湖北农业科学 ›› 2023, Vol. 62 ›› Issue (1): 47-53.doi: 10.14088/j.cnki.issn0439-8114.2023.01.008

• 资源·环境 • 上一篇    下一篇

城镇扩张占用耕地时空格局及利用效率研究——以成都都市圈为例

张之凤1, 唐玉萍1, 潘洪义1, 马红菊2   

  1. 1.四川师范大学西南土地资源评价与监测教育部重点实验室/地理与资源科学学院,成都 610066;
    2.四川省农业农村厅农业生态资源保护中心,成都 610041
  • 收稿日期:2021-10-03 出版日期:2023-01-25 发布日期:2023-03-07
  • 通讯作者: 潘洪义(1980-),男,河北唐山人,副教授,主要从事土地利用评价与规划研究,(电子信箱)panhongyi80@163. com。
  • 作者简介:张之凤(1997-),女,四川成都人,在读硕士研究生,研究方向为城市土地管理与房地产开发,(电话)18200587266(电子信箱)916891942@qq. Com
  • 基金资助:
    国家自然科学基金项目(42071222); 教育部人文社会科学研究规划基金项目(18XJA630005)

Study on the spatial and temporal pattern and utilization efficiency of cultivated land occupied by urban expansion:Taking Chengdu Metropolitan Area as an example

ZHANG Zhi-feng1, TANG Yu-ping1, PAN Hong-yi1, MA Hong-ju2   

  1. 1. Key Laboratory of Southwest Land Resources Evaluation and Monitoring of Ministry of Education/School of Geography and Resources Sciences, Sichuan Normal University, Chengdu 610066,China;
    2. Agricultural Ecological Resources Protection Center, Sichuan Provincial Department of Agriculture and Rural Affairs, Chengdu 610041,China
  • Received:2021-10-03 Online:2023-01-25 Published:2023-03-07

摘要: 为了减少城镇扩张占用耕地的低效率使用问题影响区域粮食安全,基于GIS平台,结合扩张速度、贡献度指数和等扇形分析等研究方法,对成都都市圈2000—2018年城镇扩张占用耕地的时空格局进行刻画,再结合BCC模型对其利用效率演变规律进行揭示。结果表明,研究区域城镇扩张占用耕地面积为470. 528 km2,扩张速度为24.765 km2/年,贡献度指数为74.4%,呈现先增强后减弱的趋势;占用耕地的方向整体由西部、北部向东部和南部转移;综合效率、技术效率、规模效率均呈现先下降后上升的趋势;综合效率空间变化上,高效区由中西部向东南部迁移,较高效区2、3时段集中分布在东北部到西南部,低效区总体位于西部。

关键词: 城镇扩张占用耕地, 方向变动, BCC模型, 等扇形分析法, 时空格局

Abstract: In order to reduce the effect of the inefficient use of cultivated land occupied by urban expansion on regional food security, based on GIS platform, this study combined research methods such as expansion speed, contribution index and equal fan analysis to describe the temporal and spatial pattern of cultivated land occupied by urban expansion in Chengdu metropolitan area from 2000 to 2018, and then reveal the evolution law of its utilization efficiency through BCC model. The results showed that the total cultivated land occupied by urban expansion in the study area was 470.528 km2,the expansion speed was 24.765 km2/a, and the contribution index was 74.4%, showing a trend of first strengthening and then weakening; the direction of cultivated land occupation was transferred from the west and north to the east and south as a whole; this study also found that the comprehensive efficiency, technical efficiency and scale efficiency all showed a trend of decreasing first and then increasing. In terms of the spatial change of comprehensive efficiency, the high efficiency zone moved from the central and western regions to the relatively high efficiency areas were concentrated in the northeast to southwest in the second and third periods, and the inefficient area was generally located in the west.

Key words: cultivated land occupied by urban expansion, direction change, BCC model, equal fan analysis method, spatial and temporal pattern

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