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| Titel |
Quantitative contribution of climate change and human activities to runoff changes in the Wei River basin, China |
| VerfasserIn |
C. S. Zhan, S. S. Jiang, F. B. Sun, Y. W. Jia, C. W. Niu, W. F. Yue |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 18, no. 8 ; Nr. 18, no. 8 (2014-08-19), S.3069-3077 |
| Datensatznummer |
250120437
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| Publikation (Nr.) |
 copernicus.org/hess-18-3069-2014.pdf |
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| Zusammenfassung |
| Surface runoff from the Wei River basin, the largest tributary of the Yellow
River in China, has dramatically decreased over last 51 years from 1958 to
2008. Climate change and human activities have been identified as the two
main reasons for the decrease in runoff. The study period is split into two
sub-periods (1958–1989 and 1990–2008) using the Mann–Kendall jump test.
This study develops an improved climate elasticity method based on the
original climate elasticity method, and conducts a quantitative assessment of
the impact of climate change and human activities on the runoff decrease in
the Wei River basin. The results from the original climate elasticity method
show that climatic impacts contribute
37–40% to the decrease
in runoff, while human impacts contribute 60–63%. In contrast,
the results from the improved climate elasticity method yield a climatic
contribution to runoff decrease of 22–29% and a human
contribution of 71–78%. A discussion of the simulation
reliability and uncertainty concludes that the improved climate elasticity
method has a better mechanism and can provide more reasonable results. |
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