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Characterizing anthropogenic disturbance for sustainable hydrological regimes based on information Theory
Journal of Hydrology ( IF 5.9 ) Pub Date : 2024-11-30 , DOI: 10.1016/j.jhydrol.2024.132449 Tian Lan, Xinyue Du, Wenjing Li, Hongbo Zhang, Siqi Zhong, Chongfeng Ren, Yongqin David Chen, Chong-Yu Xu
Journal of Hydrology ( IF 5.9 ) Pub Date : 2024-11-30 , DOI: 10.1016/j.jhydrol.2024.132449 Tian Lan, Xinyue Du, Wenjing Li, Hongbo Zhang, Siqi Zhong, Chongfeng Ren, Yongqin David Chen, Chong-Yu Xu
Anthropogenic activities pose significant threats to hydrological regimes, leading to water resource exhaustion through intensive streamflow consumption. To identify regions where anthropogenic activities have a significant impact on streamflow under conditions of non-stationarity and non-linearity, this study developed the Anthropogenic Disturbance for Sustainable Hydrological Regimes (ADS) index using Information Theory. First, an identification framework is proposed to identify and verify the intricate connections between anthropogenic factors and streamflow based on multiple techniques. Then, Mutual Information theory was used to quantify the anthropogenic disturbances on streamflow caused by specific anthropogenic factors. A nested weighting scheme based on the Information Gain Ratio was further designed to determine the composite effects of anthropogenic activities on hydrological sustainability and to determine their positive or negative impacts through trend detection. The proposed index and framework are applied to case studies of the Wei River Basin in China and the Illinois River Basin in the USA. The results show that anthropogenic factors such as impervious surface ratio (ISR) and nighttime light (NTL) have significant temporal and spatial associations with streamflow variations, playing a critical role in shaping hydrological regimes. In the Wei River Basin, anthropogenic disturbances are increasing under non-stationary conditions, with ADS values ranging from 0.3 to 0.4. In contrast, only the Du Page sub-basin in the Illinois River Basin shows a similar increasing trend, while other sub-basins exhibit a decreasing trend, with ADS values ranging from −0.2 to −0.5. The comparative analysis of the two river basins suggests that differences in anthropogenic disturbances may be attributed to their respective economic development stages. The ADS index also reveals spatial heterogeneity in the Illinois River Basin, highlighting higher disturbances in economically developed northeastern areas compared to the less disturbed, vegetation-rich southwestern regions. Overall, the ADS index effectively maps the complex nonlinear interactions between anthropogenic activities and streamflow. Utilizing the insights from this index, targeted management strategies are recommended to achieve sustainable water resource utilization.
更新日期：2024-11-30
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