Fujimori, Takao; Kawanabe, Saburo; Saito, Hideki; Grier, Charles C.; Shidei, Tsunahide. 1976. Biomass and primary production in forests of three major vegetation zones of the northwestern United States. Journal of the Japanese Forestry Society. 58(10): 360-373.
FUJIMORI, Takao, KAWANABE, Saburo, SAITO, Hideki, GRIER, Charles C. &SHIDEI, Tsunahide: Biomass and primary production in forests of three majorvegetation zones of the northwestern United States J. Jap. For. Soc. 58: 360--
373, 1976 Above-ground biomass and net primary production of representative
90 to 130 year-old stands in the Picea sitchensis, Tsuga heterophylla, and Abies
amabilis vegetation zones of the northwestern United States were determined by
destructive analysis and leaf litter collection. Total above-ground biomass, leaf
biomass, and above-ground net production were, respectively 375 t/ha, 7. 9 t/ha,and 10. 3 t/ha/yr for a 100-120 year-old T. heterophylla-P. sitchensis stand in the
P. sitchensis zone; 669 t/ha, 11. 1 t/ha, and 12. 7 t/ha/yr for a 90-.410 year-oldPseudotsuga menziesii-T. heterophylla stand in the T. heterophylla zone; and 832 t/ha, 17. 5 t/ha, and 13. 0 t/ha/yr for a 100—'130 year-old Abies procera-P. menziesii
stand in the Abies amabilis zone. Production structure, production efficiency,volumetric density, and other stand characteristics were presented and compared.Potential biomass accumulation for forests of T. heterophylla and A. amabilis zoneswas assessed by nondestructive stem biomass estimates of mature P. menziesii--7'.
heterophylla and A. procera-P. menziesii stands on sites comparable to those of
corresponding younger stands. Stem biomass of these mature stands was 1591 t/ha and 1637 t/ha respectively.