SCIENTIA GEOGRAPHICA SINICA ›› 2023, Vol. 43 ›› Issue (3): 379-387.doi: 10.13249/j.cnki.sgs.2023.03.001

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Spatial differentiation of farmland and influencing factors on the Qinghai-Tibet Plateau

Wei Hui1(), Lyu Changhe2,3(), Yin Xu4   

  1. 1. School of Public Management, Hebei University of Economics and Business, Shijiazhuang 050061, Hebei, China
    2. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China
    4. School of Geographic Science, Hebei Normal University, Shijiazhuang 050024, Hebei, China
  • Received:2022-04-16 Revised:2022-08-09 Accepted:2023-02-06 Online:2023-03-30 Published:2023-03-20
  • Supported by:
    The Strategic Priority Research Program of Chinese Academy of Science(XDA20040301);Science and Technology Project of Hebei Education Department(BJK2023081)


Identifying the status quo, spatial differentiation and influencing factors of farmland has practical significance for optimizing and adjusting the spatial utilization pattern of farmland to guarantee the regional food security. Based on the 0.51-1.02 m high-resolution images of Google Earth, this study obtained the farmland area in 2018 and analyzed its spatial variation and causal factors on the Qinghai-Tibet Plateau by visual interpretation, GIS-based spatial analysis and geographic detector model. The results show that: 1) In 2018, total farmland area on the Qinghai-Tibet Plateau was 133.73 million hm2, decreased from east to west and from south and to north. Of the total farmland area, 33.27% is concentrated in the Yijiang Lianghe valleys of Tibet and the He-Huang valleys of Qinghai, while 76.02% and 75.41% are distributed within the range of 1600 m from roads and 5000 m from rivers, respectively. 2) Under the influence of topography and climate, the farmland shows a scattered and relatively concentrated spatial differentiation characteristic. Most farmland is concentrated in the zones between 3500-4000 m of elevation, 6°-15° of slope steepness, 400-600 mm of annual precipitation, and 0-5℃ of annual temperature, respectively. In other areas, the farmland area is small and mostly distributed in a point pattern. 3) The spatial distribution of farmland on the Qinghai-Tibet Plateau was jointly influenced by natural factors including topography, climate and soil, as well as socioeconomic factors of GDP, population and location, ect. In particular, duration of sunshine hours and precipitation in the growing season, and slope steepness had the greatest influence, and generally determined the farmland spatial distribution on the Qinghai-Tibet Plateau.

Key words: farmland, spatial differentiation, visual interpretation, Qinghai-Tibet Plateau

CLC Number: 

  • F129.9