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| Titel |
Decomposition analysis of water footprint changes in a water-limited river basin: a case study of the Haihe River basin, China |
| VerfasserIn |
Y. Zhi, Z. F. Yang, X. A. Yin |
| 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. 5 ; Nr. 18, no. 5 (2014-05-06), S.1549-1559 |
| Datensatznummer |
250120342
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| Publikation (Nr.) |
 copernicus.org/hess-18-1549-2014.pdf |
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| Zusammenfassung |
| Decomposition analysis of water footprint (WF) changes, or assessing the
changes in WF and identifying the contributions of factors leading to the
changes, is important to water resource management. Instead of focusing on WF
from the perspective of administrative regions, we built a framework in which
the input-output (IO) model, the structural decomposition analysis (SDA)
model and the generating regional IO tables (GRIT) method are combined to
implement decomposition analysis for WF in a river basin. This framework is
illustrated in the WF in Haihe River basin (HRB) from 2002 to 2007, which is
a typical water-limited river basin. It shows that the total WF in the HRB
increased from 4.3 × 1010 m3 in 2002 to
5.6 × 1010 m3 in 2007, and the agriculture sector makes the
dominant contribution to the increase. Both the WF of domestic products
(internal) and the WF of imported products (external) increased, and the
proportion of external WF rose from 29.1 to 34.4%. The technological
effect was the dominant contributor to offsetting the increase of WF.
However, the growth of WF caused by the economic structural effect and the
scale effect was greater, so the total WF increased. This study provides
insights about water challenges in the HRB and proposes possible strategies
for the future, and serves as a reference for WF management and policy-making
in other water-limited river basins. |
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