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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (11): 80-87.doi: 10.11924/j.issn.1000-6850.casb2022-0970

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Spatial-temporal Characteristics of Cultivated Land Occupied by Construction Land Expansion in Corn Belt in Central Jilin Province from 1990 to 2019

SHI Zhenyu1(), LI Xiaoyan1(), GULINAER·Suoerdahan1, XING Zihan2   

  1. 1 College of Earth Sciences, Jilin University, Changchun 130012
    2 Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102
  • Received:2022-11-15 Revised:2023-01-08 Online:2023-04-15 Published:2023-04-10

Abstract:

The study aims to investigate the spatial-temporal characteristics of cultivated land occupied by construction land expansion as well as its driving factors, which is important for effectively protecting cultivated land resources and meeting the demand of urban development for construction land expansion. Based on Landsat TM/OLI remote sensing image data, the spatial-temporal characteristics of construction land expansion and cultivated land change, and the driving factors in 1990, 2000, 2010 and 2019 of 10 counties and cities in the corn belt of central Jilin Province were analyzed. The results are as follows. (1) The construction land in the corn belt of central Jilin Province was expanded by 772.97 km2 from 1990 to 2019, and the spatial difference in construction land expansion was obvious. (2) The clustering type of construction land expansion intensity in the study area was mainly very high value aggregation area, dominated by Changchun, and the model of construction land expansion was epiphytic. (3) From 1990 to 2019, the net loss of cultivated land in the study area amounted to 793.19 km2 with an annual loss rate of 1.01%, and 65.27% of the reduced cultivated land was transformed into construction land, mainly at the outer edge of urban areas. (4) The temporal drivers of construction land expansion occupying cultivated land in the study area were mainly policy factors, and spatially, economic location and geographical location were the main constraints. This study analyzed the spatial-temporal characteristics of cultivated land occupied by construction land expansion in the corn belt of central Jilin Province, and could provide a theoretical basis for land use planning.

Key words: construction land, cultivated land, driving factors, the corn belt in central Jilin Province