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This study investigates the spatiotemporal variationsSpatiotemporal Variations of the Normalized Difference Vegetation Index (NDVI)Normalized Difference Vegetation Index (NDVI) in the Jiziwan region of the Yellow River Basin from 2003 to 2023 and explores the impacts of water and thermal conditionsWater and thermal conditions on vegetation dynamics. Results show that NDVINormalized Difference Vegetation Index (NDVI) values are highest in summer and lowest in winter, with a general increasing trend from north to south across the region. Over the study period, NDVINormalized Difference Vegetation Index (NDVI) exhibited an overall upward trend, particularly in the southern and central areas, indicating improved vegetation conditions. Correlation analysis revealed that groundwater storage is a consistent limiting factor for vegetation growth throughout the year, while the effects of precipitation and soil moisture vary seasonally. Thermal factors, including temperature and net solar radiation, also exhibit complex relationships with NDVINormalized Difference Vegetation Index (NDVI), with temperature generally promoting vegetation growth in spring and summer. These findings highlight the importance of considering both water and thermal conditions in vegetation management and ecological restoration efforts in the region.

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Spatiotemporal Variations of NDVI and the Effects of Water and Thermal Conditions in the Jiziwan Region of the Yellow River Basin

  • 会议论文

  • 发表日期：

    2026年

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  • Feng Wang,
  • Guohe Huang,
  • Yongping Li,
  • Yanfeng Li,
  • Yiting Wei,
  • Changping Chen,
  • Zhipeng Xu,
  • Zhirui Yang

摘要

This study investigates the spatiotemporal variationsSpatiotemporal Variations of the Normalized Difference Vegetation Index (NDVI)Normalized Difference Vegetation Index (NDVI) in the Jiziwan region of the Yellow River Basin from 2003 to 2023 and explores the impacts of water and thermal conditionsWater and thermal conditions on vegetation dynamics. Results show that NDVINormalized Difference Vegetation Index (NDVI) values are highest in summer and lowest in winter, with a general increasing trend from north to south across the region. Over the study period, NDVINormalized Difference Vegetation Index (NDVI) exhibited an overall upward trend, particularly in the southern and central areas, indicating improved vegetation conditions. Correlation analysis revealed that groundwater storage is a consistent limiting factor for vegetation growth throughout the year, while the effects of precipitation and soil moisture vary seasonally. Thermal factors, including temperature and net solar radiation, also exhibit complex relationships with NDVINormalized Difference Vegetation Index (NDVI), with temperature generally promoting vegetation growth in spring and summer. These findings highlight the importance of considering both water and thermal conditions in vegetation management and ecological restoration efforts in the region.