Stream Temperature Response to 50% Strip-Thinning in a Temperate Forested Headwater Catchment
| Autor: | Takashi Gomi, Marino Hiraoka, R. D. Moore, Chen-Wei Chiu, Bui Dung, Yuichi Onda, Dinh Quynh Oanh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
forest harvesting
lcsh:Hydraulic engineering 010504 meteorology & atmospheric sciences Geography Planning and Development Forest management 0207 environmental engineering Drainage basin strip-thinning 02 engineering and technology Aquatic Science 01 natural sciences Biochemistry paired-catchment analysis lcsh:Water supply for domestic and industrial purposes headwater stream lcsh:TC1-978 Temperate climate Ecosystem Hydrometeorology Precipitation Cypress 020701 environmental engineering 0105 earth and related environmental sciences Water Science and Technology Riparian zone Hydrology geography lcsh:TD201-500 geography.geographical_feature_category Thinning stream temperature Environmental science Stream temperature |
| Zdroj: | Water, Vol 13, Iss 1022, p 1022 (2021) Water Volume 13 Issue 8 |
| ISSN: | 2073-4441 |
| Popis: | Stream temperature is a critical parameter for understanding hydrological and biological processes in stream ecosystems. Although a large body of research has addressed the effects of forest harvesting on stream temperature, less is known about the responses of stream temperature to the practice of strip-thinning, which produces more coherent patches of shade and sunlight areas. In this study, we examined stream temperature response to 50% strip-thinning in a 17 ha headwater catchment. The thinning lines extended through the riparian zone. Paired-catchment analysis was applied to estimate changes in daily maximum, mean, and minimum stream temperatures for the first year following treatment. Significant effects on daily maximum stream temperature were found for April to August, ranging from 0.6 °C to 3.9 °C, similar to the magnitude of effect found in previous studies involving 50% random thinning. We conducted further analysis to identify the thermal response variability in relation to hydrometeorological drivers. Multiple regression analysis revealed that treatment effects for maximum daily stream temperature were positively related to solar radiation and negatively related to discharge. Frequent precipitation during the summer monsoon season produced moderate increases in discharge (from 1 to 5 mm day−1), mitigating stream temperature increases associated with solar radiation. Catchment hydrologic response to rain events can play an important role in controlling stream thermal response to forest management practices. |
| Databáze: | OpenAIRE |
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