کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4379364 | 1617570 | 2006 | 7 صفحه PDF | دانلود رایگان |
This paper presents simulations of the soil–plant–atmosphere model DAISY based on an organic crop rotation with incorporation of different catch crops following pea as a leguminous cash crop. Special emphasis was placed on the simulation of nitrogen (N)-mineralisation/immobilisation and of soil microbial biomass N. The DAISY model was able to simulate soil mineral N and soil microbial biomass N after soil incorporation of catch crop plant residues to some extent only. Several processes need further attention and should be integrated into the DAISY model: (1) soil tillage induced mobilisation of organic material including considerable amounts of organic N; (2) winter killing of sensitive plant species and varieties; (3) decomposition of plant residues at the soil surface; (4) decomposition of easily decomposable plant residues at low temperatures, both with respect to the temperature modifier function and to the linkage of C and N turnover; (5) furthermore, reliable criteria for the subdivision of green plant residues into an easily decomposable pool and a more recalcitrant pool have to be developed.
Journal: Ecological Modelling - Volume 191, Issues 3–4, 5 February 2006, Pages 538–544