Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR028394 |
Impact of vegetation physiology and phenology on watershed hydrology in a semi‐arid watershed in the Pacific Northwest in a changing climate | |
Bowen Zhu; Maoyi Huang; Yanyan Cheng; Xianhong Xie; Ying Liu; Gautam Bisht; Xingyuan Chen | |
2021-02-02 | |
发表期刊 | Water Resources Research
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出版年 | 2021 |
英文摘要 | Changes in carbon dioxide (CO2) concentration and nitrogen (N) availability can affect land surface processes by regulating physiological (e.g., stomatal opening and closure) and phenological (e.g., leaf area index) responses, which in turn influence terrestrial water cycle dynamics. In this study, we apply the Community Land Model version 5 to investigate how projected environment changes in the 21st century can affect the hydrologic budget in the Upper Columbia‐Priest Rapids (UCPR) watershed, a typical semi‐arid watershed located in the Pacific Northwest of the United States. Nine numerical experiments were performed to quantifying contributions of climate change, CO2 concentration, and N availability to the watershed hydrologic budget under two Representative Concentration Pathways (RCPs) (i.e., RCP4.5 and RCP8.5). Our results show that compared to its historical value, evapotranspiration (ET) over the watershed increases by 37 and 30 mm yr‐1 by the end of the century under RCP4.5 and RCP8.5 in responses to changes in meteorological forcing, and further increases by 40 and 28 mm yr‐1 when elevated CO2 concentrations are accounted for. The effect of N availability on the water balance is insignificant. Such an increase in ET is contributed by the overall reduction in stomatal resistance and increase in leaf area index of vegetation in response to increases in precipitation and CO2 concentration. However, corn‐dominated regions can respond to these changes differently, caused by its increased stomatal resistance under an elevated CO2 concentration with limited N. Our results demonstrate physiological and phenological responses can modulate watershed hydrologic budgets under projected future changes. |
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/313854 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Bowen Zhu,Maoyi Huang,Yanyan Cheng,等. Impact of vegetation physiology and phenology on watershed hydrology in a semi‐arid watershed in the Pacific Northwest in a changing climate[J]. Water Resources Research,2021. |
APA | Bowen Zhu.,Maoyi Huang.,Yanyan Cheng.,Xianhong Xie.,Ying Liu.,...&Xingyuan Chen.(2021).Impact of vegetation physiology and phenology on watershed hydrology in a semi‐arid watershed in the Pacific Northwest in a changing climate.Water Resources Research. |
MLA | Bowen Zhu,et al."Impact of vegetation physiology and phenology on watershed hydrology in a semi‐arid watershed in the Pacific Northwest in a changing climate".Water Resources Research (2021). |
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