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Updated: Jun 19, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
Spatiotemporal geographically weighted regression analysis for runoff variations in the Weihe River Basin
Jingjing Fan1, Dongnan Wang1, Yue Zhao1
1Hebei Key Laboratory of Intelligent Water Conservancy, College of Water Resources and Hydropower, Hebei University of Engineering, Handan, 056038, China.
Vegetation changes significantly impact runoff in the Weihe River Basin (WRB), with underlying surface changes accounting for 60% of runoff reduction. Spatial non-stationarity in vegetation dynamics is a key driver of these runoff alterations.
Area of Science:
- Hydrology
- Environmental Science
- Geospatial Analysis
Background:
- Runoff variability is a critical concern in river basins.
- Understanding the impact of vegetation changes on hydrological processes is essential for water resource management.
Purpose of the Study:
- To investigate the effects of vegetation changes on runoff in the Weihe River Basin (WRB).
- To develop recommendations for improving runoff in the WRB.
- To analyze the spatial non-stationarity of vegetation variations and their impact on runoff.
Main Methods:
- Developed a spatiotemporal geographic autocorrelation weighted regression analysis (SGAWRA) approach.
- Investigated the dynamic response of vegetation to climate and human activity.
- Analyzed spatial non-stationarity and its implications for runoff variability.
Main Results:
- Vegetation changes, particularly underlying surface changes, are the leading cause (approx. 60%) of runoff attenuation in the WRB.
- The study revealed significant spatial and temporal non-stationarity in the WRB's hydrological processes.
- Areas with a growing Normalized Difference Vegetation Index (NDVI) trend cover over 50% of the basin.
Conclusions:
- Vegetation changes are a primary driver of runoff changes in the WRB.
- Spatial non-stationarity in vegetation dynamics significantly influences runoff variability.
- The findings support targeted recommendations for enhancing runoff in the Weihe River Basin.
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