Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR027349 |
Global changes in baseflow under the impacts of changing climate and vegetation | |
Xuejin Tan; Bingjun Liu; Xuezhi Tan | |
2020-08-03 | |
发表期刊 | Water Resources Research
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出版年 | 2020 |
英文摘要 | Understanding the impacts of climate change and human activities on hydrological processes, especially the baseflow, is vital for sustainable water resource management. We analyzed the global changes in baseflow and BFI for 2374 global streamflow stations from 1970 to 2016 to examine their associations with precipitation, temperature, terrestrial water storage (TWS), normalized difference vegetation index (NDVI) representing the vegetation regimes, potential evapotranspiration (PET) and a humidity index‐precipitation/potential evapotranspiration (HI). Results showed that changes in both baseflow and baseflow index (BFI) are significantly region‐dependent in continents, due to spatial differences of changes in climate and vegetation that determines the baseflow generation. Seasonal baseflow changed slightly while seasonal BFI varied greatly, partly due to the shift from snowfall to rainfall, and warming effects on glacial retreat and the timing of snowmelt. The multi‐basin baseflow elasticity analyses show that baseflow (BFI) was highly sensitive to changes in NDVI, precipitation, and temperature (temperature and PET). The multivariate regression analyses show that globally, changes in precipitation and TWS contributed to the majority (64.8% and 20.2%) of changes in baseflow, while changes in HI, PET, and precipitation contributed to the majority (30.3%, 28.9%, and 27.5%) of changes in BFI. The spatially varying interaction between climate, vegetation, and baseflow implies that regional adaptation of water resources utilization to climate change should consider the regional shifts in vegetation. This study quantified the elasticity and relative contribution of changes in geographic factors to changes in baseflow and BFI around the world and could inform practices for sustainable water management. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/287751 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Xuejin Tan,Bingjun Liu,Xuezhi Tan. Global changes in baseflow under the impacts of changing climate and vegetation[J]. Water Resources Research,2020. |
APA | Xuejin Tan,Bingjun Liu,&Xuezhi Tan.(2020).Global changes in baseflow under the impacts of changing climate and vegetation.Water Resources Research. |
MLA | Xuejin Tan,et al."Global changes in baseflow under the impacts of changing climate and vegetation".Water Resources Research (2020). |
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