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中国沙漠 ›› 2026, Vol. 46 ›› Issue (2): 277-287.DOI: 10.7522/j.issn.1000-694X.2025.00202

• • 上一篇    

密集生态干预对中国干旱半干旱区植被生产力的影响

安迪(), 张勃(), 张雪盈, 伍哲希   

  1. 西北师范大学 地理与环境科学学院,甘肃 兰州 730070
  • 收稿日期:2025-11-04 修回日期:2025-12-25 出版日期:2026-03-20 发布日期:2026-04-13
  • 通讯作者: 张勃
  • 作者简介:安迪(2000—),女,甘肃肃南人,硕士研究生,主要从事寒旱区生态系统演化与恢复研究。E-mail: 2023212880@nwnu.edu.cn

Implications of intensive ecological intervention for vegetation productivity in arid and semi-arid areas of China

Di An(), Bo Zhang(), Xueying Zhang, Zhexi Wu   

  1. College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,China
  • Received:2025-11-04 Revised:2025-12-25 Online:2026-03-20 Published:2026-04-13
  • Contact: Bo Zhang

摘要:

在全球旱地生态脆弱性加剧的背景下,中国在干旱半干旱区实施了多项生态工程,形成了密集生态干预,但其对植被动态的影响机制尚不明确。本研究基于多源遥感数据,综合运用趋势分析、残差分析等方法,量化了2000—2020年生态工程重叠区植被生产力的变化及其驱动因素。结果表明:研究区植被生产力显著提升,气候呈暖湿化趋势,在生态工程重叠区尤为突出。驱动机制上,密集生态干预在适宜水热条件下具有协同增益效应。气候与非气候因素的共同作用是促进植被生产力增长的主导力量,且随着生态工程密度的增加,非气候因素的贡献显著增强,植被对气候波动的直接响应降低。本研究为优化生态工程的空间布局、实施基于水热条件的差异化恢复策略提供了科学依据。

关键词: 植被生产力, 生态工程重叠区, 驱动机制, 干旱半干旱区

Abstract:

Against the backdrop of increasing ecological vulnerability in global drylands, China has implemented multiple ecological projects in its arid and semi-arid regions, forming a pattern of intensive ecological intervention. However, the mechanisms through which this intervention affects vegetation dynamics remain unclear. Based on multi-source remote sensing data and integrated methods such as trend analysis and residual analysis, this study quantified changes in vegetation productivity and their driving factors in ecological project overlapping areas from 2000 to 2020. The results show a significant increase in vegetation productivity across the study area, accompanied by a warming-wetting climatic trend, which is particularly pronounced in ecological project overlapping areas. In terms of driving mechanisms, intensive ecological intervention exhibits a synergistic gain effect under suitable hydrothermal conditions. The combined effect of climatic and non-climatic factors serves as the dominant force promoting vegetation productivity growth. Furthermore, as project density increases, the contribution of non-climatic factors strengthens significantly, while the direct response of vegetation to climatic fluctuations diminishes. This study provides a scientific basis for optimizing the spatial layout of ecological projects and implementing differentiated restoration strategies based on hydrothermal conditions.

Key words: vegetation productivity, ecological project overlapping areas, driving mechanisms, arid and semi-arid area

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