Effects of Representative Artificial Vegetation Types on Glomalin-Related Soil Protein and Aggregate Stability on Loess Plateau in Western Shanxi Province
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    Abstract:

    [Objective] The objective of the study was to elucidate the effects of representative artificial vegetation types on soil glomalin-related soil protein (GRSP) and aggregate stability, and to evaluate the relationship between the latter two factors on the Loess Plateau in Western Shanxi Province in order to provide basic data for artificial vegetation restoration project.[Methods] Four representative artificial vegetation types, Medicago sativa, Robinia pseudoacacia, Platycladus orientalis, and Juglans regia, were selected in the Sanchuan River Basin, western Shanxi Province, with a cropland as the control. Soil samples were taken from a depth of 0-100 cm to analyze the distribution differences of easily extractable-GRSP(EE-GRSP), total-GRSP (T-GRSP), soil organic carbon (SOC), and aggregate stability among different vegetation types. The relationship between these parameters were evaluated by Pearson analysis.[Results] The EE-GRSP and T-GRSP concentrations and the EE-GRSP/T-GRSP ratio significantly differed in the 0-30 cm surface soil across different vegetation types, with the highest and lowest values being found in the J. regia and M. sativa plots, respectively. Both the EE-GRSP/SOC and T-GRSP/SOC ratios always increased with the increase of soil depth, having ranges of 1.78~6.77 and 4.07~19.11, respectively. The EE-GRSP/SOC and T-GRSP/SOC increased in the P. orientalis (39.67% and 36.62%) and M. sativa (39.25% and 46.70%) plots as compared with the ones in cropland, while they decreased in the J. regia plot (31.07% and 36.93%). Mean weight diameter was positively correlated with T-GRSP and SOC (p<0.05) and negatively correlated with EE-GRSP/SOC (p<0.05).[Conclusion] Different artificial vegetation types considerably influenced GRSP components in the surface soil. Soil aggregate stability was not only related to the concentration of soil GRSP components, but also to their contribution to SOC.

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朱兴菲,刘小芳,赵勇钢,刘新春,高冉,栗文玉.晋西黄土区典型人工植被对土壤球囊霉素和团聚体稳定性的影响[J].水土保持通报英文版,2018,38(6):80-87

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History
  • Received:April 16,2018
  • Revised:June 04,2018
  • Adopted:
  • Online: January 07,2019
  • Published: