湖北农业科学 ›› 2021, Vol. 60 ›› Issue (9): 157-163.doi: 10.14088/j.cnki.issn0439-8114.2021.09.032

• 经济·管理 • 上一篇    下一篇

基于演化PSR模型的喀斯特地区土地生态安全评价——以广西永福县为例

杨昌明, 陆汝成, 林树高   

  1. 南宁师范大学自然资源与测绘学院,南宁 533000
  • 收稿日期:2020-06-10 发布日期:2021-05-14
  • 通讯作者: 陆汝成(1972-),男,广西临桂人,教授,硕士生导师,博士,主要从事土地利用、土地规划与区域发展研究,(电子信箱)710912213@qq.com。
  • 作者简介:杨昌明(1993-),男,广西隆林人,在读硕士研究生,研究方向为土地利用与区域发展,(电话)18178629947(电子信箱)1163643968@qq.com。
  • 基金资助:
    国家自然科学基金项目(41661109)

Evaluation of land ecological security in Karst area based on evolutionary PSR model:A case study of Yongfu county,Guangxi

YANG Chang-ming, LU Ru-cheng, LIN Shu-gao   

  1. School of Natural Resources and Surveying,Nanning Normal University,Nanning 533000,China
  • Received:2020-06-10 Published:2021-05-14

摘要: 以永福县为例,基于演化PSR模型,结合EES和PRED模型框架构建评价指标体系,运用熵值法与变异系数法确定指标权重,利用综合指数法分析其土地生态安全变化趋势,并运用灰色关联法探究其影响因素。结果表明,永福县2006—2018年土地生态安全水平总体呈上升趋势,安全等级由较不安全向较安全转变,2006—2010年土地生态安全综合评分起伏变化较大,2010—2018年总体呈上升趋势;各子系统安全指数总体呈波动上升趋势,但一直处于不安全与较不安全状态;人口压力、经济压力、环境压力及资源状态是影响土地生态安全水平的主要因素。

关键词: 土地生态安全评价, PSR模型, 影响因素, 喀斯特地区, 永福县

Abstract: Taking Yongfu county as research object, the evaluation index system was constructed based on the evolutionary PSR model and the framework of EES and PRED models. The weight of indexes was determined by entropy method and coefficient of variation method, and the change trend of land ecological security was analyzed by comprehensive index method, and the influencing factors were explored by grey correlation method. The results show that the land ecological security level of Yongfu county is on the whole on the rise from 2006 to 2018, and the safety level is changing from less safe to more safe. The comprehensive score of land ecological security fluctuates greatly from 2006 to 2010, and it is on the whole on the rise from 2010 to 2018. The safety index of each subsystem is generally fluctuating and rising, but it has been in a state of insecurity and less security. Population pressure, economic pressure, environmental pressure and resource state are the main factors affecting the level of land ecological security.

Key words: land ecological security evaluation, PSR model, influence factor, Karst area, Yongfu county

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