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| Titel |
Effects of peatland drainage management on peak flows |
| VerfasserIn |
C. E. Ballard, N. McIntyre, H. S. Wheater |
| 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 ; 16, no. 7 ; Nr. 16, no. 7 (2012-07-24), S.2299-2310 |
| Datensatznummer |
250013380
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| Publikation (Nr.) |
 copernicus.org/hess-16-2299-2012.pdf |
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| Zusammenfassung |
| Open ditch drainage has historically been a common land management practice
in upland blanket peats, particularly in the UK. However, peatland drainage
is now generally considered to have adverse effects on the upland
environment, including increased peak flows. As a result, drain blocking has
become a common management strategy in the UK over recent years, although
there is only anecdotal evidence to suggest that this might decrease peak
flows. The change in the hydrological regime associated with the drainage of
blanket peat and the subsequent blocking of drains is poorly understood,
therefore a new physics-based model has been developed that allows the
exploration of the associated hydrological processes. A series of
simulations is used to explore the response of intact, drained and
blocked drain sites at field scales. While drainage is generally found to
increase peak flows, the effect of drain blocking appears to be dependent on
local conditions, sometimes decreasing and sometimes increasing peak flows.
Based on insights from these simulations we identify steep smooth drains as those
that would experience the greatest reduction in field-scale peak flows if blocked and
recommend that future targeted field studies should be focused on examining surface runoff characteristics. |
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