Effects of P limitation on nutrient cycling intemperate forests

点击翻译按钮获取中文摘要

We examined nutrient limitation in 26 stands of larch forest onvolcanic parent material deposited 300-20,000 y BP at Mt. Shirahata, Sapporo, Japan.Root-ingrowth bioassay showed that of the 26 stands examined 13were N limited,3were Plimited, and 10 were N and P colimited. Nitrogen limitation was common in stands with afoliar N:P ratio<16. In stands with foliar N:P ratio>16, colimitation by N and P dominated,but P limitation was observed at three stands.