Ågren, Göran
- Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
Sammanfattning
We used a simple model of carbon-nitrogen (C-N) interactions in terrestrial ecosystems to examine the responses to elevated CO2 and to elevated CO2 Plus warming in ecosystems that had the same total nitrogen loss but that differed in the ratio of dissolved organic nitrogen (DON) to dissolved inorganic nitrogen (DIN) loss. We postulate that DIN losses can be curtailed by higher N demand in response to elevated CO2, but that DON losses cannot. We also examined simulations in which DON losses were held constant, were proportional to the amount of soil organic matter, were proportional to the soil C:N ratio, or were proportional to the rate of decomposition. We found that the mode of N loss made little difference to the short-term (
Nyckelord
carbon-nitrogen interactions; carbon sequestration; dissolved inorganic nitrogen; dissolved organic nitrogen; ecosystem models; global climate change; soil C : N; terrestrial ecosystems
Publicerad i
Ecological Applications
2005, volym: 15, nummer: 1, sidor: 71-86
Utgivare: ECOLOGICAL SOC AMER
SLU författare
UKÄ forskningsämne
Miljö- och naturvårdsvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1890/03-5303
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/7820