| | 362 | Describes r6904. The calculation of root nitrogen uptake in nitrogen_dynamice has two parts. First, the maximum amount of root nitrogen uptake is calculated based on soil chemical properties and long-term root carbon mass. And then, nitrogen uptake is adjusted by the feedback from nitrogen reserve; if the long-term ratio of actual to potential nitrogen reserve pool is over one, then root nitrogen uptake decreases. The uptake does not decrease further than '''p_n_uptake'' of maximum root nitrogen uptake. The adjustment was added due to carbon limitation and too much nitrogen in the plant which was caused by using the reserve nitrogen as possible (See '''Nitrogen reserve pools'''), and it is controlled by the flag '''use_reserve_n''' to y. |
