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中国沙漠 ›› 2025, Vol. 45 ›› Issue (5): 230-240.DOI: 10.7522/j.issn.1000-694X.2025.00129

• • 上一篇    

毛乌素沙地景观生态风险时空演变及驱动力

李思琪1(), 王海兵1,2,3(), 袁晓飞1, 敖胡日查1, 杨皓钦1   

  1. 1.内蒙古农业大学,沙漠治理学院,内蒙古 呼和浩特 010018
    2.内蒙古农业大学,旱区水工程生态环境全国重点实验室,内蒙古 呼和浩特 010018
    3.内蒙古农业大学,内蒙古自治区风沙物理与防沙治沙工程重点实验室,内蒙古 呼和浩特 010018
  • 收稿日期:2025-04-30 修回日期:2025-06-27 出版日期:2025-09-20 发布日期:2025-09-27
  • 通讯作者: 王海兵
  • 作者简介:李思琪(2000—),女,内蒙古锡林浩特人,硕士研究生,主要从事水土保持与荒漠化防治研究。E-mail: 1411946387@qq.com
  • 基金资助:
    内蒙古自治区科技创新重大示范工程“揭榜挂帅”项目(2024JBGS00200304);内蒙古自治区高等学校创新团队项目(NMGIRT2408);内蒙古自治区直属高校基本科研业务费项目(BR220101)

Temporal and spatial evolution of landscape ecological risks and driving forces in the Mu Us Sandy Land

Siqi Li1(), Haibing Wang1,2,3(), Xiaofei Yuan1, Huricha Ao1, Haoqin Yang1   

  1. 1.School of Desert Management /, Inner Mongolia Agricultural University,Hohhot 010018,China
    2.National Key Laboratory of Arid Zone Water Engineering Ecological Environment /, Inner Mongolia Agricultural University,Hohhot 010018,China
    3.Key Laboratory of Wind Sand Physics and Sand Control Engineering in Inner Mongolia Autonomous Region, Inner Mongolia Agricultural University,Hohhot 010018,China
  • Received:2025-04-30 Revised:2025-06-27 Online:2025-09-20 Published:2025-09-27
  • Contact: Haibing Wang

摘要:

本文以毛乌素沙地为研究对象,以8期遥感数据为基础,构建景观生态风险指数,融合景观格局指数与地理探测器模型,揭示沙地景观生态风险时空演变规律、自然与人为因素交互作用对生态风险的影响过程。结果表明:1990—2023年,沙地景观变化显著,草地面积增加5.70×103 km2,未利用地面积减少8.01×103 km2;随着“三北”工程、退耕还林还草等国家级生态工程的启动,沙地低风险区集中分布在神木市、乌审旗等地,面积增加2.04×104 km2,高风险区集中分布在鄂托克旗、鄂托克前旗,面积缩减0.05×103 km2;自然因素中NDVI(贡献率30%以上)与年降水量主导风险演变,社会经济因素中人口密度影响持续增强,二者交互作用显著提升风险解释力;“三北”防护林等生态工程促使中高生态风险区减少57.3%,验证了政策干预对脆弱区生态修复的长期有效性,为风沙防治与生态安全屏障建设提供理论支撑与数据支撑。

关键词: 景观生态风险, 时空演变, 地理探测器, 驱动因素, 毛乌素沙地

Abstract:

This article takes the Mu Su Sandy Land as the research object, based on 8 periods of remote sensing data, constructs a landscape ecological risk index, integrates landscape pattern index and geographic detector model, and reveals the spatiotemporal evolution law of desert landscape ecological risk, as well as the impact process of the interaction between natural and human factors on ecological risk. The results showed that from 1990 to 2023, there were significant changes in sandy landscape, with an increase of 5.70×103 km2 in grassland area and a decrease of 8.01×103 km2 in unused land area; With the launch of national ecological projects such as the "Three North" project and the return of farmland to forests and grasslands, low-risk areas of sandy land are concentrated in Shenmu City, Wushen Banner and other places, with an increase of 2.04×104 km2 in area. High risk areas are concentrated in Etuoke Banner and Etuoke Front Banner where the sandy land is located, with a decrease of 0.05×103 km2 in area; NDVI (with a contribution rate of over 30%) and annual precipitation dominate the risk evolution in natural factors, while the impact of population density in socio-economic factors continues to increase. The interaction between the two significantly enhances the explanatory power of risk; Ecological projects such as the Three-North Shelterbelt Program have reduced the medium and high ecological risk areas by 57.3%, verified the long-term effectiveness of policy intervention on ecological restoration in vulnerable areas, and provided theoretical and data support for sand control and ecological security barrier construction.

Key words: landscape ecological risk, spatial and temporal evolution, geoprobe, driving factors, the Mu Us Sandy Land

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