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应用生态学报 ›› 2025, Vol. 36 ›› Issue (9): 2797-2804.doi: 10.13287/j.1001-9332.202509.029

• 研究论文 • 上一篇    下一篇

雅鲁藏布江流域归一化植被指数变化及其对气候因子的响应

陈江波1,2, 赵媛媛1,2, 丁国栋1,2*, 王学林1,2, 董鹏1,2, 刘雅丹1,2, 卢佳雪1,2   

  1. 1北京林业大学水土保持学院/林业生态工程教育部工程研究中心, 北京 100083;
    2水土保持国家林业和草原局重点实验室, 北京 100083
  • 收稿日期:2025-01-12 接受日期:2025-07-10 出版日期:2025-09-18 发布日期:2026-04-18
  • 通讯作者: *E-mail: dch1999@263.net
  • 作者简介:陈江波,男,2000年生,硕士研究生。主要从事荒漠化防治研究。E-mail:744209893@qq.com
  • 基金资助:
    中国环境科学研究院委托科技项目(2024HXFWSBXY026)

Changes in normalized difference vegetation index in the Yarlung Tsangpo River Basin and its response to climatic factors

CHEN Jiangbo1,2, ZHAO Yuanyuan1,2, DING Guodong1,2*, WANG Xuelin1,2, DONG Peng1,2, LIU Yadan1,2, LU Jiaxue1,2   

  1. 1College of Soil and Water Conservation, Beijing Forestry University/Engineering Research Center of Forestry Ecological Engineering, Ministry of Education, Beijing 100083, China;
    2Key Laboratory of Soil and Water Conservation, National Forestry and Grassland Administration, Beijing 100083, China
  • Received:2025-01-12 Accepted:2025-07-10 Online:2025-09-18 Published:2026-04-18

摘要: 在全球气候变暖背景下,青藏高原生态脆弱区雅鲁藏布江流域的植被响应研究对于制定流域生态保护政策至关重要。本研究基于2000—2022年归一化植被指数(NDVI)数据,结合土地利用及气象资料,采用Sen斜率估计和Kendall显著性检验的方法分析了雅鲁藏布江流域NDVI的时空变化特征,并通过相关性分析揭示了气候驱动机制。结果表明: 2000—2022年间,雅鲁藏布江流域NDVI呈波动上升趋势,83.5%区域呈增长态势,空间分布呈现自上游向下游递减的格局,NDVI随海拔的增加而减小。气候驱动呈现区域分异,上游NDVI与年均气温呈显著正偏相关,中游NDVI与年均降水量呈显著正偏相关,而下游NDVI与气候因子均无显著相关性。本研究结果可为气候变化背景下雅鲁藏布江流域的生态保护和可持续发展提供科学依据。

关键词: 归一化植被指数, 气候因子, 相关性分析, 植被指数

Abstract: Under the context of global warming, research on vegetation response in the ecologically fragile Yarlung Tsangpo River Basin of the Qinghai-Tibet Plateau is crucial for formulating watershed conservation policies. We analyzed the spatiotemporal variations of normalized difference vegetation index (NDVI) in the Yarlung Tsangpo River Basin from 2000 to 2022, combined with land use and meteorological data, by using Sen’s slope estimation and Mann-Kendall test method. We further elucidated the climatic driving mechanisms through correlation analysis. The NDVI in the Yarlung Tsangpo River Basin exhibited a fluctuating upward trend from 2000 to 2022, with 83.5% of the area showing significant increases. Spatially, NDVI displayed a decreasing trend from upstream to downstream regions, with a negative relationship between NDVI values and elevation. Climate drivers were region specific. NDVI in upper basin and mid-basin showed significant positive correlation with mean annual temperature and annual precipitation, respectively. The NDVI in downstream displayed no significant correlations with climatic factors. Our findings would provide scientific basis for ecological protection and sustainable development in the Yarlung Tsangpo River Basin under climate change.

Key words: normalized difference vegetation index, climatic factor, correlation analysis, vegetation index