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中国农学通报 ›› 2023, Vol. 39 ›› Issue (11): 80-87.doi: 10.11924/j.issn.1000-6850.casb2022-0970

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

1990—2019年吉林省中部玉米带建设用地扩张占用耕地时空特征研究

石振宇1(), 李晓燕1(), 古丽娜尔·索尔达汗1, 邢梓涵2   

  1. 1 吉林大学地球科学学院,长春 130012
    2 中国科学院东北地理与农业生态研究所,长春 130102
  • 收稿日期:2022-11-15 修回日期:2023-01-08 出版日期:2023-04-15 发布日期:2023-04-10
  • 通讯作者: 李晓燕,女,1975年出生,教授,博士,主要从事资源环境遥感与GIS应用方面的研究。通信地址:130012 吉林省长春市建设街2199号 吉林大学地球科学学院,E-mail:lxyan@jlu.edu.cn
  • 作者简介:

    石振宇,女,1997年出生,内蒙古兴安盟人,硕士,主要从事土地遥感及城市化进程方面的研究。通信地址:130012 吉林省长春市建设街2199号 吉林大学地球科学学院,E-mail:

  • 基金资助:
    国家自然科学基金“综合植被与土壤信息的松嫩平原西部草地退化遥感评价模型研究”(42171328); 吉林省科技发展计划项目“吉林省中部玉米带城市化进程对耕层有机碳储量的影响”(20200201048JC)

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

摘要:

研究旨在探究建设用地扩张与耕地的时空特征以及建设用地扩张占用耕地的驱动因素。研究基于Landsat TM/OLI遥感影像数据,以吉林省中部玉米带的10个县市为研究对象,对1990、2000、2010、2019年4个时期建设用地扩张与耕地变化的时空特征及其空间驱动因素进行了分析。结果表明:(1)吉林省中部玉米带在1990—2019年间建设用地扩张了772.97 km2,建设用地扩张空间差异明显;(2)不同时间段内研究区建设用地扩张强度聚类主要为极高值聚集区,以长春市为主,建设用地扩张模型为外延型;(3)1990—2019年间研究区耕地净流失达793.19 km2,年损失率为1.01%,减少的耕地65.27%转变为建设用地,主要为城区外缘的耕地;(4)研究区建设用地扩张占用耕地的时间驱动力主要为政策因素,空间上经济区位和地理区位是主要约束因素。该研究分析了吉林省中部玉米带建设用地扩张占用耕地的时空特征,为土地利用规划提供了理论基础。

关键词: 建设用地, 耕地, 驱动因素, 吉林省中部玉米带

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