干旱区研究

Arid Zone Research >

2018 , Vol. 35 >Issue 4: 796 - 803

DOI: https://doi.org/10.13866/j.azr.2018.04.06

Water and Soil Resources and Utilization

Soil Carbon Emission of Five Desert Shrubberies in the West Ordos Plateau

  • WANG Shan ,
  • DANG Xiao-hong ,
  • GAO Yong ,
  • HU Sheng-rong ,
  • WANG Ze-yu ,
  • PAN Xia
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  • 1. College of Desert Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, Inner Mongolia,China;
    2. College of Resources and Environmental Economics, Inner Mongolia University of Finance and Economics, Hohhot 010018, Inner Mongolia,China;
    3. Central-local Governmental Key Laboratory of Wind Erosion, Hohhot 010018, Inner Mongolia,China;
    4. Inner Mongolia Environmental Assessment Center, Hohhot 010011, Inner Mongolia,China

Received date: 2017-09-19

  Revised date: 2018-02-02

  Online published: 2025-11-18

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Abstract

An Automated Soil CO2 Exchange Station was applied to study the soil CO2 emission and the main environmental factors of five desert shrubberies so as to get a more exact estimation of soil carbon emission and a clearer understanding of its affecting factors in the west Ordos Plateau. The results showed that the curve of daily variation of soil carbon emission rate was unimodal, and the maximum rate occurred during the period from 11:30 to 13:30 o’clock. The monthly soil carbon emission rate of the five desert shrubberies in growing season (from May to July) was much higher than that in non-growing season (October), and that of Helianthemum songaricum shrubbery was the highest and 0.76-1.67 times higher than that of other shrubberies. The annual average soil carbon emission rates under the shrubberies of Ammopiptanthus mongolicus, Zygophyllum xanthoxylum, Tetraena mongolica, H. songaricum and Reaumuria songarica were 8 090.63, 7 287.40, 7 868.16, 8 375.69 and 7 618.47 kg·hm-2·a-1 respectively. In the three future climate scenarios (low emission scenario B1, moderate emission scenario A1B and high emission scenario A2), the average soil carbon emission of five desert shrubberies would be increased by 8.30% compared with that in the baseline scenario, especially in the Z. xanthoxylum shrubbery. The response of soil carbon emission of different shrubberies to temperature change was different, but the difference was not significant. The research results could be referred in estimating carbon balance in arid and semiarid regions in the northwest China under global environmental change.

Key words： soil; desert shrubbery; carbon emission rate; climate scenario; west Ordos Plateau

Cite this article

WANG Shan , DANG Xiao-hong , GAO Yong , HU Sheng-rong , WANG Ze-yu , PAN Xia . Soil Carbon Emission of Five Desert Shrubberies in the West Ordos Plateau[J]. Arid Zone Research, 2018 , 35(4) : 796 -803 . DOI: 10.13866/j.azr.2018.04.06

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