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May 6, 2026Hydrological Processes

Spatiotemporal Dynamics and Driving Mechanisms of Ecosystem Water Use Efficiency in a Transitional Basin of Northern China

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Authors

WYWang YangBXBaolin XueJDJiacheng Duan

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Overview

Randomized trial analyzes ecosystem water use efficiency in transitional basins, suggesting ecological management strategies.

Key Points

  • This study aims to understand the spatiotemporal dynamics and driving mechanisms of ecosystem water use efficiency (WUE) in a transitional basin.
  • Analyzed WUE from 2000 to 2020 in the Luanhe River Basin using the PMLV2 dataset.
  • Employed interpretable machine learning (XGBoost-SHAP) and path analysis to explore driving mechanisms.
  • Identified factors such as normalized difference vegetation index and air temperature influencing WUE variability.
  • WUE showed a significant increase of 0.026 gC kg −1 H 2 O −1 yr −1, driven predominantly by a 75.33% contribution from gross primary productivity.
  • Normalized difference vegetation index and air temperature together controlled 86.60% of the WUE spatial heterogeneity.
  • WUE responses to environmental drivers revealed clear thresholds for multiple factors, indicating nonlinear characteristics.

Cite This Study

Yang et al. (2026) studied this question.

synapsesocial.com/papers/69fadaab03f892aec9b1e5d5https://doi.org/10.1002/hyp.70553
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