 |
| Titel |
Predicting effects of plantation expansion on streamflow regime for catchments in Australia |
| VerfasserIn |
L. Zhang, F. F. Zhao, A. E. Brown |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 16, no. 7 ; Nr. 16, no. 7 (2012-07-16), S.2109-2121 |
| Datensatznummer |
250013368
|
| Publikation (Nr.) |
 copernicus.org/hess-16-2109-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| The effect of plantations on mean annual streamflow is well understood and,
there are robust methods available for assessing the impact. Plantations
also affect streamflow regime, leading to reductions in low flow and
increased number of zero-flow days. Understanding changes in streamflow
regime following plantation expansion is important for developing water
resources and environmental flow strategy. This study evaluated the impacts
of plantations on streamflow regime from 15 catchments in Australia. The
selected catchments range in size from 0.6 to 1136 km2 and represent
different climatic conditions and management practices. The catchments have
at least 20 yr and in most cases 35 yr of continuous daily streamflow
data and well documented plantation records. Catchments with perennial
streamflow in the pre-treatment periods showed relatively uniform reductions
in most flows after plantation expansions, whereas catchments with ephemeral
streamflow showed more dramatic reductions in low flows, leading to an
increased number of zero-flow days. The Forest Cover Flow Change (FCFC)
model was tested using the data from the selected catchments and comparison
of predicted and observed flow duration curves showed that 14 of the 15
catchments have coefficients of efficiency greater than 0.8. The results
indicate that the model is capable of predicting plantation impacts on
streamflow regime. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|