Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (11): 89-95.doi: 10.11924/j.issn.1000-6850.casb2021-0962

Special Issue: 美丽乡村建设 资源与环境 耕地保护

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The Impact of Construction Land Expansion on Arable Land Resources in Changchun

Gulinaer ·Suoerdahan1(), LI Xiaoyan1(), SHI Zhenyu1, XING Zihan2, WU Haitao3   

  1. 1College of Earth Sciences Jilin University, Changchun 130012
    2Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102
    3Inner Mongolia Autonomous Region Guaizihu Meteorological Station, Alxa League, Inner Mongolia 735408
  • Received:2021-10-11 Revised:2021-12-19 Online:2022-04-15 Published:2022-05-18
  • Contact: LI Xiaoyan E-mail:glnes19@mails.jlu.edu.cn;lxyan@jlu.edu.cn

Abstract:

The temporal-spatial changes of construction land and arable land and the impact of construction land expansion on arable land in Changchun were studied to provide reference for rational use of land and protection of arable land in the black soil region. Land use information of the study area in 2005 and 2019 were extracted from Landsat TM/OLI remote sensing images using the object-oriented-decision tree classification method. Then the temporal-spatial changes of construction land and arable land and the impact of construction land on arable land in the aspect of quantity, quality and structure were studied. The results showed that the area of construction land had expanded by 21163.30 hm2 since 2005, while the area of arable land had decreased by 19011.81 hm2. Newly added construction land occupied 18170.84 hm2 of arable land, accounting for 85.33% of the total area of the increased construction land. The expansion of construction land also led to an increase in the degree of fragmentation of arable land; most of the arable land occupied by construction land was originally high-quality arable land and the proportion of the area of Grade I to III could reach 72.17%. The research results are of great significance for coordinating the protection of arable land resources in rapid urbanization in the black soil region.

Key words: black soil region, construction land, arable land, GIS, Changchun City

CLC Number: