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Library Soil organic carbon and total nitrogen storage under different land uses in the Naiman Banner, a semiarid degraded region of northern China

Soil organic carbon and total nitrogen storage under different land uses in the Naiman Banner, a semiarid degraded region of northern China

Soil organic carbon and total nitrogen storage under different land uses in the Naiman Banner, a semiarid degraded region of northern China

Resource information

Date of publication
December 2014
Resource Language
ISBN / Resource ID
AGRIS:US201600199790
Pages
9-20

Li, Y., Han, J., Wang, S., Brandle, J., Lian, J., Luo, Y. and Zhang, F. 2014. Soil organic carbon and total nitrogen storage under different land uses in the Naiman Banner, a semiarid degraded region of northern China. Can. J. Soil Sci. 94: 9–20. Accurate investigation of soil organic carbon (SOC) and total nitrogen (TN) storage at a regional level is important for detecting changes in the C and N sequestration and emission potentials induced by land-use and cover type changes. In a degraded semiarid region of northern China's Horqin Sandy Land, we selected 208 locations and calculated SOC and TN storage to a depth of 100 cm for the main land-use and cover types. The productive cropland on former grassland had the highest level of SOC and TN storage (6613 g C m⁻² and 709 g N m⁻²). The corresponding storage values were 3758 g C m⁻² and 402 g N m⁻² in degraded grassland, 3449 g C m⁻² and 373 g N m⁻² in afforested dunes, 2674 g C m⁻² and 320 g N m⁻² in unproductive cropland on former dunes, and 1109 g C m⁻² and 129 g N m⁻² in sand dunes (from mobile to fixed). The average soil bulk density was highest in sand dunes, with a value of 1.59 g cm⁻³, and lowest in productive cropland on former grassland, with a value of 1.39 g cm⁻³. The conversion of severely degraded sandy land into other land-use and cover types therefore has considerable potential to partially offset the SOC and TN loss during the past century that has resulted from desertification in the Horqin Sandy Land.

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Authors and Publishers

Author(s), editor(s), contributor(s)

Li, Yuqiang
Juanjuan Han
Shaokun Wang
James Brandle
Jie Lian
Yongqing Luo
Fengxia Zhang

Data Provider
Geographical focus