Conceptual mini-catchment typologies for testing dominant controls of nutrient dynamics in three Nordic countries
| Autor: | Brian Kronvang, Ina Pohle, Ahti Lepistö, Bjørn Kløve, Fatemeh Hashemi, Martyn N. Futter, Katarina Kyllmar, Johannes Wilhelmus Maria Pullens, Hannu Marttila, Henrik Tornbjerg |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
kasvinravinteet
hallinta lcsh:Hydraulic engineering 010504 meteorology & atmospheric sciences Denmark Geography Planning and Development Drainage basin monitorointi Oceanography Hydrology Water Resources 02 engineering and technology management (control) ravinteet saasteet water quality 01 natural sciences Biochemistry nutrients (plants) lcsh:Water supply for domestic and industrial purposes Nutrient veden laatu pollution pitoisuus-purkautumisen suhde phosphorus export behaviour 020701 environmental engineering fosfori Finland Water Science and Technology media_common PCA geography.geographical_feature_category typologies nitraatit Soil type 6. Clean water typologiat Export behaviour Nordic countries Water quality saastuminen joet Pollution concentration–discharge relationship media_common.quotation_subject 0207 environmental engineering STREAMS Aquatic Science Hydrology (agriculture) viennin käyttäytyminen lcsh:TC1-978 0105 earth and related environmental sciences Sweden Hydrology lcsh:TD201-500 geography nitrates Hysteresis rivers monitoring hysteresis 13. Climate action Nutrient pollution epätarkkuus Environmental science Concentration-discharge relationship |
| Zdroj: | Hashemi, F, Pohle, I, Pullens, J W M, Tornbjerg, H, Kyllmar, K, Marttila, H, Lepistö, A, Kløve, B, Futter, M N & Kronvang, B 2020, ' Conceptual mini-catchment typologies for testing dominant controls of nutrient dynamics in three Nordic countries ', Water, vol. 12, no. 6, 1776 . https://doi.org/10.3390/w12061776 Water, Vol 12, Iss 1776, p 1776 (2020) Water Volume 12 Issue 6 |
| DOI: | 10.3390/w12061776 |
| Popis: | Optimal nutrient pollution monitoring and management in catchments requires an in-depth understanding of spatial and temporal factors controlling nutrient dynamics. Such an understanding can potentially be obtained by analysing stream concentration&ndash discharge (C-Q) relationships for hysteresis behaviours and export regimes. Here, a classification scheme including nine different C-Q types was applied to a total of 87 Nordic streams draining mini-catchments (0.1&ndash 65 km2). The classification applied is based on a combination of stream export behaviour (dilution, constant, enrichment) and hysteresis rotational pattern (clock-wise, no rotation, anti-clockwise). The scheme has been applied to an 8-year data series (2010&ndash 2017) from small streams in Denmark, Sweden, and Finland on daily discharge and discrete nutrient concentrations, including nitrate (NO3&minus ), total organic N (TON), dissolved reactive phosphorus (DRP), and particulate phosphorus (PP). The dominant nutrient export regimes were enrichment for NO3&minus and constant for TON, DRP, and PP. Nutrient hysteresis patterns were primarily clockwise or no hysteresis. Similarities in types of C-Q relationships were investigated using Principal Component Analysis (PCA) considering effects of catchment size, land use, climate, and dominant soil type. The PCA analysis revealed that land use and air temperature were the dominant factors controlling nutrient C-Q types. Therefore, the nutrient export behaviour in streams draining Nordic mini-catchments seems to be dominantly controlled by their land use characteristics and, to a lesser extent, their climate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|