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  11. [variation Characteristics And Its Driving Forces Of Fractional Vegetation Cover In The Shaanxi Section Of The Yellow River Basin Under The Background Of The Grain For Green Program]

[Variation Characteristics and Its Driving Forces of Fractional Vegetation Cover in the Shaanxi Section of the Yellow River Basin Under the Background of the Grain for Green Program]

Zu-Xin He1, Guang-Po Geng1, Ruo-Lin Zheng1

  • 1College of Geomatics, Xi'an University of Science and Technology, Xi'an 710054, China.

Huan Jing Ke Xue= Huanjing Kexue
|December 19, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Fractional vegetation cover (FVC) in the Yellow River Basin

Area of Science:

  • Ecological remote sensing
  • Environmental science
  • Geographic information systems

Background:

  • The Shaanxi section of the Yellow River Basin is ecologically fragile.
  • The Grain for Green Program significantly impacts vegetation cover.
  • Understanding spatiotemporal FVC variations is crucial for sustainable development.

Purpose of the Study:

  • To analyze the spatiotemporal variations of fractional vegetation cover (FVC) in the Shaanxi section of the Yellow River Basin from 2000 to 2020.
  • To identify the primary driving factors influencing FVC changes.
  • To provide insights for ecological protection policies.

Main Methods:

  • Google Earth Engine (GEE) platform for FVC estimation using MODIS NDVI data and a dimidiate pixel model.
  • Theil-Sen median trend analysis, Mann-Kendall test, and Hurst index for trend and sustainability analysis.
Keywords:
GeodetectorGrain for Green ProgramHurst indexShaanxi section of the Yellow River Basin

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  • Geodetector model to identify driving factors, including natural, social, and economic data.

    • Main Results:

    • FVC in the Shaanxi section increased by 0.51%·a⁻¹ from 2000-2020, exceeding the Yellow River Basin average.
    • 75.17% of the region showed an increasing FVC trend, with significant improvements in specific areas.
    • Precipitation and land use change were key drivers, with afforestation strongly correlating with FVC increases.
    • Interactions between factors, particularly precipitation and temperature, had a significant impact on FVC differentiation.

    Conclusions:

    • Vegetation cover has significantly improved in the Shaanxi section of the Yellow River Basin.
    • Precipitation and land use changes, influenced by the Grain for Green Program, are primary drivers of FVC.
    • Future FVC trends suggest continued improvement, highlighting the effectiveness of ecological restoration efforts.
    • Understanding complex interactions of factors is vital for effective ecological policy formulation.
    fractional vegetation cover（FVC）
    spatial and temporal changes