Yin et al. (2025) Spatiotemporal Patterns of Climate-Vegetation Regulation of Soil Moisture with Phenological Feedback Effects Using Satellite Data

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Identification

Journal: Remote Sensing
Year: 2025
Date: 2025-11-14
Authors: Hanmin Yin, Xiaohan Liao, Huping Ye, Jie Bai, Wentao Yu, Yue Li, Junbo Wei, Jincheng Yuan, Qiang Liu
DOI: 10.3390/rs17223714

Research Groups

Not provided in the given text.

Short Summary

This study comprehensively analyzes global patterns and drivers of rootzone and surface soil moisture and leaf area index (LAI) across different seasons and climate zones from 1982 to 2020. It reveals a shift from soil drying to wetting trends from 2000-2020, with LAI inducing moistening, while climatic factors like solar radiation and precipitation show varying dominance across depths and seasons.

Objective

To provide a comprehensive analysis of global patterns in rootzone and surface soil moisture and leaf area index (LAI) across different seasons and climate zones.
To investigate how climatic factors and LAI influence soil moisture variations and quantify their dominant contributions.
To assess the feedback effects of vegetation phenology (using peak of growing season and maximum LAI) on soil moisture dynamics.

Study Configuration

Spatial Scale: Global, analyzed across different climate zones (e.g., arid, temperate, tropical).
Temporal Scale: 1982 to 2020 (39 years), with analysis of seasonal variations and two distinct periods (1982–1999 and 2000–2020).

Methodology and Data

Models used: Not explicitly mentioned; analysis based on observations.
Data sources: Satellite observations (for soil moisture and leaf area index).

Main Results

The greening trend (LAI increases) from 2000 to 2020 was significantly stronger than that observed during 1982–1999 across all seasons and climate zones.
Both rootzone and surface soil moisture shifted from a decreasing (drying) trend (1982–1999) to an increasing (wetting) trend (2000–2020).
From 1982 to 2020, LAI induced moistening trends in both surface and rootzone soil moisture.
In arid and temperate zones, precipitation drove rootzone soil moisture increases only during the summer.
Solar radiation induced the strongest surface soil drying in tropical summers, with a rate of −0.04 × 10⁻³ m³·m⁻³ / (W·m⁻²).
For rootzone soil moisture, LAI dominated over individual climatic factors in winter and spring globally. In contrast, solar radiation became the primary driver during summer and autumn, followed by precipitation.
For surface soil moisture, precipitation exhibited the strongest control in winter, but solar radiation surpassed it as the dominant factor from spring through autumn.
In tropical autumn, the sensitivity of rootzone soil moisture to the peak of growing season (POS) was approximately 6.83 × 10⁻⁷ m³·m⁻³·s⁻¹ (0.059 m³·m⁻³·d⁻¹), and to maximum LAI (LAIMAX) was 0.256 m³·m⁻³ / (m²·m⁻²).
In tropical autumn, the sensitivity of surface soil moisture to POS was approximately 6.02 × 10⁻⁷ m³·m⁻³·s⁻¹ (0.052 m³·m⁻³·d⁻¹), and to LAIMAX was 0.232 m³·m⁻³ / (m²·m⁻²).

Contributions

Deepens the understanding of how climate and vegetation regulate soil moisture across different climate zones and seasons.
Provides a scientific basis for improving global soil moisture prediction models and managing water resource risks in the context of climate change.

Funding

Not provided in the given text.

Citation

@article{Yin2025Spatiotemporal,
  author = {Yin, Hanmin and Liao, Xiaohan and Ye, Huping and Bai, Jie and Yu, Wentao and Li, Yue and Wei, Junbo and Yuan, Jincheng and Liu, Qiang},
  title = {Spatiotemporal Patterns of Climate-Vegetation Regulation of Soil Moisture with Phenological Feedback Effects Using Satellite Data},
  journal = {Remote Sensing},
  year = {2025},
  doi = {10.3390/rs17223714},
  url = {https://doi.org/10.3390/rs17223714}
}

Original Source: https://doi.org/10.3390/rs17223714