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| Titel |
Hydrological response of streamflow to climate change and human activities in the Yanhe River Basin, China |
| VerfasserIn |
Chuanzhe Li, Hao Wang, Fuliang Yu, Dayong Qin, Denghua Yan, Lu Zhang |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250031923
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| Zusammenfassung |
| The Yanhe River Basin (YRB), located in the Loess Plateau, China. Because of climate
change, population growth and fast economic development, the regional water environment
has changed obviously, and the surface runoff has decreased. The YRB contributes
significantly to the total sediment yield in the Yellow River. In order to control the severe soil
erosion in the YRB, a great number of water and soil conservation measures including
terracing, afforestation, and construction of sediment-trapping dams have been implemented
since the 1950s. It is important to assess the impact of climate change and human activities on
the hydrology and water resources of the YRB and to provide a scientific basis for future
water resources allocation. The nonparametric Mann-Kendall test and the Pettitt test are
used to identify trends and change points in the streamflow records. The SIMHYD
hydrological model is used to assess the streamflow response to climate change and
human activities in the YRB in this study. The results show that the change points in
streamflow occurred in 1972. The streamflow in the YRB has decreased by 35% from
1972 to 2003 compared with the period from 1952 to 1971. Both climate change
and human activities are main factors to affect the changes of streamflow in the
YRB. The impact of human activites is greater than climate change after 1972.
The climate effects accounted for about 38% of total streamflow changes, and the
effects of human activities on streamflow accounted for about 62% in the YRB. |
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