 |
| Titel |
Responses of natural runoff to recent climatic variations in the Yellow River basin, China |
| VerfasserIn |
Y. Tang, Q. Tang, F. Tian, Z. Zhang, G. Liu |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 17, no. 11 ; Nr. 17, no. 11 (2013-11-12), S.4471-4480 |
| Datensatznummer |
250085992
|
| Publikation (Nr.) |
 copernicus.org/hess-17-4471-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| The zero-flow phenomenon appeared frequently in the lower reaches of the
Yellow River in China in the 1990s, whereas it has almost disappeared in
recent years. The disappearance of the zero-flow phenomenon should be mainly
attributed to the recent water management practices. However, little is known
about the effects of recent climatic variations on natural runoff. In this
study, we investigated the impacts of climatic variations on natural runoff
above the Huayuankou station. The results indicate that there was little
increase in precipitation, but substantial recovery of natural runoff in the
recent period (2003–2011) compared with the low-flow period (1991–2002).
The recent precipitation was slightly greater (∼2% of the
baseline precipitation in 1960–1990) than precipitation in the low-flow
period. However, the recent natural runoff was much larger (∼14%
baseline runoff) than runoff in the low-flow period. The runoff reduction in
the low-flow period was mainly caused by precipitation decrease. In the
recent period, precipitation accounted for a runoff reduction
(∼21% baseline runoff), whereas net radiation, wind speed, air
temperature, and relative humidity accounted for a runoff increase
(∼7.5% baseline runoff). The spatial pattern of the climatic
variation is a factor influencing the response of runoff to climatic
variations. The reduction in runoff induced by precipitation change was
offset up to half by the impacts of changes in net radiation and wind speed
at most sub-basins in the recent period. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|