Short-term flux chamber experiment to quantify the deposition of gaseous 15N-NH3 to Calluna vulgaris
Jones, M. R.; Raven, J. A.; Leith, I. D.; Cape, J. N.; Smith, R. I.; Fowler, D.. 2008 Short-term flux chamber experiment to quantify the deposition of gaseous 15N-NH3 to Calluna vulgaris. Agricultural and Forest Meteorology, 148 (6-7). 893-901. 10.1016/j.agrformet.2007.12.003Full text not available from this repository.
A flux chamber experiment employing 15N-NH3 was run for a period of 15 days to quantify uptake of NH3 into the component parts of Calluna vulgaris and peat substrate. The results showed that the total N recovered from the vegetation system correlated extremely well with AMANDA deposition measurement, over the whole 15-day period, accounting for all the deposited NH3. The data showed that NH3 was taken up into the above ground biomass over the 15 days of the experiment; 75% was found in green shoots and leaves and 11% in brown shoots. The larger uptake by green shoots and leaves was presumably related to the presence of stomata and the cuticular surface area. Only 1% was captured by the peat due to the closed C. vulgaris canopy. There was little translocation of N from deposited NH3 into the roots and peat. For C. vulgaris it can be calculated that 75% of the above ground deposition was onto the cuticle and only 25% into the stomata.
|Programmes:||CEH Programmes pre-2009 publications > Biogeochemistry > BG01 Measuring and modelling trace gas, aerosol and carbon|
|Additional Keywords:||Ammonia deposition, 15N-ammonia, Calluna vulgaris, Mass balance, Translocation, Cuticular deposition|
|NORA Subject Terms:||Agriculture and Soil Science
Ecology and Environment
|Date made live:||20 Jun 2008 14:04|
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