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Journal of Desert Research ›› 2024, Vol. 44 ›› Issue (1): 130-141.DOI: 10.7522/j.issn.1000-694X.2023.00063

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The spatial and temporal variation of soil wind erosion modulus in the Baishan region of Hebei Province from 2000 to 2018

Wenru Jia1(), Qing Li2(), Xiuming Li3, Baoni Xie4, Cui Wang5   

  1. 1.Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830000,China
    2.Institute of Geographical Sciences,Hebei Academy Sciences,Shijiazhuang 050011,China
    3.School of Management /, Hebei GEO University,Shijiazhuang 050031,China
    4.School of Land Science and Space Planning, Hebei GEO University,Shijiazhuang 050031,China
    5.Baotou Teachers' College of Inner Mongolia University of Science and Technology,Baotou 014030,Inner Mongolia,China
  • Received:2023-03-28 Revised:2023-05-31 Online:2024-01-20 Published:2023-12-26
  • Contact: Qing Li

Abstract:

Soil wind erosion is one of the major ecological environmental problem in arid and semi-arid areas. Bashang region of Hebei Province is a typical wind erosion area in northern China. Its special geographical location makes it an important ecological barrier in Beijing-Tianjin-Hebei. In order to better understand the process of soil wind erosion in Bashang region and improve the wind and sand protection system in this region, this study calculates the soil wind erosion modulus in Bashang region of Hebei Province using the integrated wind erosion modeling system (IWEMS) based on meteorological, soil, remote sensing data and land use data. The results showed that from 2000 to 2018, the average wind erosion modulus and the proportion of wind erosion risk areas in Baishan region showed a decreasing trend overall. The variation of monthly average wind erosion modulus indicates that the wind erosion mainly occurred from November to May. The degree of wind erosion is mainly mild to moderate, and wind erosion disasters mainly occur in the central and western parts of the Baishan region. Since 2009, the wind erosion modulus in Kangbao County and Zhangbei County has gradually decreased, while the wind erosion modulus in the western part of Fengning County has gradually increased. Through data analysis on the factors affecting soil wind erosion, it was found that the wind erosion modulus of different land use types ranked as follows: sandy land > cultivated land > grassland > forestland. Vegetation cover and soil moisture were the main factors affecting the monthly variation of wind erosion modulus, and cumulative sand-carrying time was positively correlated with wind erosion modulus.

Key words: Bashang region, IWEMS model, wind erosion modulus, wind erosion risk area

CLC Number: