Long-Term Nitrogen and Phosphorus Dynamics in Waters Discharging from Forestry-Drained and Undrained Boreal Peatlands
| Autor: | Tapani Sallantaus, Mika Nieminen, Eliza Maher Hasselquist, Sakari Sarkkola |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Peat
010504 meteorology & atmospheric sciences huuhtoutuminen trenching concentration (chemical properties) Oceanography Hydrology Water Resources 010501 environmental sciences ravinteet 01 natural sciences water quality nitrogen temporal trends nutrients (plants) typpi catchment areas suot Drainage Leaching (agriculture) phosphorus turvemaat fosfori Finland Water Science and Technology Ecological Modeling forestry Environmental Sciences (social aspects to be 507) Pollution Nitrogen Tree stand pitoisuus valuma-alueet drainage trends Environmental Engineering vesiensuojelu chemistry.chemical_element metsätalous Environmental Chemistry peatlands 0105 earth and related environmental sciences Hydrology Sweden Phosphorus ojitus 15. Life on land vedenlaatu kuivaus trendit leaching Boreal chemistry 13. Climate action water protection Environmental science Water quality |
| Popis: | Contradictory results for the long-term evolution of nitrogen and phosphorus concentrations in waters discharging from drained peatland forests need reconciliation. We gathered long-term (10–29 years) water quality data from 29 forested catchments, 18 forestry-drained and 11 undrained peatlands. Trend analysis of the nitrogen and phosphorus concentration data indicated variable trends from clearly decreasing to considerably increasing temporal trends. While the variations in phosphorus concentration trends over time did not correlate with any of our explanatory factors, trends in nitrogen concentrations correlated positively with tree stand volume in the catchments and temperature sum. A positive correlation of increasing nitrogen concentrations with temperature sum raises concerns of the future evolution of nitrogen dynamics under a warming climate. Furthermore, the correlation with tree stand volume is troublesome due to the generally accepted policy to tackle the climate crisis by enhancing tree growth. However, future research is still needed to assess which are the actual processes related to stand volume and temperature sum that contribute to increasing TN concentrations. |
| Databáze: | OpenAIRE |
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