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Journal of Desert Research ›› 2024, Vol. 44 ›› Issue (1): 43-49.DOI: 10.7522/j.issn.1000-694X.2023.00076

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Preliminary research on the relationship between soil dust emission ability and soil properties

Rende Wang1(), Hongjun Jiang1, Qing Li1, Gang Fu1, Yuqiang Li2, Yixiao Yuan3, Chunping Chang4, Zhongling Guo4   

  1. 1.Institute of Geographical Sciences / Hebei Engineering Research Center for Geographic Information Application,Heibei Academy Sciences,Shijiazhuang 050011,China
    2.College of Management Science and Engineering,Hebei University of Economics and Business,Shijiazhuang 050002,China
    3.State Key Laboratory of Earth Surface Processes and Resource Ecology / MOE Engineering Research Center of Desertification and Blown-Sand Control,Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China
    4.College of Resource and Environment Sciences / Hebei Key Laboratory of Environmental Change and Ecological Construction,Hebei Normal University,Shijiazhuang 050024,China
  • Received:2023-02-10 Revised:2023-05-17 Online:2024-01-20 Published:2023-12-26

Abstract:

The soil dust emission ability (SDEA) is a key factor to determine the regional dust emission amount, but there has been a lack of suitable soil property indicators to characterize. In this paper, the relationship between SDEA and soil properties is studied by means of field sampling and wind tunnel experiment. The results showed that only the content of silt and sand particles in soils has a significant impact on SDEA among the basic physical and chemical properties of soil related to wind erosion. The SDEA first increases and then decreases with the increase of silt and sand content in soils, which supports the viewpoint proposed by relevant scholars that medium texture soil has the strongest dust emission ability. The SDEA is more closely related to the particle size composition of soil dry aggregates, which increases linearly with the increase of the content of fine particles with a diameter of <0.05 mm in soil erodible particles(C<0.05/<0.85), and decreases significantly with the increase of the content of saltation particles with a diameter of 0.1-0.5 mm in soil erodible particles(C0.1-0.5/<0.85)in a power function law. Among the various indicators of soil physical and chemical properties, only the content of fine particles with diameter of <0.05 mm in soil dry aggregates (C<0.05) can reflect the comprehensive impact of various soil basic physical and chemical properties on SDEA, and is significantly linearly correlated with the two positive indicators that affect SDEA, namely the content of soil erodible particles (C<0.85) and the value of C<0.05/<0.85. The C<0.05 should be a suitable soil indicator to characterize the SDEA for soil of aggregate development, which is confirmed by the analysis results of soil samples, but further experimental verification is needed.

Key words: soil dust emission ability, total emission amount of PM10, soil physical and chemical properties, soil erodibility, wind tunnel experiment

CLC Number: