Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed
Runoff generation under various natural conditions has often been studied in forested watersheds for a long time. In 1967, Hewlett designed a variable source area model. The model is based on the expansion and shrinkage of variable source areas and consequent changes in a drainage network during a d...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2010-07-01
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| Series: | Journal of Forest Science |
| Subjects: | |
| Online Access: | https://jfs.agriculturejournals.cz/artkey/jfs-201007-0002_effects-of-drainage-treatment-and-stand-growth-on-changes-in-runoff-components-from-a-forested-watershed.php |
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| author | V. Černohous F. Šach D. Kacálek |
| author_facet | V. Černohous F. Šach D. Kacálek |
| author_sort | V. Černohous |
| collection | DOAJ |
| description | Runoff generation under various natural conditions has often been studied in forested watersheds for a long time. In 1967, Hewlett designed a variable source area model. The model is based on the expansion and shrinkage of variable source areas and consequent changes in a drainage network during a discharge event. The runoff investigation was carried out in a forested watershed situated in the summit area of the Orlické hory Mts. The watershed has a drainage area of 32.6 ha with the land-surface elevation ranging from 880 to 940 m a.s.l. Runoff components, their amounts and ratios were calculated using a simple graphical-mathematical method of the hydrograph recession limb analysis according to a reservoir model representing the particular components (base flow, subsurface flow and overland flow, in other words slow, accelerated and rapid flows). Comparing the amount of slow and rapid runoff constituents (89.5-99.4% and 0.6-10.5%, respectively), the greater amount of slowly moving water confirmed that overland flow was absent under conditions of forest environment. Not even the drainage treatment altered this positive ratio of the runoff constituents. During the third period, under stabilized hydrology and stand conditions, the accelerated and rapid runoff increased again, however maximally by 10% and 4%, respectively, not reaching the initial size of the calibration period. |
| first_indexed | 2024-04-10T08:20:37Z |
| format | Article |
| id | doaj.art-7c48f270563648a182711ce6e8cc97c4 |
| institution | Directory Open Access Journal |
| issn | 1212-4834 1805-935X |
| language | English |
| last_indexed | 2024-04-10T08:20:37Z |
| publishDate | 2010-07-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Journal of Forest Science |
| spelling | doaj.art-7c48f270563648a182711ce6e8cc97c42023-02-23T03:42:09ZengCzech Academy of Agricultural SciencesJournal of Forest Science1212-48341805-935X2010-07-0156730731310.17221/103/2009-JFSjfs-201007-0002Effects of drainage treatment and stand growth on changes in runoff components from a forested watershedV. Černohous0F. Šach1D. Kacálek2Forestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech RepublicForestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech RepublicForestry and Game Management Research Institute, Opočno Research Station, Opočno, Czech RepublicRunoff generation under various natural conditions has often been studied in forested watersheds for a long time. In 1967, Hewlett designed a variable source area model. The model is based on the expansion and shrinkage of variable source areas and consequent changes in a drainage network during a discharge event. The runoff investigation was carried out in a forested watershed situated in the summit area of the Orlické hory Mts. The watershed has a drainage area of 32.6 ha with the land-surface elevation ranging from 880 to 940 m a.s.l. Runoff components, their amounts and ratios were calculated using a simple graphical-mathematical method of the hydrograph recession limb analysis according to a reservoir model representing the particular components (base flow, subsurface flow and overland flow, in other words slow, accelerated and rapid flows). Comparing the amount of slow and rapid runoff constituents (89.5-99.4% and 0.6-10.5%, respectively), the greater amount of slowly moving water confirmed that overland flow was absent under conditions of forest environment. Not even the drainage treatment altered this positive ratio of the runoff constituents. During the third period, under stabilized hydrology and stand conditions, the accelerated and rapid runoff increased again, however maximally by 10% and 4%, respectively, not reaching the initial size of the calibration period.https://jfs.agriculturejournals.cz/artkey/jfs-201007-0002_effects-of-drainage-treatment-and-stand-growth-on-changes-in-runoff-components-from-a-forested-watershed.phpdrainage treatmentforested watershedrecession limbrunoff componentsstormflow hydrograph |
| spellingShingle | V. Černohous F. Šach D. Kacálek Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed Journal of Forest Science drainage treatment forested watershed recession limb runoff components stormflow hydrograph |
| title | Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed |
| title_full | Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed |
| title_fullStr | Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed |
| title_full_unstemmed | Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed |
| title_short | Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed |
| title_sort | effects of drainage treatment and stand growth on changes in runoff components from a forested watershed |
| topic | drainage treatment forested watershed recession limb runoff components stormflow hydrograph |
| url | https://jfs.agriculturejournals.cz/artkey/jfs-201007-0002_effects-of-drainage-treatment-and-stand-growth-on-changes-in-runoff-components-from-a-forested-watershed.php |
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