Strömgren, Monika
- Institutionen för mark och miljö, Sveriges lantbruksuniversitet
Sammanfattning
The fine root biomass and necromass were highest in the fertilized plots, following similar trends in the above-ground biomass, whereas the EcM root tip biomass per basal area decreased by 22 % in the fertilized plots compared to the control. Warming increased the fine root biomass, live/dead-ratio and the number of EcM root tips in the mineral soil and tended to increase the production of EcM mycelia. Greater fine root biomass meant more EcM root tips, although the tip frequency was not affected by fertilization or warming. Significantly higher specific root length of EcM root tips indicated an increased need for nutrients in warmed and in unfertilized plots. Better nutrient supply and warmer soil temperature provide a potential to increase the flow of carbon into the soil via increased fine root biomass, but the carbon balance also depends on root turnover.
Nyckelord
Long-term soil warming; Long-term fertilization; Fine roots; Root morphology; Ectomycorrhiza (EcM); Mycelia
Publicerad i
Plant and Soil
2013, volym: 366, nummer: 1-2, sidor: 287-303
Utgivare: Springer Verlag (Germany)
SLU författare
Berggren Kleja, Dan
- Institutionen för mark och miljö, Sveriges lantbruksuniversitet
- Institutionen för mark och miljö, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Miljövetenskap
Ekologi
Publikationens identifierare
- DOI: https://doi.org/10.1007/s11104-012-1431-0
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/43419