湖北农业科学 ›› 2025, Vol. 64 ›› Issue (10): 54-60.doi: 10.14088/j.cnki.issn0439-8114.2025.10.009

• 资源·环境 • 上一篇    下一篇

黄河流域(河南段)景观生态风险时空演变及驱动因素

闫晓伟   

  1. 河南理工大学测绘与国土信息工程学院,河南 焦作 454000
  • 收稿日期:2025-04-03 出版日期:2025-10-25 发布日期:2025-11-14
  • 作者简介:闫晓伟(1996-),男,山西晋中人,在读硕士研究生,研究方向为土地利用及生态学,(电子信箱)1062386399@qq.com。
  • 基金资助:
    河南省高等学校重点科研项目(15A210009)

Spatio-temporal evolution and driving factors of landscape ecological risks in the Yellow River Basin (Henan section)

YAN Xiao-wei   

  1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000,Henan, China
  • Received:2025-04-03 Published:2025-10-25 Online:2025-11-14

摘要: 探究黄河流域(河南段)景观生态风险时空演变特征及驱动机制对促进流域生态保护和可持续发展具有重要意义。以多期土地利用数据为基础,基于景观格局指数构建景观生态风险评估模型,剖析流域景观生态风险时空变化规律,借助地理探测器分析景观生态风险驱动因素。结果显示,1990—2020年,研究区景观格局整体呈破碎化程度降低、异质性减弱、斑块形状趋于规则化以及景观要素分布更加均衡的特征;研究区风险等级以中低风险和中风险为主,景观生态风险趋于好转;生态风险呈西部地区随时间推移趋于下降、中东部地区随时间推移趋于上升的空间演变规律;自然因子对景观生态风险的影响大于社会因子,降雨和高程是主要影响因子,因子交互对景观生态风险的空间分异特征有明显增强效应。

关键词: 景观生态风险, 土地利用, 地理探测, 黄河流域(河南段)

Abstract: It was of great significance to explore the spatio-temporal evolution characteristics and driving mechanism of landscape ecological risks in the Yellow River Basin (Henan section) to promote the ecological protection and sustainable development of the basin. Based on multi-period land use data, a landscape ecological risk assessment model was constructed using the landscape pattern index to analyze the spatio-temporal variation of landscape ecological risk in the basin. The driving factors of landscape ecological risk were analyzed using a geographic detector. The results showed that from 1990 to 2020, the overall landscape pattern in the study area was characterized by reduced fragmentation, decreased heterogeneity, more regular patch shapes, and a more balanced distribution of landscape elements. The risk levels in the study area were predominantly medium-low and medium, indicating a general improvement in landscape ecological risk. Ecological risk showed a tendency to decrease over time in the western regions, while it increased in the mid-eastern region. Natural factors had a greater impact on landscape ecological risk than social factors, with rainfall and elevation being the primary influencing factors. The interaction of factors significantly enhanced the spatial differentiation characteristics of landscape ecological risk.

Key words: landscape ecological risks, land use, geographical detection, Yellow River Basin (Henan section)

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