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本文研究了滇西北油麦吊云杉林的净第一性生产力。林龄大，净第一性生产力也大。林龄约５０年和１５０年林分的净第一性生产力分别为５．０３１５ｔ／ｈｍ￣２·ａ和１３．７５６０ｔ／ｈｍ￣２．ａ；油麦吊云杉净第一性生产力占群落净第一性生产力的９２．０３％和６５．３９％；木材的净第一性生产力为１．３４３１和４．１４１７ｔ／ｈｍ￣２·ａ，仅占群落净第一性生产力的２６．６９％和３０．１０％。
In this paper, the net primary productivity of Picea mongolica spruce forest in northwestern Yunnan was studied. Aged, net primary productivity is also large. The net primary productivities of stands of about 50 years and 150 years of stand age were 5.0315 t / hm ~ 2 · a and 13.7560 t / hm ~ 2, respectively. a. The net primary productivity of Picea oblata accounts for 92.03% and 65.39% of the net primary productivity of the plant; the net primary productivity of wood is 1.3431 and 4.1417t / hm ~ 2 · a , Accounting for only 26.69% and 30.10% of the net primary productivity of the community.