'Root production' presentation slideshows

Richard J. Norby, Sara S. Jawdy, Joanne Ledford, Johnna D. Sholtis, and Dale W. Johnson

Increased nitrogen uptake supports higher NPP but not carbon storage in CO 2 -enriched sweetgum trees. Richard J. Norby, Sara S. Jawdy, Joanne Ledford, Johnna D. Sholtis, and Dale W. Johnson. Environmental Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee.

481 views • 48 slides

Robert Thieler

309 views • 13 slides

Nitrogen-use efficiency of a sweetgum forest in elevated CO 2 Richard J. Norby 1 and Colleen M. Iversen 2

Figure 1: N mass in canopy and litter. canopy. litter. Figure 2: N mass in fine roots. Figure 3: N uptake. A E A E A E A E A E A E. Figure 4: N use efficiency. NUE (Mg/kg): 0.250 0. 215 0.180.

170 views • 1 slides

Info: belelli@unitus.it

Method. AG NPP [t ha -1 ]. BG NPP [t ha -1 ]. total NPP [t ha -1 ]. Method. Description. Calculation. Reference. 2002. 2003. 2002. 2003. 2002. 2003. 1. 0,85. 1,32. 5,22. 8,11. 6,07. 9,43. Max (AG,) live biomass BG NPP is estimated by root/shoot ratio. 1. Peak live Biomass.

110 views • 1 slides