinjiang Key Laboratory of Oasis Ecology, Ministry of Education, Xinjiang University, Urumqi 830046, China

Keywords:: soil organic matter (SOM); lag spatial correlation; vertical space distribution; empirical orthogonal function analysis (EOF); Ebinur Lake Basin

CLC:: S153.6⁺21

DOI:: -

Abstract:: The vertical space distribution patterns of soil organic matter(SOM) in Ebinur Lake Basin were investigated by using the vertical-lag spatial correlation and empirical orthogonal function analysis (EOF). The results show that the vertical-lag spatial positive correlation (negative correlation) can indicate the regions where SOM has a similar (contrary) vertical distribution pattern. Specifically, the SOM content displays an increasing trend with increase of soil depth in the eastern and western regions of Ebinur Lake Basin, but the SOM content decreases with the increase of soil depth in the central part of the basin. The SOM content within the 40 cm interval of soil layers is strong correlation, but it is a weak correlation when the interval of soil layer is more than 40 cm. There is a threshold along the vertical direction of soil (i.e. 60 cm) where the SOM content increment (decrement) rate is very different. In Ebinur Lake Basin, the vertical spatial variability of SOM was severely affected by the spatial variation of the watershed ecological environment, ecological landscape, the rhizodeposition characteristics of arid vegetation and the spatial heterogeneity of soil profile evolution.

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