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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kohlpaintner, Michael Huber, Christian Matejek, Boris Göttlein, Axel |
| Copyright Year | 2012 |
| Abstract | In N-saturated forests nitrate concentrations in seepage water ( $$ {\text{N}}{{\text{O}}_3}{^{ - }_{\text{seepage}}} $$ ) regularly show high spatial variability even within homogeneous stands. Up to now the reasons of this variability are not fully understood.The main objective was to identify the crucial parameters that control spatial variability of $$ {\text{N}}{{\text{O}}_3}{^{ - }_{\text{seepage}}} $$ at the Höglwald site.We investigated a multitude of parameters (e.g. N turnover, root biomass, soil chemistry, soil physics, stand parameters) and related them to $$ {\text{N}}{{\text{O}}_3}{^{ - }_{\text{seepage}}} $$ , measured in 40 cm depth with suction cups.A small number of biological parameters (net N mineralization, root distribution, and stand density) explained up to 93 % of the variability of $$ {\text{N}}{{\text{O}}_3}{^{ - }_{\text{seepage}}} $$ in linear regression models. Net N-mineralization rates in the humus layer and fine root biomass in the upper mineral soil influenced $$ {\text{N}}{{\text{O}}_3}{^{ - }_{\text{seepage}}} $$ positively. Fine root biomass in deeper soil layers (30–40 cm depth) and stand density had a negative influence.The rate of net N mineralization in the organic layer is decisive for the nitrate production in the soil. Roots in the upper mineral soil increase $$ {\text{N}}{{\text{O}}_3}{^{ - }_{\text{seepage}}} $$ by intensive water uptake but excluding nitrate at the same time. The variation of these two parameters is responsible for most of the small-scale variability of $$ {\text{N}}{{\text{O}}_3}{^{ - }_{\text{seepage}}} $$ . |
| Starting Page | 895 |
| Ending Page | 905 |
| Page Count | 11 |
| File Format | |
| ISSN | 12864560 |
| Journal | Annals of Forest Science |
| Volume Number | 69 |
| Issue Number | 8 |
| e-ISSN | 1297966X |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2012-06-26 |
| Publisher Institution | Institut National de la Recherche Agronomique (INRA) |
| Publisher Place | Paris |
| Access Restriction | Subscribed |
| Subject Keyword | Nitrate leaching Spatial variability N turnover Net N mineralization Höglwald N saturation Fine root biomass Forestry Tree Biology Wood Science & Technology Environment Forestry Management |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Forestry |
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