[1]LI Ju,WANG Qin,SUN Hui.Temporal Dynamics of Light-Fraction Organic Carbon of Subalpine-Alpine Soil Along an Altitudinal Gradient in the Southwestern China[J].Research of Soil and Water Conservation,2015,22(01):51-55.
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Temporal Dynamics of Light-Fraction Organic Carbon of Subalpine-Alpine Soil Along an Altitudinal Gradient in the Southwestern China
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 01
Page number:
51-55
Column:
Public date:
2015-02-28
- Title:
- Temporal Dynamics of Light-Fraction Organic Carbon of Subalpine-Alpine Soil Along an Altitudinal Gradient in the Southwestern China
- Keywords:
- alpine cold soil; soil light fraction organic carbon; soil labile organic carbon; altitudinal gradients; cold season
- CLC:
- S153.6+21
- DOI:
- -
- Abstract:
- The soil light fraction organic carbon (LFOC) as one of the main components of soil labile organic carbon is of significance for dynamics and stability of the soil organic carbon in the cryogenic ecosystems of high altitude and high latitude area. Repacked columns of homogenized topsoil (0—20 cm) were incubated along a altitudinal gradients (3 250 m,3 438 m,3 672 m,3 852 m,4 098 m) in subalpine-alpine area of southwestern China. By analyzing response characteristics and trends of soil light fraction organic carbon (LFOC) the 0—10 cm and 10—20 cm depths in the elevation gradient, seasonal dynamics of soil light fraction organic carbon (LFOC) and its related biochemical processes under temperature gradient caused by different altitudes were revealed. The results showed that elevation and cold seasons are conducive to the accumulation of soil LFOC but the growing season is the consumption period of soil LFOC. All content of soil LFOC decreased with increase of depth in soil layer of 0—10 cm and 10—20 cm at the same elevation of the same sampling time, which presents the significant difference levels in November and March.
- References:
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1900-01-01