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Journal of Agriculture ›› 2026, Vol. 16 ›› Issue (5): 43-50.doi: 10.11923/j.issn.2095-4050.cjas2025-0048

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GIS-based Suitability Evaluation and Analysis of Agricultural Land in Pingyin County

FENG Pengfei1(), SHEN Chenglong1, JIANG Huizhong2   

  1. 1 Shandong Zhituo Geographic Information Engineering Co., LTD, Jinan 250100
    2 Zhengyuan Geographic Information Group Co., LTD., Beijing 101399
  • Received:2025-02-08 Revised:2025-07-10 Online:2026-05-20 Published:2026-05-15

Abstract:

To protect agricultural land and improve the efficiency of agricultural land use in Pingyin County, a suitability evaluation of agricultural land in Pingyin County was conducted. Based on the data of land use status of the third land survey in Pingyin County, this study selected nine evaluation factors, including topography, soil, water resources, and human and social factors, to construct an evaluation index system. Using the principal component analysis method to determine the factor weight, combined with GIS spatial analysis and natural breakpoint classification method, the suitability evaluation of cultivated land, garden land and forest land in Pingyin County was carried out. The results show that: (1) the proportion of highly suitable farmland in Pingyin County is 33%, concentrated along the northwest bank of the Yellow River and the southeast bank of the Hui River. (2) The proportion of areas suitable for gardens and forests is around 11%, distributed relatively loosely, while the southern central mountainous region is generally less suitable. (3) Due to the influence of mountainous terrain, the suitability of agricultural land varies among townships, with uneven spatial distribution. In particular, more than half of the arable land in Xiaozhi Township is highly suitable. This GIS comprehensive suitability assessment aims to identify potential agricultural land and provide support for scientific planning and optimization of agricultural land spatial layout.

Key words: GIS, suitability evaluation, spatial analysis, agricultural land, land use type, principal component analysis, natural breakpoint classification method

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