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| Titel |
Quantifying the effect of land use and land cover changes on green water and blue water in northern part of China |
| VerfasserIn |
X. Liu, L. Ren, F. Yuan, V. P. Singh, X. Fang, Z. Yu, W. Zhang |
| 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 ; 13, no. 6 ; Nr. 13, no. 6 (2009-06-12), S.735-747 |
| Datensatznummer |
250011893
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| Publikation (Nr.) |
 copernicus.org/hess-13-735-2009.pdf |
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| Zusammenfassung |
| Changes in land use and land cover (LULC) have been occurring at an
accelerated pace in northern parts of China. These changes are significantly
impacting the hydrology of these parts, such as Laohahe Catchment. The
hydrological effects of these changes occurring in this catchment were
investigated using a semi-distributed hydrological model. The
semi-distributed hydrological model was coupled with a two-source potential
evaportranspiration (PET) model for simulating daily runoff. Model parameters
were calibrated using hydrometeorological and LULC data for the same period.
The LULC data were available for 1980, 1989, 1996 and 1999. Daily streamflow
measurements were available from 1964 to 2005 and were divided into 4
periods: 1964–1979, 1980–1989, 1990–1999 and 2000–2005. These periods
represented four different LULC scenarios. Streamflow simulation was
conducted for each period under these four LULC scenarios. The results showed
that the change in LULC influenced evapotranspiration (ET) and runoff. The
LULC data showed that from 1980 to 1996 grass land and water body had
decreased and forest land and crop land had increased. This change caused the
evaporation from vegetation interception and vegetation transpiration to
increase, whereas the soil evaporation tended to decrease. Thus during the
period of 1964–1979 the green water or ET increased by 0.95%, but the
blue water or runoff decreased by 8.71% in the Laohahe Catchment. |
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