气候变化领域集成服务门户(CCPortal): Impact Classification of Future Land Use and Climate Changes on Flow Regimes in the Yellow River Source Region, China

CCPortal

DOI	10.1029/2020JD034064
	Impact Classification of Future Land Use and Climate Changes on Flow Regimes in the Yellow River Source Region, China
	Wang W.; Zhang Y.; Geng X.; Tang Q.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:13
英文摘要	Traditional impact assessments of future changes on flow regimes mainly focus on streamflow magnitude and static land use, which are insufficient to capture entire characteristics of flow regime variations and future land use change. In this study, 18 flow regime metrics are adopted to fully characterize the streamflow hydrograph. The future changes are considered, including land use scenario in 2025 predicted by the Cellular Automata-Markov (CA-Markov), and climate change scenarios under three representative concentration pathways (RCPs) (i.e., RCP2.6, RCP4.5, and RCP8.5) obtained from five general circulation models (GCMs) for the period 2021–2030. Regional impacts of future land use and climate changes on flow regimes in the Yellow River Source Region are simulated and identified using distributed hydrological modeling and spatial classification. Results show that the increases in unused land (14.16%), and decreases in grassland (2.54%), glacier and snow cover (62.85%) are remarkable for the period 1980–2025. The flow regimes will be highly impacted in the source region for the RCP2.6 and RCP8.5 scenarios, but in the middle stream and downstream regions for the RCP4.5 scenario. Both the future land use and climate changes will increase flow magnitude for most regions, but their impacts on other flow regime metrics are not homogeneous. The climate change will play the dominant role in the flow regime variations, while the land use change will highly affect mean pre-flood runoff, frequency and duration of high flow events, and mean rates of positive and negative changes. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Cellular Automata-Markov; climate change; Flow regimes; hydrological model; land use change; Yellow River Source Region
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237166
作者单位	Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Wang W.,Zhang Y.,Geng X.,et al. Impact Classification of Future Land Use and Climate Changes on Flow Regimes in the Yellow River Source Region, China[J],2021,126(13).
APA	Wang W.,Zhang Y.,Geng X.,&Tang Q..(2021).Impact Classification of Future Land Use and Climate Changes on Flow Regimes in the Yellow River Source Region, China.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Wang W.,et al."Impact Classification of Future Land Use and Climate Changes on Flow Regimes in the Yellow River Source Region, China".Journal of Geophysical Research: Atmospheres 126.13(2021).