地理研究 ›› 2018, Vol. 37 ›› Issue (4): 717-730.doi: 10.11821/dlyj201804006

• 研究论文 • 上一篇    下一篇


吴成永1,2,3(), 陈克龙2,3(), 曹广超2,3, 段水强4, 薛华菊5, 鄂崇毅1,2,3, 罗正霞1,2,3   

  1. 1. 青海师范大学地理科学学院,西宁 810008
    2. 青藏高原环境与生态教育部重点实验室,西宁 810008
    3. 青海省自然地理与环境过程重点实验室,西宁 810008
    4. 青海省水文水资源勘测局,西宁 810001
    5. 青海师范大学经济管理学院,西宁 810008
  • 收稿日期:2017-10-22 修回日期:2018-01-19 出版日期:2018-04-20 发布日期:2018-05-28
  • 作者简介:

    作者简介:吴成永(1978- ),男,甘肃通渭人,讲师,博士研究生,主要研究方向为遥感与地理信息系统应用。E-mail:giswuchengyong@163.com

  • 基金资助:

The spatial and temporal differences and driving forces of wind erosion climatic erosivity in Qinghai province from 1984 to 2013

Chengyong WU1,2,3(), Kelong CHEN2,3(), Guangchao CAO2,3, Shuiqiang DUAN4, Huaju XUE5, Chongyi E1,2,3, Zhengxia LUO1,2,3   

  1. 1.College of Geographical Science, Qinghai Normal University, Xining 810008, China
    2. Key Laboratory of Environment and Ecology of Qinghai-Tibet Plateau, Ministry of Education, Xining 810008, China
    3. Qinghai Key Laboratory of Natural Geography and Environmental Processes, Xining 810008, China
    4. Hydrology and Water Resource Bureau of Qinghai Province, Xining 810001, China
    5. College of Economy and Management, Qinghai Normal University, Xining 810008, China
  • Received:2017-10-22 Revised:2018-01-19 Online:2018-04-20 Published:2018-05-28
  • About author:

    Author: Shi Zhenqin (1988-), PhD, specialized in regional development and land space management in mountain areas. E-mail: kevinszq@163.com

    *Corresponding author: Deng Wei (1957-), Professor, specialized in mountain environment and regional development.

    E-mail: dengwei@imde.ac.cn



关键词: 风蚀气候侵蚀力, 地理加权回归, 重心转移模型, 高原季风, 青藏高原


The soil erosion is prone to occur in the Qinghai-Tibet Plateau (QTP) where freezing and thawing, weathering and wind erosion are all strong, precipitation is rare, wind is strong and frequent, vegetation is sparse, and the loose ground surface material is susceptible to blowing away by wind. Climate is an important external force for soil erosion and its influence on soil erosion can be described quantitatively by wind erosion climatic factors index (C). Qinghai province's C were calculated based on the method suggested by FAO, using the continuous and complete surface meteorological observation data from meteorological stations in Northwest China's Qinghai Province from 1984 to 2013. Applying geographical weighted regression model (GWR), the gravity center and its transfer model as well as the effective sensitivity index and effective influence area which were defined in this paper, we obtained spatial and temporal distribution and evolution law of wind erosion climatic erosivity (WECE) and its influencing factors, and also analyzed their driving forces and mechanisms. The results showed that WECE in Qinghai province was on the decline and the most severely eroded region has been extending from the Qaidam Basin to the western part of southern Qinghai Plateau during the past 30 years. Wind speed was the dominant factor of WECE, the secondary factor was the temperature and the least impact was the precipitation. The gravity center of wind speed effective sensitive region moved from the edge of the southwest Qaidam Basin to the western part of southern Qinghai Plateau, whose displacement direction was roughly opposite to the direction of cyclone system center of the surface layer over the Qinghai-Tibet Plateau. The gravity center of air temperature effective sensitive region moved from the low-altitude region of central Qinghai to the high-altitude southern Qinghai Plateau. This was related to the law of increasing temperature, namely, temperature was increasing from the edge of the plateau to the plateau hinterland and the higher the altitude was, the faster the temperature increased in the southern Qinghai Plateau. Precipitation mainly affected the WECE in the Qaidam Basin, and its gravity center moved to the southeast, which might be related to the advance and retreat of the Plateau Summer Monsoon. The research of this paper can provide the technical support and theoretical guidance for the prevention, assessment and prediction of soil wind erosion disaster in the QTP. It can also provide a new perspective for the study on large-scale driving force of the biogeochemical cycles (such as C, N and P cycles) in QTP and even in the world.

Key words: wind erosion climatic erosivity, geographical weighted regression, gravity center model, plateau monsoon, Qinghai-Tibet Plateau