干旱区生态环境知识资源中心(Arid): Streamflow responses to climate change and LUCC in a semi-arid watershed of Chinese Loess Plateau

Arid

	Streamflow responses to climate change and LUCC in a semi-arid watershed of Chinese Loess Plateau
	Li Qingyun; Sun Yanwei; Yuan Wenlin; Lyu Subing; Wan Fang
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2017
卷号	9 期号:4 页码:609-621
英文摘要	Climate change and Land Use/Cover Change (LUCC) have been identified as two primary factors affecting watershed hydrological regime. This study analyzed the trends of streamflow, precipitation, air temperature and potential evapotranspiration (PET) from 1962 to 2008 in the Jihe watershed in northwestern Loess Plateau of China using the Mann-Kendall test. The streamflow responses to climate change and LUCC were quantified independently by the elasticity method. The results show that the streamflow presented a dramatic decline with a turning point occurred in 1971, while the precipitation and PET did not change significantly. The results also show that the temperature rose markedly especially since 1990 s with an approximate increase of 1.74°C over the entire research period (1962-2008). Using land use transition matrix, we found that slope cropland was significantly converted to terrace between 1970 s and 1990 s and that forest cover increased relatively significantly because of the Grain for Green Project after 2000. The streamflow reduction was predominantly caused by LUCC and its contribution reached up to 90.2%, while the contribution of climate change to streamflow decline was only 9.8%. Although the analytical results between the elasticity method and linear regression model were not satisfactorily consistent, they both indicated that LUCC (human activity) was the major factor causing streamflow decline in the Jihe watershed from 1962 to 2008.
英文关键词	streamflow LUCC climate change Mann-Kendall test elasticity method Loess Plateau
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6020596
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335834
作者单位	Li Qingyun, School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China.; Sun Yanwei, School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China.; Lyu Subing, School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China.; Wan Fang, School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China.; Yuan Wenlin, School of Water Conservancy and Environment, Zhengzhou University, Zhengzhou, Henan 450001, China.
推荐引用方式 GB/T 7714	Li Qingyun,Sun Yanwei,Yuan Wenlin,et al. Streamflow responses to climate change and LUCC in a semi-arid watershed of Chinese Loess Plateau[J],2017,9(4):609-621.
APA	Li Qingyun,Sun Yanwei,Yuan Wenlin,Lyu Subing,&Wan Fang.(2017).Streamflow responses to climate change and LUCC in a semi-arid watershed of Chinese Loess Plateau.Journal of Arid Land,9(4),609-621.
MLA	Li Qingyun,et al."Streamflow responses to climate change and LUCC in a semi-arid watershed of Chinese Loess Plateau".Journal of Arid Land 9.4(2017):609-621.