湖北农业科学 ›› 2022, Vol. 61 ›› Issue (15): 80-84.doi: 10.14088/j.cnki.issn0439-8114.2022.15.012

• 资源·环境 • 上一篇    下一篇

基于主成分回归和GM(1,1)模型的安康市耕地面积变化及预测分析

张建东1,2,3, 王丽1,2, 王恒1, 雒昆利4   

  1. 1.安康学院旅游与资源环境学院,陕西 安康 725000;
    2.陕西省科协院士专家工作站,陕西 安康 725000;
    3.陕南乡村振兴研究中心,陕西 安康 725000;
    4.中国科学院地理资源与科学研究所,北京 100101
  • 收稿日期:2022-06-29 出版日期:2022-08-10 发布日期:2022-08-25
  • 通讯作者: 雒昆利(1959-),女,陕西西安人,研究员,博士,博士生导师,主要从事地质环境与健康研究,(电子信箱)luokl@igsnrr.ac.cn。
  • 作者简介:张建东(1981-),男,甘肃民勤人,讲师,硕士,主要从事区域资源开发与保护研究,(电话)13571437753(电子信箱)zjd111zjd@163.com
  • 基金资助:
    国家自然科学基金项目(42007283); 安康市科研项目(AK2021-RK-07); 安康学院专项(2021AYKFKT06)

Cultivated land area change and prediction by the principal component regression and GM (1,1) model in Ankang City

ZHANG Jian-dong1,2,3, WANG Li1,2, WANG Heng1, LUO Kun-li4   

  1. 1. School of Tourism & Environment, Ankang University, Ankang 725000, Shaanxi, China;
    2. Academician and Expert Workstation of Shaanxi, Ankang 725000, Shaanxi, China;
    3. Research Center for Rural Revitalization in Southern Shaanxi,Ankang 725000, Shaanxi, China;
    4. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2022-06-29 Online:2022-08-10 Published:2022-08-25

摘要: 对陕西省安康市2010—2020年耕地面积动态变化进行定量评价,并运用主成分回归和GM(1,1)灰色预测模型对耕地面积变化进行预测分析。结果表明,安康市耕地面积在2010—2020年逐年减少,共减少15 773 hm2。主成分回归分析得出影响安康市耕地面积发生变化的主要因素为社会经济因素[常住人口、第一产业产值、第二产业产值、GDP(国内生产总值)、城镇化率、全社会固定资产投资增长率和财政收入];GM(1,1)模型预测安康市的耕地面积于2024年将减少至355 269.4 hm2。在经济快速发展、城镇不断扩展、常住人口增加的背景下,耕地保护、土地整治工作刻不容缓。

关键词: 耕地面积, 主成分回归分析, GM(1, 1)模型, 安康市

Abstract: The dynamic change of cultivated land area in Ankang City from 2010 to 2020 was quantitatively evaluated, and the change of cultivated land area was forecasted and analyzed by using principal component regression and GM (1,1) grey forecasting model. The results showed that the area of arable land in Ankang City decreased year by year from 2010 to 2020, with a total reduction of 15 773 hm2 was reduced. Principal component regression analysis showed that the main factors affecting the change of cultivated land area in Ankang City were socio-economic factors (permanent population, output vaule of primary industry, output vaule of secondary industry, GDP(Gross Domestic Product), urbanization rate, growth rate of total fixed asset investment and fiscal revenue); GM(1,1) model predicted that the area of arable land in Ankang City would be reduced to 355 269.4 hm2 in 2024. With the rapid development of economy, the continuous expansion of cities and the increase of resident population, it is urgent to protect the arable land and improve the land.

Key words: area of cultivated land, principal component regression analysis, GM (1, 1) model, Ankang City

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