NDLI: Streamflow responses to climate change and LUCC in a semi-arid watershed of Chinese Loess Plateau

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Streamflow responses to climate change and LUCC in a semi-arid watershed of Chinese Loess Plateau

Content Provider	Springer Nature Link
Author	Lyu, Subing Li, Qingyun Sun, Yanwei Wan, Fang Yuan, Wenlin
Copyright Year	2017
Abstract	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 1990s 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 1970s and 1990s 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.
Starting Page	609
Ending Page	621
Page Count	13
File Format	PDF
ISSN	16746767
Journal	Journal of Arid Land
Volume Number	9
Issue Number	4
e-ISSN	21947783
Language	English
Publisher	Science Press
Publisher Date	2017-06-30
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	elasticity method Sustainable Development Physical Geography LUCC Mann-Kendall test streamflow climate change Loess Plateau Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Water Science and Technology Management, Monitoring, Policy and Law

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