From: Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest
Pn
Rubisco
chlorophyll
Stomatal conductance
Needle δ13C
0.603*
Chlorophyll
0.637*
0.304
0.526
0.23
0.714**
0.624*
− 0.06
0.818**
0.039
Needle TC
− 0.222
0.268
− 0.228
− 0.191
0.422